How many watts of energy does the earth receive from all stars,besides the sun?

Question

Has anyone ever calculated this?

Answer 1

I integrated the apparent magnitudes of the 90 brightest stars, which range from -1.47 for Sirius to +2.5, with the total apparent magnitude being -3.58.

The formula being used is this one:

TMAG = 4.75 - 2.5 log { SUM[i=1,n] 10^[ (4.75 - MAGi) / 2.5 ] }

where...
TMAG = the integrated apparent magnitude
MAGi = the apparent magnitude of the ith star

Then I added 180 stars of magnitude +3.0, which brightened the total to -3.96.

Then I added 540 stars of magnitude +4.0, getting -4.29.
Then I added 1620 stars of magnitude +5.0, getting -4.58.
Then I added 4860 stars of magnitude +6.0, getting -4.86.
Then I added 14580 stars of magnitude +7.0, getting -5.11
Then I added 43740 stars of magnitude +8.0, getting -5.35.
Then I added 93600 stars of magnitude +9.0, getting -5.53.

At this point, I'm going to say "Heck with careful estimation, I'm going to guess" that the integrated magnitude of all the stars in the sky is -6.5.

Let us replace all the stars in the sky by a single imaginary star at a distance of 10 parsecs, having an absolute magnitude of -6.5. Such a star would have a luminosity, L, found from

L = (3.826E+26 W) 10^{ (4.75 + 6.5) / 2.5 }
L = 1.210E+31 watts

The flux of that power at a distance of 10 parsecs would be

flux = L / [ 4 pi (10 parsecs)^2 ]
flux = 1.012E-5 W/m^2

Note that this flux from all the stars is only about 3/8 as much as the flux from the cosmic background radiation (2.7E-5 W/m^2).

Earth's cross section, A, is

A = pi (6.378E+6 m)^2
A = 1.278E+14 m^2

So the power that Earth intercepts from all the stars, other than the sun, is hereby estimated to be...

P = A flux = 1.3 gigawatts

Edit: I found a reference (see sources) that said that the integrated magnitude of all the stars, other than the sun, is -6.7. My guess was very close! The slightly increased brightness brings about these revisions:

L = 1.455E+31 watts
flux = 1.217E-5 W/m^2
P = 1.55 gigawatts

Answer 2

I've never heard of it being done, but you can estimate the thermal flux from the entire universe fairly easily.

The Stefan-Bolzman law goes that P = sigma * A * T^4.
now sigma = 5.67*10^(-8) [SI]. Lets assume that A = 1 m^2 and the temperature of the universe is 2.7 Kelvin, then

P = 27 microwatts per square meter. For comparison, the sun delivers about 1100 watts per square meter - that's 400 million times more.

hth

Answer 3

I am certain that someone has calculated this. It is from such estimates that astronomers have concluded that there must be some unseen matter (a.k.a. dark matter) to explain the total gravity of galaxies.

However, I have not found the actual calculation or result (at least, not yet)

---

The flux of solar energy from the Sun, at Earth's position, is 1370 W/m^2.
Multiply that by the cross-section (area of a disc of Earth's radius) to find out the total number of Watts intercepted by Earth.

1370 W/m^2 corresponds to a magnitude of -26.78

The magnitude scale is geometric, with each magnitude step corresponding to a factor of exactly the fifth root of 100 (approx. 2.5119).

Thus, the flux we get from a star of magnitude 0 (e.g., Vega) is 1370 W/m^2 divided by [the (fifth root of 100) raised to the power 26.78].

The flux from Vega is approximately 2.66x10^-8 W/m^2 (or, if you wish to use square kilometres, 0.0266 W/km^2).

With a cross-section of 127.52 million square kilometres, the Earth intercepts almost 3.4 million Watts from Vega. If we assume the albedo to be the same at this feeble level, then 37% is reflected back to space and only 63% is retained (a little over 2 million W, or one third of one milli-Watt per person.

The flux from a star of magnitude 5 would be 100 times less, at 0.000266 W/m^2, or 20,000 W retained for the entie planet (after albedo reflection).

I will let you find out how many stars of each magnitude, the flux for each, and the sum for all of them.

There is a list of the 300 brightest stars (apparent magnitudes, as seen from Earth) listed at
http://www.atlasoftheuniverse.com/stars.html
It goes to magnitude 3.54
After that, I suggest that you 'bin' the stars in steps:
4 for 3.55 to 4.5
5 for 4.51 to 5.5
etc.
and use an approximate number of stars within each group.


-----

27 microWatts would be from the CMB radiation, not from the sum of all the stars that are close enough to us to "bathe" us in their energy.

Answer 4

I guess no one will calculate this...we dont even know how many stars are there in the sky...billions? trillions? who knows? these are just figures on the books...

