Name: 17P Holmes
Object type:short period comet
Semimajor axis: 3.6174 AU
Eccentricity: 0.43242
Inclination: 19.113 degrees
Longitude of ascending node: 326.867 degrees
Argument of perihelion: 24.259 degrees
Time of perihelion : JD 2454225.0 (12h UT, 4 May 2007)
Perihelion distance: 2.0532 AU
Orbital period: 2513 days
Holmes was closest to Earth on November 4th, when it was 1.6147 AU from us.
Here's an ephemeris for Holmes that I generated from the above orbital elements.
Year = 2007...
DATE, distance, right ascension, declination
12nov, 1.622 AU, 3h 28m 47s, +50d 26' 35"
13nov, 1.623 AU, 3h 27m 33s, +50d 23' 50"
14nov, 1.626 AU, 3h 26m 20s, +50d 20' 42"
15nov, 1.628 AU, 3h 25m 06s, +50d 17' 13"
16nov, 1.630 AU, 3h 23m 52s, +50d 13' 23"
17nov, 1.633 AU, 3h 22m 41s, +50d 09' 13"
18nov, 1.636 AU, 3h 21m 29s, +50d 04' 42"
19nov, 1.640 AU, 3h 20m 18s, +49d 59' 51"
20nov, 1.643 AU, 3h 19m 08s, +49d 54' 40"
25nov, 1.664 AU, 3h 13m 33s, +49d 24' 15"
01dec, 1.697 AU, 3h 07m 40s, +48d 39' 03"
15dec, 1.808 AU, 2h 58m 32s, +46d 30' 05"
Year = 2008...
DATE, distance, right ascension, declination
01jan, 1.997 AU, 2h 57m 02s, +43d 44' 36"
15jan, 2.190 AU, 3h 02m 54s, +41d 45' 12"
01feb, 2.455 AU, 3h 16m 41s, +39d 52' 28"
15feb, 2.690 AU, 3h 32m 04s, +38d 45' 11"
01mar, 2.948 AU, 3h 51m 28s, +37d 53' 12"
15mar, 3.188 AU, 4h 11m 30s, +37d 17' 37"
For reference, the position of Alpha Persei, or Mirfak, is
RA = 3h 24m, dec = +49d 52'
2007-11-16 04:19:03
·
answer #4
·
answered by elohimself 4
·
0⤊
2⤋