Answer 5

1 2 3 4 5 6 7 8 9 10 11 12 13
No. Star Names Equatorial Galactic Spectral Vis Abs Prllx Err Dist
Coordinates Coordinates Type Mag Mag ly
RA Dec l° b°
1. Alpha Canis Majoris Sirius 06 45 -16.7 227.2 -8.9 A1V -1.46 1.43 379.21 1.58 9
2. Alpha Carinae Canopus 06 24 -52.7 261.2 -25.3 F0Ib -0.73 -5.64 10.43 0.53 310
3. Alpha Centauri Rigil Kentaurus 14 40 -60.8 315.8 -0.7 G2V+K1V -0.29 4.06 742.12 1.40 4
4. Alpha Boötis Arcturus 14 16 +19.2 15.2 +69.0 K2III -0.05 -0.31 88.85 0.74 37
5. Alpha Lyrae Vega 18 37 +38.8 67.5 +19.2 A0V 0.03 0.58 128.93 0.55 25
6. Alpha Aurigae Capella 05 17 +46.0 162.6 +4.6 G5III+G0III 0.07 -0.49 77.29 0.89 42
7. Beta Orionis Rigel 05 15 -8.2 209.3 -25.1 B8Ia 0.15v -6.72v 4.22 0.81 770
8. Alpha Canis Minoris Procyon 07 39 +5.2 213.7 +13.0 F5IV-V 0.36 2.64 285.93 0.88 11
9. Alpha Eridani Achernar 01 38 -57.2 290.7 -58.8 B3V 0.45 -2.77 22.68 0.57 144
10. Alpha Orionis Betelgeuse 05 55 +7.4 199.8 -9.0 M2Ib 0.55v -5.04v 7.63 1.64 430
11. Beta Centauri Hadar 14 04 -60.4 311.8 +1.2 B1III 0.61 -5.42 6.21 0.56 530
12. Alpha Aquilae Altair 19 51 +8.9 47.8 -9.0 A7V 0.77 2.21 194.44 0.94 17
13. Alpha Crucis Acrux 12 27 -63.1 300.2 -0.4 B0.5IV+B1V 0.79 -4.17 10.17 0.67 320
14. Alpha Tauri Aldebaran 04 36 +16.5 181.0 -20.2 K5III 0.86v -0.64v 50.09 0.95 65
15. Alpha Scorpii Antares 16 29 -26.4 351.9 +15.1 M1Ib+B4V 0.95v -5.39v 5.40 1.68 600
16. Alpha Virginis Spica 13 25 -11.2 316.1 +50.8 B1V+B2V 0.97 -3.56 12.44 0.86 260
17. Beta Geminorum Pollux 07 45 +28.0 192.2 +23.3 K0III 1.14 1.07 96.74 0.87 34
18. Alpha Piscis Austrini Fomalhaut 22 58 -29.6 20.6 -65.0 A3V 1.15 1.72 130.08 0.92 25
19. Alpha Cygni Deneb 20 41 +45.3 84.3 +2.1 A2Ia 1.24 -8.74 1.01 0.57 3000
20. Beta Crucis Mimosa 12 48 -59.7 302.5 +3.2 B0.5III 1.26 -3.91 9.25 0.61 350
21. Alpha Leonis Regulus 10 08 +12.0 226.3 +48.9 B7V 1.36 -0.52 42.09 0.79 78
22. Epsilon Canis Majoris Adhara 06 59 -29.0 239.9 -11.3 B2II 1.50 -4.10 7.57 0.57 430
23. Alpha Geminorum Castor 07 35 +31.9 187.5 +22.6 A1V+A2V 1.58 0.59 63.27 1.23 52
24. Lambda Scorpii Shaula 17 34 -37.1 351.8 -2.3 B2IV 1.62 -5.05 4.64 0.90 700
25. Gamma Crucis Gacrux 12 31 -57.1 300.2 +5.7 M3.5III 1.63 -0.52 37.09 0.67 88
26. Gamma Orionis Bellatrix 05 25 +6.3 197.0 -16.0 B2III 1.64 -2.72 13.42 0.98 240
27. Beta Tauri Elnath 05 26 +28.6 178.0 -3.8 B7III 1.66 -1.36 24.89 0.88 130
28. Beta Carinae Miaplacidus 09 13 -69.7 286.0 -14.4 A2III 1.67 -0.99 29.34 0.47 111
29. Epsilon Orionis Alnilam 05 36 -1.2 205.2 -17.3 B0Ia 1.69 -6.38 2.43 0.91 1300
30. Alpha Gruis Alnair 22 08 -47.0 350.0 -52.4 B7IV 1.74 -0.72 32.16 0.82 101
31. Zeta Orionis Alnitak 05 41 -1.9 206.5 -16.5 O9.5Ib+B0III 1.75 -5.25 3.99 0.79 820
32. Epsilon Ursae Majoris Alioth 12 54 +56.0 122.2 +61.1 A0IV 1.77 -0.20 40.30 0.62 81
33. Alpha Persei Mirfak 03 24 +49.9 146.5 -5.9 F5Ib 1.80 -4.49 5.51 0.66 590
34. Alpha Ursae Majoris Dubhe 11 04 +61.8 142.8 +51.0 K0III+F0V 1.80 -1.09 26.38 0.53 124
35. Gamma Velorum Regor 08 10 -47.3 262.8 -7.6 WC8+O9Ib 1.81 -5.25 3.88 0.53 840
36. Delta Canis Majoris Wezen 07 08 -26.4 238.4 -8.3 F8Ia 1.83 -6.87 1.82 0.56 1800
37. Epsilon Sagittarii Kaus Australis 18 24 -34.4 359.2 -9.8 B9.5III 1.84 -1.39 22.55 1.02 145
38. Eta Ursae Majoris Alkaid 13 48 +49.3 100.5 +65.3 B3V 1.86 -0.59 32.39 0.74 101
39. Theta Scorpii Sargas 17 37 -43.0 347.1 -5.9 F1II 1.86 -2.75 11.99 0.84 270
40. Epsilon Carinae Avior 08 23 -59.5 274.3 -12.5 K3II+B2V 1.87 -4.57 5.16 0.49 630
41. Beta Aurigae Menkalinan 06 00 +44.9 167.5 +10.5 A2IV 1.90 -0.10 39.72 0.78 82
42. Alpha Trianguli Australis Atria 16 49 -69.0 321.6 -15.3 K2Ib-II 1.92 -3.61 7.85 0.63 420
43. Gamma Geminorum Alhena 06 38 +16.4 196.8 +4.5 A0IV 1.93 -0.60 31.12 2.33 105
44. Alpha Pavonis Peacock 20 26 -56.7 340.9 -35.3 B0.5V+B2V 1.93 -1.82 17.80 0.70 180
45. Delta Velorum Koo She 08 45 -54.7 272.1 -7.3 A0V 1.95 0.01 40.90 0.38 80
46. Beta Canis Majoris Mirzam 06 23 -18.0 226.1 -14.2 B1III 1.98 -3.95 6.53 0.66 500
47. Alpha Hydrae Alphard 09 28 -8.7 241.6 +29.1 K3II 1.98 -1.70 18.40 0.78 180
48. Alpha Ursae Minoris Polaris 02 32 +89.3 123.3 +26.5 F7Ib-II 1.99v -3.62v 7.56 0.48 430
49. Gamma Leonis Algieba 10 20 +19.8 216.6 +54.7 K0III+G7III 2.00 -0.93 25.96 0.83 126
50. Alpha Arietis Hamal 02 07 +23.5 144.5 -36.2 K2III 2.01 0.48 49.48 0.99 66
51. Beta Ceti Diphda 00 44 -18.0 112.0 -80.7 K0III 2.04 -0.30 34.04 0.82 96
52. Sigma Sagittarii Nunki 18 55 -26.3 9.5 -12.4 B3V 2.05 -2.14 14.54 0.88 220
53. Theta Centauri Menkent 14 07 -36.4 319.5 +24.0 K0III 2.06 0.70 53.52 0.79 61
54. Alpha Andromedae Alpheratz 00 08 +29.1 111.6 -32.8 B9IV 2.07 -0.30 33.60 0.73 97
55. Beta Andromedae Mirach 01 10 +35.6 127.2 -27.1 M0II 2.07 -1.86 16.36 0.76 200
56. Kappa Orionis Saiph 05 48 -9.7 214.6 -18.4 B0.5III 2.07 -4.65 4.52 0.77 720
57. Beta Ursae Minoris Kochab 14 51 +74.2 112.7 +40.5 K4III 2.07 -0.87 25.79 0.52 127
58. Beta Gruis Al Dhanab 22 43 -46.9 346.2 -58.0 M5III 2.07v -1.52v 19.17 0.75 170
59. Alpha Ophiuchi Rasalhague 17 35 +12.6 35.9 +22.6 A5III-IV 2.08 1.30 69.84 0.88 47
60. Beta Persei Algol 03 08 +41.0 148.9 -14.9 B8V+G5IV+A 2.09e -0.18 35.14 0.90 93
61. Gamma Andromedae Almach 02 04 +42.3 137.0 -18.6 K3II+B8V+A0V 2.10 -3.08 9.19 0.73 360
62. Beta Leonis Denebola 11 49 +14.6 250.6 +70.8 A3V 2.14 1.92 90.16 0.89 36
63. Gamma Cassiopeiae Cih 00 57 +60.7 123.6 -2.2 B0IV 2.15v -4.22v 5.32 0.56 610
64. Gamma Centauri Muhlifain 12 42 -49.0 301.3 +13.8 A0III+A0III 2.20 -0.81 25.01 1.01 130
65. Zeta Puppis Naos 08 04 -40.0 256.0 -4.6 O5Ia 2.21 -5.95 2.33 0.51 1400
66. Iota Carinae Aspidiske 09 17 -59.3 278.5 -7.0 A8Ib 2.21v -4.42v 4.71 0.46 690
67. Alpha Coronae Borealis Alphecca 15 35 +26.7 41.9 +53.7 A0V+G5V 2.22e 0.42 43.65 0.79 75
68. Lambda Velorum Suhail 09 08 -43.4 265.9 +2.9 K4Ib 2.23 -3.99 5.69 0.53 570
69. Zeta Ursae Majoris Mizar 13 24 +54.9 113.1 +61.6 A2V+A2V+A1V 2.23 0.33 41.73 0.61 78
70. Gamma Cygni Sadr 20 22 +40.3 78.2 +1.9 F8Ib 2.23 -6.12 2.14 0.51 1500
71. Alpha Cassiopeiae Schedar 00 41 +56.5 121.5 -6.3 K0II 2.24 -1.99 14.27 0.57 230
72. Gamma Draconis Eltanin 17 57 +51.5 79.1 +29.1 K5III 2.24 -1.04 22.10 0.46 148
73. Delta Orionis Mintaka 05 32 -0.3 203.9 -17.7 O9.5II+B2V 2.25e -4.99 3.56 0.83 920
74. Beta Cassiopeiae Caph 00 09 +59.2 117.5 -3.2 F2III 2.28 1.17 59.89 0.56 55
75. Epsilon Centauri 13 40 -53.5 310.2 +8.7 B1III 2.29 -3.02 8.68 0.77 380
76. Delta Scorpii Dschubba 16 00 -22.6 350.1 +22.6 B0.5IV 2.29 -3.16 8.12 0.88 400
77. Epsilon Scorpii Wei 16 50 -34.3 348.8 +6.6 K2.5III 2.29 0.78 49.85 0.81 65
78. Alpha Lupi Men 14 42 -47.4 321.6 +11.4 B1.5III 2.30 -3.83 5.95 0.76 550
79. Eta Centauri 14 36 -42.2 322.9 +16.6 B1.5V 2.33v -2.55v 10.57 0.83 310
80. Beta Ursae Majoris Merak 11 02 +56.4 149.1 +54.8 A1V 2.34 0.41 41.07 0.60 79
81. Epsilon Boötis Izar 14 45 +27.1 39.4 +64.8 K0II-III+A2V 2.35 -1.69 15.55 0.78 210
82. Epsilon Pegasi Enif 21 44 +9.9 65.6 -31.4 K2Ib 2.38 -4.19 4.85 0.84 670
83. Kappa Scorpii Girtab 17 42 -39.0 351.0 -4.6 B1.5III 2.39 -3.38 7.03 0.73 460
84. Alpha Phoenicis Ankaa 00 26 -42.3 320.2 -74.0 K0III 2.40 0.52 42.14 0.78 77
85. Gamma Ursae Majoris Phecda 11 54 +53.7 140.8 +61.4 A0V 2.41 0.36 38.99 0.68 84
86. Eta Ophiuchi Sabik 17 10 -15.7 6.7 +14.1 A1V+A3V 2.43 0.37 38.77 0.86 84
87. Beta Pegasi Scheat 23 04 +28.1 95.8 -29.1 M2III 2.44v -1.49v 16.37 0.72 200
88. Eta Canis Majoris Aludra 07 24 -29.3 242.6 -6.5 B5Ia 2.45 -7.51 1.02 0.57 3000
89. Alpha Cephei Alderamin 21 19 +62.6 101.0 +9.1 A7IV 2.45 1.58 66.84 0.49 49
90. Kappa Velorum Markeb 09 22 -55.0 275.9 -3.5 B2IV 2.47 -3.62 6.05 0.48 540
91. Epsilon Cygni Gienah 20 46 +34.0 76.0 -5.7 K0III 2.48 0.76 45.26 0.53 72
92. Alpha Pegasi Markab 23 05 +15.2 88.4 -40.4 B9IV 2.49 -0.67 23.36 0.76 140
93. Alpha Ceti Menkar 03 02 +4.1 173.3 -45.6 M2III 2.54 -1.61 14.82 0.83 220
94. Zeta Ophiuchi Han 16 37 -10.6 6.2 +23.6 O9.5V 2.54 -3.20 7.12 0.71 460
95. Zeta Centauri Al Nair al Kent. 13 56 -47.3 314.2 +14.2 B2.5IV 2.55 -2.81 8.48 0.74 390
96. Delta Leonis Zosma 11 14 +20.5 224.3 +66.8 A4V 2.56 1.32 56.52 0.83 58
97. Beta Scorpii Graffias 16 05 -19.8 353.1 +23.7 B1V+B2V 2.56 -3.50 6.15 1.12 530
98. Alpha Leporis Arneb 05 33 -17.8 221.0 -25.1 F0Ib 2.58 -5.40 2.54 0.72 1300
99. Delta Centauri 12 08 -50.7 295.9 +11.6 B2IV 2.58v -2.84v 8.25 0.79 400
100. Gamma Corvi Gienah Ghurab 12 16 -17.5 291.1 +44.6 B8III 2.58 -0.94 19.78 0.81 165
101. Zeta Sagittarii Ascella 19 03 -29.9 6.9 -15.5 A2IV+A4V 2.60 0.42 36.61 1.37 89
102. Beta Librae Zubeneschamali 15 17 -9.4 352.0 +39.2 B8V 2.61 -0.84 20.38 0.87 160
103. Alpha Serpentis Unukalhai 15 44 +6.4 14.1 +44.1 K2III 2.63 0.87 44.54 0.71 73
104. Beta Arietis Sheratan 01 55 +20.8 142.4 -39.7 A5V 2.64 1.33 54.74 0.75 60
105. Alpha Librae Zubenelgenubi 14 51 -16.0 340.4 +38.0 A3IV+F4IV 2.64 0.77 42.25 1.05 77
106. Alpha Columbae Phact 05 40 -34.1 238.9 -28.8 B7IV 2.65 -1.93 12.16 0.60 270
107. Theta Aurigae 06 00 +37.2 174.4 +6.8 A0III+G2V 2.65 -0.98 18.83 0.81 170
108. Beta Corvi Kraz 12 34 -23.4 297.8 +39.3 G5III 2.65 -0.51 23.34 0.80 140
109. Delta Cassiopeiae Ruchbah 01 26 +60.2 127.2 -2.4 A5III 2.66 0.24 32.81 0.62 99
110. Eta Boötis Muphrid 13 55 +18.4 5.5 +73.0 G0IV 2.68 2.41 88.17 0.75 37
111. Beta Lupi Ke Kouan 14 59 -43.1 326.4 +13.9 B2III 2.68 -3.35 6.23 0.71 520
112. Iota Aurigae Hassaleh 04 57 +33.2 170.6 -6.1 K3II 2.69 -3.29 6.37 0.96 510
113. Mu Velorum 10 47 -49.4 283.1 +8.6 G5III+G2V 2.69 -0.06 28.18 0.49 116
114. Alpha Muscae 12 37 -69.1 301.6 -6.3 B2V 2.69 -2.17 10.67 0.48 310
115. Upsilon Scorpii Lesath 17 31 -37.3 351.3 -1.9 B2IV 2.70 -3.31 6.29 0.81 520
116. Pi Puppis 07 17 -37.1 249.0 -11.3 K4Ib 2.71 -4.92 2.98 0.55 1100
117. Delta Sagittarii Kaus Meridionalis 18 21 -29.8 3.0 -7.2 K2II 2.72 -2.14 10.67 0.93 310
118. Gamma Aquilae Tarazed 19 46 +10.6 48.7 -7.0 K3II 2.72 -3.03 7.08 0.75 460
119. Delta Ophiuchi Yed Prior 16 14 -3.7 8.8 +32.3 M1III 2.73 -0.86 19.16 1.02 170
120. Eta Draconis Aldhibain 16 24 +61.5 92.6 +40.9 G8III 2.73 0.58 37.18 0.45 88
121. Theta Carinae 10 43 -64.4 289.6 -4.9 B0V 2.74 -2.91 7.43 0.50 440
122. Gamma Virginis Porrima 12 42 -1.5 298.1 +61.3 F0V+F0V 2.74 2.38 84.53 1.18 39
123. Iota Orionis Hatysa 05 35 -5.9 209.5 -19.7 O9III 2.75 -5.30 2.46 0.77 1300
124. Iota Centauri 13 21 -36.7 309.5 +25.8 A2V 2.75 1.48 55.64 0.74 59
125. Beta Ophiuchi Cebalrai 17 43 +4.6 29.2 +17.3 K2III 2.76 0.76 39.78 0.75 82
126. Beta Eridani Kursa 05 08 -5.1 205.4 -25.3 A3III 2.78 0.60 36.71 0.76 89
127. Beta Herculis Kornephoros 16 30 +21.5 39.0 +40.3 G7III 2.78 -0.50 22.07 1.00 150
128. Delta Crucis 12 15 -58.7 298.2 +3.8 B2IV 2.79 -2.45 8.96 0.60 360
129. Beta Draconis Rastaban 17 30 +52.3 79.6 +33.4 G2II 2.79 -2.43 9.02 0.49 360
130. Alpha Canum Venaticorum Cor Caroli 12 56 +38.3 118.3 +78.8 A0IV+F0V 2.80v 0.16v 29.60 1.04 110
131. Gamma Lupi 15 35 -41.2 333.2 +11.9 B2IV-V+B2IV-V 2.80 -3.40 5.75 1.24 570
132. Beta Leporis Nihal 05 28 -20.8 223.6 -27.3 G5III 2.81 -0.63 20.49 0.85 160
133. Zeta Herculis Rutilicus 16 41 +31.6 52.6 +40.3 F9IV+G7V 2.81 2.64 92.63 0.60 35
134. Beta Hydri 00 26 -77.3 304.7 -39.7 G2IV 2.82 3.45 133.78 0.51 24
135. Tau Scorpii 16 36 -28.2 351.6 +12.8 B0V 2.82 -2.78 7.59 0.78 430
136. Lambda Sagittarii Kaus Borealis 18 28 -25.4 7.7 -6.5 K1III 2.82 0.95 42.20 0.90 77
137. Gamma Pegasi Algenib 00 13 +15.2 109.4 -46.7 B2IV 2.83 -2.22 9.79 0.81 330
138. Rho Puppis Turais 08 08 -24.3 243.2 +4.5 F6III 2.83 1.41 51.99 0.66 63
139. Beta Trianguli Australis 15 55 -63.4 321.9 -7.5 F2IV 2.83 2.38 81.24 0.62 40
140. Zeta Persei 03 54 +31.9 162.3 -16.7 B1II+B8IV+A2V 2.84 -4.55 3.32 0.75 980
141. Beta Arae 17 25 -55.5 335.4 -11.0 K3Ib-II 2.84 -3.49 5.41 0.76 600
142. Alpha Arae Choo 17 32 -49.9 340.8 -8.9 B2V 2.84 -1.51 13.46 0.95 240
143. Eta Tauri Alcyone 03 47 +24.1 166.6 -23.5 B7III 2.85 -2.41 8.87 0.99 370
144. Epsilon Virginis Vindemiatrix 13 02 +11.0 312.3 +73.7 G8III 2.85 0.37 31.90 0.87 102
145. Delta Capricorni Deneb Algedi 21 47 -16.1 37.6 -46.0 A5V 2.85e 2.49 84.58 0.88 39
146. Alpha Hydri Head of Hydrus 01 59 -61.6 289.4 -53.7 F0III 2.86 1.16 45.74 0.55 71
147. Delta Cygni 19 45 +45.1 78.7 +10.2 B9.5III+F1V 2.86 -0.74 19.07 0.45 170
148. Mu Geminorum Tejat 06 23 +22.5 189.8 +4.2 M3III 2.87v -1.39v 14.07 0.93 230
149. Gamma Trianguli Australis 15 19 -68.7 316.5 -8.4 A1III 2.87 -0.87 17.85 0.52 180
150. Alpha Tucanae 22 19 -60.3 330.1 -48.0 K3III 2.87 -1.05 16.42 0.59 200
151. Theta Eridani Acamar 02 58 -40.3 247.9 -60.7 A4III+A1V 2.88 -0.59 20.22 0.54 160
152. Pi Sagittarii Albaldah 19 10 -21.0 15.9 -13.3 F2II 2.88 -2.77 7.41 0.69 440
153. Beta Canis Minoris Gomeisa 07 27 +08.3 209.5 +11.7 B8V 2.89 -0.70 19.16 0.85 170
154. Pi Scorpii 15 59 -26.1 347.2 +20.2 B1V+B2V 2.89 -2.85 7.10 0.84 460
155. Epsilon Persei 03 58 +40.0 157.4 -10.1 B0.5V+A2V 2.90 -3.19 6.06 0.82 540
156. Sigma Scorpii Alniyat 16 21 -25.6 351.3 +17.0 B1III 2.90v -3.86v 4.44 0.81 730
157. Beta Cygni Albireo 19 31 +28.0 62.1 +4.6 K3II+B8V+B9V 2.90 -2.31 8.46 0.58 390
158. Beta Aquarii Sadalsuud 21 32 -05.6 48.0 -37.9 G0Ib 2.90 -3.47 5.33 0.94 610
159. Gamma Persei 03 05 +53.5 142.1 -4.3 G8III+A2V 2.91 -1.57 12.72 0.71 260
160. Upsilon Carinae 09 47 -65.1 285.0 -8.8 A7Ib+B7III 2.92 -5.56 2.01 0.40 1600
161. Eta Pegasi Matar 22 43 +30.2 92.5 -25.0 G2II-III+F0V 2.93 -1.16 15.18 0.79 215
162. Tau Puppis 06 50 -50.6 260.2 -20.9 K1III 2.94 -0.80 17.85 0.49 185
163. Delta Corvi Algorel 12 30 -16.5 295.5 +46.0 B9.5V 2.94 0.79 37.11 0.69 88
164. Alpha Aquarii Sadalmelik 22 06 -00.3 59.9 -42.1 G2Ib 2.95 -3.88 4.30 0.83 760
165. Gamma Eridani Zaurak 03 58 -13.5 205.2 -44.5 M1III 2.97 -1.19 14.75 0.75 220
166. Zeta Tauri Alheka 05 38 +21.1 185.7 -5.6 B4III 2.97 -2.56 7.82 1.02 420
167. Epsilon Leonis Ras Elased Austr. 09 46 +23.8 206.8 +48.2 G1II 2.97 -1.46 13.01 0.88 250
168. Gamma² Sagittarii Alnasl 18 06 -30.4 0.9 -4.5 K0III 2.98 0.63 33.94 0.87 96
169. Gamma Hydrae 13 19 -23.2 311.1 +39.3 G8III 2.99 -0.05 24.69 0.70 132
170. Iota¹ Scorpii 17 48 -40.1 350.6 -6.1 F2Ia 2.99 -5.71 1.82 0.73 1800
171. Zeta Aquilae Deneb el Okab 19 05 +13.9 46.9 +3.3 A0V 2.99 0.96 39.18 0.72 83
172. Beta Trianguli 02 10 +35.0 140.6 -25.2 A5III 3.00 0.09 26.24 0.77 124
173. Psi Ursae Majoris 11 10 +44.5 165.8 +63.2 K1III 3.00 -0.27 22.21 0.68 147
174. Gamma Ursae Minoris Pherkad Major 15 21 +71.8 108.5 +40.8 A3II 3.00 -2.84 6.79 0.46 480
175. Mu¹ Scorpii 16 52 -38.0 346.1 +3.9 B1.5V+B6.5V 3.00 -4.01 3.97 1.20 820
176. Gamma Gruis 21 54 -37.4 6.1 -51.5 B8III 3.00 -0.97 16.07 0.77 205
177. Delta Persei 03 43 +47.8 150.3 -5.8 B5III 3.01 -3.04 6.18 0.85 530
178. Zeta Canis Majoris Phurad 06 20 -30.1 237.5 -19.4 B2.5V 3.02 -2.05 9.70 0.58 340
179. Omicron² Canis Majoris 07 03 -23.8 235.6 -8.2 B3Ia 3.02 -6.46 1.27 0.56 2600
180. Epsilon Corvi Minkar 12 10 -22.6 290.6 +39.3 K2II 3.02 -1.82 10.75 0.71 300
181. Epsilon Aurigae Almaaz 05 02 +43.8 162.8 +1.2 F0Ia 3.03e -5.95 1.60 1.16 2000
182. Beta Muscae 12 46 -68.1 302.5 -5.2 B2V+B3V 3.04 -1.86 10.48 0.65 310
183. Gamma Boötis Seginus 14 32 +38.3 67.3 +66.2 A7III 3.04 0.96 38.29 0.73 85
184. Beta Capricorni Dabih 20 21 -14.8 29.2 -26.4 G5II+A0V 3.05 -2.07 9.48 0.95 340
185. Epsilon Geminorum Mebsuta 06 44 +25.1 189.5 +9.6 G8Ib 3.06 -4.15 3.61 0.91 900
186. Mu Ursae Majoris Tania Australis 10 22 +41.5 177.9 +56.4 M0III 3.06e -1.35 13.11 0.75 250
187. Delta Draconis Tais 19 13 +67.7 98.7 +23.0 G9III 3.07 0.63 32.54 0.46 100
188. Eta Sagittarii 18 18 -36.8 356.4 -9.7 M3.5III 3.10 -0.20 21.87 0.92 149
189. Zeta Hydrae 08 55 +05.9 222.3 +30.2 G9III 3.11 -0.21 21.64 0.99 150
190. Nu Hydrae 10 50 -16.2 265.1 +37.6 K2III 3.11 -0.03 23.54 0.81 139
191. Lambda Centauri 11 36 -63.0 294.5 -1.4 B9III 3.11 -2.39 7.96 0.52 410
192. Alpha Indi Persian 20 38 -47.3 352.6 -37.2 K0III 3.11 0.65 32.21 0.75 101
193. Beta Columbae Wazn 05 51 -35.8 241.3 -27.1 K2III 3.12 1.02 37.94 0.57 86
194. Iota Ursae Majoris Talita 08 59 +48.0 171.5 +40.8 A7IV 3.12 2.29 68.32 0.79 48
195. Zeta Arae 16 59 -56.0 332.8 -8.2 K3II 3.12 -3.11 5.68 0.91 570
196. Delta Herculis Sarin 17 15 +24.8 46.8 +31.4 A3IV 3.12 1.21 41.55 0.65 78
197. Kappa Centauri Ke Kwan 14 59 -42.1 326.9 +14.8 B2IV 3.13 -2.96 6.05 0.73 540
198. Alpha Lyncis 09 21 +34.4 190.2 +44.7 K7III 3.14 -1.02 14.69 0.81 220
199. N Velorum 09 31 -57.0 278.2 -4.1 K5III 3.16 -1.15 13.72 0.51 240
200. Pi Herculis 17 15 +36.8 60.7 +34.3 K3II 3.16 -2.10 8.89 0.52 370
201. Nu Puppis 06 38 -43.2 251.9 -20.5 B8III 3.17 -2.39 7.71 0.52 420
202. Theta Ursae Majoris Al Haud 09 33 +51.7 165.5 +45.7 F6IV 3.17 2.52 74.15 0.74 44
203. Zeta Draconis Aldhibah 17 09 +65.7 96.0 +35.0 B6III 3.17 -1.92 9.60 0.47 340
204. Phi Sagittarii 18 46 -27.0 8.0 -10.8 B8III 3.17 -1.08 14.14 0.88 230
205. Eta Aurigae Hoedus II 05 07 +41.2 165.4 +0.3 B3V 3.18 -0.96 14.87 0.74 220
206. Alpha Circini 14 43 -65.0 314.3 -4.6 F0V+K5V 3.18 2.11 60.97 0.58 53
207. Pi³ Orionis Tabit 04 50 +07.0 191.5 -23.1 F6V 3.19 3.67 124.60 0.95 26
208. Epsilon Leporis 05 05 -22.4 223.3 -32.7 K5III 3.19 -1.02 14.39 0.68 225
209. Kappa Ophiuchi 16 58 +09.4 28.4 +29.5 K2III 3.19 1.09 37.99 0.75 86
210. G Scorpii 17 50 -37.0 353.5 -4.9 K2III 3.19 0.24 25.71 0.87 127
211. Zeta Cygni 21 13 +30.2 76.8 -12.5 G8III 3.21 -0.12 21.62 0.63 151
212. Gamma Cephei Errai 23 39 +77.6 119.0 +15.3 K1IV 3.21 2.51 72.50 0.52 45
213. Delta Lupi 15 21 -40.6 331.3 +13.8 B1.5IV 3.22 -2.75 6.39 0.86 510
214. Epsilon Ophiuchi Yed Posterior 16 18 -04.7 8.6 +30.8 G9III 3.23 0.64 30.34 0.79 108
215. Eta Serpentis Alava 18 21 -02.9 26.9 +5.4 K0III-IV 3.23 1.84 52.81 0.75 62
216. Beta Cephei Alphirk 21 29 +70.6 107.5 +14.0 B2III 3.23v -3.08v 5.48 0.47 600
217. Alpha Pictoris 06 48 -61.9 271.9 -24.1 A7III 3.24 0.83 32.96 2.14 99
218. Theta Aquilae 20 11 -00.8 41.6 -18.1 B9.5III 3.24 -1.48 11.36 0.92 285
219. Sigma Puppis 07 29 -43.3 255.7 -11.9 K5III+G5V 3.25 -0.51 17.74 0.47 185
220. Pi Hydrae 14 06 -26.7 323.0 +33.3 K2III 3.25 0.79 32.17 0.77 101
221. Sigma Librae Brachium 15 04 -25.3 337.2 +28.6 M3III 3.25 -1.51 11.17 0.98 290
222. Gamma Lyrae Sulaphat 18 59 +32.7 63.3 +12.8 B9II 3.25 -3.20 5.14 0.51 630
223. Gamma Hydri 03 47 -74.2 289.1 -37.8 M2III 3.26 -0.83 15.23 0.53 215
224. Delta Andromedae 00 39 +30.9 119.9 -31.9 K3III 3.27 0.81 32.19 0.68 101
225. Theta Ophiuchi 17 22 -25.0 0.5 +6.6 B2IV 3.27 -2.92 5.79 0.69 560
226. Delta Aquarii Skat 22 55 -15.8 49.6 -60.7 A3III 3.27 -0.18 20.44 2.26 160
227. Mu Leporis 05 13 -16.2 217.3 -28.9 B9IV 3.29v -0.47v 17.69 0.71 185
228. Omega Carinae 10 14 -70.0 290.2 -11.2 B8III 3.29 -1.99 8.81 0.48 370
229. Iota Draconis Edasich 15 25 +59.0 94.0 +48.6 K2III 3.29 0.81 31.92 0.51 102
230. Alpha Doradus 04 34 -55.0 263.8 -41.4 A0IV+B9IV 3.30 -0.36 18.56 0.46 175
231. p Carinae 10 32 -61.7 287.2 -3.2 B4V 3.30 -2.62 6.56 0.49 500
232. Mu Centauri 13 50 -42.5 314.2 +19.1 B2IV-V 3.30v -2.74v 6.19 0.71 530
233. Eta Geminorum Propus 06 15 +22.5 188.9 +2.5 M3III 3.31v -1.84v 9.34 1.99 350
234. Alpha Herculis Rasalgethi 17 15 +14.4 35.5 +27.8 M5III+G5III 3.31v -2.04v 8.53 2.80 380
235. Gamma Arae 17 25 -56.4 334.6 -11.5 B1III 3.31 -4.40 2.87 0.75 1100
236. Beta Phoenicis 01 06 -46.7 295.5 -70.2 G8III 3.32 -0.55 16.9 9.9 190
237. Rho Persei Gorgonea Tertia 03 05 +38.8 149.6 -17.0 M3III 3.32v -1.67v 10.03 0.83 325
238. Delta Ursae Majoris Megrez 12 15 +57.0 132.6 +59.4 A3V 3.32 1.33 40.05 0.60 81
239. Eta Scorpii 17 12 -43.2 344.4 -2.3 F3III-IV 3.32 1.61 45.56 0.79 72
240. Nu Ophiuchi 17 59 -09.8 18.2 +7.0 K0III 3.32 -0.03 21.35 0.79 155
241. Tau Sagittarii 19 07 -27.7 9.3 -15.4 K1III 3.32 0.48 27.09 1.48 120
242. Alpha Reticuli 04 14 -62.5 274.3 -41.7 G8III 3.33 -0.17 19.98 0.45 165
243. Theta Leonis Chort 11 14 +15.4 235.4 +64.6 A2III 3.33 -0.35 18.36 0.77 180
244. Xi Puppis Asmidiske 07 49 -24.9 241.5 +0.6 G5Ib 3.34 -4.74 2.42 0.74 1300
245. Epsilon Cassiopeiae Segin 01 54 +63.7 129.9 +1.7 B2III 3.35 -2.31 7.38 0.57 440
246. Eta Orionis Algjebbah 05 24 -02.4 204.9 -20.4 B1V+B2V 3.35 -3.86 3.62 0.88 900
247. Xi Geminorum Alzirr 06 45 +12.9 200.7 +4.5 F5IV 3.35 2.13 57.02 0.83 57
248. Omicron Ursae Majoris Muscida 08 30 +60.7 156.0 +35.4 G5III 3.35v -0.40v 17.76 0.65 185
249. Delta Aquilae 19 25 +03.1 39.6 -6.1 F2IV 3.36 2.43 65.05 0.81 50
250. Epsilon Lupi 15 23 -44.7 329.2 +10.3 B2IV-V 3.37 -2.58 6.47 0.61 500
251. Zeta Virginis Heze 13 35 -00.6 325.3 +60.4 A3V 3.38 1.62 44.55 0.90 73
252. Epsilon Hydrae 08 47 +06.4 220.7 +28.5 G5III+A8V+F7V 3.38 0.29 24.13 1.29 135
253. Lambda Orionis Meissa 05 35 +09.9 195.1 -12.0 O8III 3.39 -4.16 3.09 0.78 1100
254. q Carinae 10 17 -61.3 285.5 -3.8 K3II 3.39 -3.38 4.43 0.49 740
255. Delta Virginis Auva 12 56 +03.4 305.5 +66.3 M3III 3.39 -0.57 16.11 0.88 200
256. Zeta Cephei 22 11 +58.2 103.1 +1.7 K1II 3.39 -3.35 4.49 0.50 730
257. Theta² Tauri 04 29 +15.9 180.4 -22.0 A7III 3.40 0.10 21.89 0.83 150
258. Gamma Phoenicis 01 28 -43.3 280.5 -72.2 K5III 3.41 -0.87 13.94 0.64 235
259. Lambda Tauri 04 01 +12.5 178.4 -29.4 B3V+A4IV 3.41e -1.87 8.81 0.99 370
260. Nu Centauri 13 50 -41.7 314.4 +19.9 B2IV 3.41 -2.41 6.87 0.77 475
261. Zeta Lupi 15 12 -52.1 323.8 +5.0 G8III 3.41 0.65 28.06 0.71 116
262. Eta Cephei 20 45 +61.8 097.9 +11.6 K0IV 3.41 2.63 69.73 0.49 47
263. Zeta Pegasi Homam 22 41 +10.8 078.9 -40.7 B8.5V 3.41 -0.62 15.64 0.75 210
264. Alpha Trianguli Mothallah 01 53 +29.6 138.6 -31.4 F6IV 3.42 1.95 50.87 0.82 64
265. Eta Lupi 16 00 -38.4 338.8 +11.0 B2.5IV+A5V 3.42 -2.48 6.61 0.78 495
266. Mu Herculis 17 46 +27.7 052.4 +25.6 G5IV 3.42 3.80 119.05 0.62 27
267. Beta Pavonis 20 45 -66.2 329.0 -36.0 A7III 3.42 0.29 23.71 0.63 140
268. a Carinae 09 11 -58.9 277.7 -7.4 B2IV 3.43 -2.11 7.79 0.47 420
269. Zeta Leonis Adhafera 10 17 +23.4 210.2 +55.0 F0II-III 3.43 -1.08 12.56 0.78 260
270. Lambda Aquilae Althalimain 19 06 -04.9 030.3 -5.5 B9V 3.43 0.51 26.05 0.81 125
271. Lambda Ursae Majoris Tania Borealis 10 17 +42.9 175.9 +55.1 A2IV 3.45 0.38 24.27 0.79 135
272. Beta Lyrae Sheliak 18 50 +33.4 63.2 +14.8 B8II 3.45e -3.71 3.70 0.52 880
273. Eta Cassiopeiae Achird 00 49 +57.8 122.6 -5.1 G0V+K7V 3.46 4.59 167.99 0.62 19
274. Eta Ceti Dheneb 01 09 -10.2 137.2 -72.6 K2III 3.46 0.67 27.73 0.71 118
275. Chi Carinae 07 57 -53.0 266.7 -12.3 B3IV 3.46 -1.91 8.43 0.52 390
276. Delta Bootis 15 16 +33.3 053.1 +58.4 G8III 3.46 0.69 27.94 0.61 117
277. Gamma Ceti Kaffaljidhma 02 43 +03.2 168.9 -49.4 A3V+F3V+K5V 3.47 1.47 39.78 0.95 82
278. Eta Leonis 10 07 +16.8 219.5 +50.8 A0Ib 3.48 -5.60 1.53 0.77 2100
279. Eta Herculis 16 43 +38.9 062.3 +40.9 G8III 3.48 0.80 29.11 0.52 112
280. Tau Ceti 01 44 -15.9 173.1 -73.4 G8V 3.49 5.68 274.17 0.80 12
281. Sigma Canis Majoris 07 02 -27.9 239.2 -10.3 K7Ib 3.49 -4.37 2.68 0.59 1200
282. Nu Ursae Majoris Alula Borealis 11 18 +33.1 190.7 +69.1 K3II 3.49 -2.07 7.74 0.79 420
283. Beta Bootis Nekkar 15 02 +40.4 067.6 +60.0 G8III 3.49 -0.64 14.91 0.57 220
284. Alpha Telescopii 18 27 -46.0 348.7 -15.2 B3IV 3.49 -0.93 13.08 0.71 250
285. Epsilon Gruis 22 49 -51.3 338.3 -56.5 A3V 3.49 0.49 25.16 0.68 130
286. Kappa Canis Majoris 06 50 -32.5 242.4 -14.5 B1.5IV 3.50 -3.42 4.13 0.50 790
287. Delta Geminorum Wasat 07 20 +22.0 196.0 +15.9 F2IV+K3V 3.50 2.22 55.45 0.85 59
288. Iota Cephei 22 50 +66.2 111.1 +6.2 K0III 3.50 0.76 28.27 0.52 115
289. Gamma Sagittae 19 59 +19.5 58.0 -5.2 K5III 3.51 -1.11 11.90 0.71 270
290. Mu Pegasi Sadalbari 22 50 +24.6 90.7 -30.6 G8III 3.51 0.74 27.95 0.77 117
291. Delta Eridani Rana 03 43 -09.8 198.1 -46.0 K0IV 3.52 3.74 110.58 0.88 29
292. Omicron Leonis Subra 09 41 +09.9 224.6 +42.1 A9V+F6V 3.52 0.43 24.12 0.97 135
293. Phi Velorum Tseen Ke 09 57 -54.6 279.4 +0.1 B5Ib 3.52 -5.34 1.69 0.50 1900
294. Xi² Sagittarii 18 58 -21.1 14.6 -10.8 K0II 3.52 -1.77 8.76 0.99 370
295. Theta Pegasi Baham 22 10 +06.2 67.4 -38.7 A2V 3.52 1.16 33.77 0.85 97
296. Epsilon Tauri Ain 04 29 +19.2 177.6 -19.9 K0III 3.53 0.15 21.04 0.82 155
297. Beta Cancri Tarf 08 17 +09.2 214.3 +23.1 K4III 3.53 -1.24 11.23 0.97 290
298. Xi Hydrae 11 33 -31.9 284.1 +28.1 G8III 3.54 0.55 25.23 0.83 130
299. Mu Serpentis 15 50 -03.4 4.6 +37.3 A0V 3.54 0.14 20.94 0.82 155
300. Xi Serpentis 17 38 -15.4 10.6 +8.7 F0III 3.54 0.99 30.93 1.03 105

Column 1: Approximate rank of the star in order of apparent magnitude.
Column 2: Bayer name for the star.
Column 3: Proper name of the star. Usually a weird arabic name. :)
Column 4: Right Ascension in hours and minutes for epoch 2000.
Column 5: Declination in degrees for epoch 2000.
Column 6: Galactic longitude of the star.
Column 7: Galactic latitude of the star.
Column 8: Spectral classification of the main stars in the system.
Column 9: Apparent visual magnitude of the star. A letter 'v' means the magnitude varies by
more than 0.1. A letter 'e' means that the star is an eclipsing binary.
Column 10: Absolute magnitude of the star. A letter 'v' means the magnitude varies by more
than 0.1.
Column 11: The Hipparcos parallax of the star (milli-arcseconds).
Column 12: The error in the parallax (milli-arcseconds).
Column 13: The distance in light years (=3.2616/parallax).

References:
ESA, (1997), The Hipparcos Catalogue.
Hoffleit D, Warren Jr W, (1991), Harvard Revised Bright Star Catalogue, 5th Edition.