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2006-10-18 00:34:58 · 4 answers · asked by Anonymous in Science & Mathematics Astronomy & Space

4 answers

"Quaoar" redirects here. For the Tongva god, see Quaoar (mythology).

50000 Quaoar
Discovery A
Discoverer Chad Trujillo,
Michael E. Brown
Discovery date June 4, 2002
Alternate
designations B 2002 LM60
Category Kuiper belt
Orbital elements C
Epoch October 22, 2004 (JD 2453300.5)
Eccentricity (e) 0.034
Semi-major axis (a) 6.493296 Tm (43.405 AU)
Perihelion (q) 6.270316 Tm (41.914 AU)
Aphelion (Q) 6.716275 Tm (44.896 AU)
Orbital period (P) 104449.918 d (285.97 a)
Mean orbital speed 4.52 km/s
Inclination (i) 7.983°
Longitude of the
ascending node (Ω) 188.791°
Argument of
perihelion (ω) 154.850°
Mean anomaly (M) 273.737°
Physical characteristics D
Dimensions 989 - 1346? km
Mass 1.0-2.6×1021 kg
Density 2.0? g/cm³
Surface gravity 0.276-0.376 m/s²
Escape velocity 0.523-0.712 km/s
Rotation period ? d
Spectral class (moderately red) B-V=0.94, V-R=0.64
Absolute magnitude 2.6
Albedo (geometric) 0.10
Mean surface
temperature ~43 K

50000 Quaoar (pronounced kwaa'·waar or kwow'·ər, English [ˈkwawar], Tongva [ˈqʷɑoɑr]) [1] is a Trans-Neptunian object orbiting the Sun in the Kuiper belt. It was discovered on June 4, 2002 by astronomers Chad Trujillo and Michael Brown at the California Institute of Technology from images acquired at the Samuel Oschin Telescope at Palomar Observatory. This discovery was announced on October 7, 2002, at a meeting of the American Astronomical Society. The earliest precovery turned out to be a May 25, 1954 plate from Palomar Observatory.

It would probably qualify to the category of dwarf planets, given its size inferred from direct observation by Hubble Space Telescope.

Discoverer Chad Trujillo,
Michael E. Brown
Discovery date June 4, 2002
Alternate
designations B 2002 LM60
Category Kuiper belt
Orbital elements C
Epoch October 22, 2004 (JD 2453300.5)
Eccentricity (e) 0.034
Semi-major axis (a) 6.493296 Tm (43.405 AU)
Perihelion (q) 6.270316 Tm (41.914 AU)
Aphelion (Q) 6.716275 Tm (44.896 AU)
Orbital period (P) 104449.918 d (285.97 a)
Mean orbital speed 4.52 km/s
Inclination (i) 7.983°
Longitude of the
ascending node (Ω) 188.791°
Argument of
perihelion (ω) 154.850°
Mean anomaly (M) 273.737°
Physical characteristics D
Dimensions 989 - 1346? km
Mass 1.0-2.6×1021 kg
Density 2.0? g/cm³
Surface gravity 0.276-0.376 m/s²
Escape velocity 0.523-0.712 km/s
Rotation period ? d
Spectral class (moderately red) B-V=0.94, V-R=0.64
Absolute magnitude 2.6
Albedo (geometric) 0.10
Mean surface
temperature ~43 K

2006-10-19 23:07:07 · answer #1 · answered by Anonymous · 0 0

I suspect you mean the awkward-to-spell Kuiper Belt Object, 50000 Quaoar?

It was discovered on June 4, 2002 by astronomers Chad Trujillo and Michael Brown at the California Institute of Technology from images acquired at the Samuel Oschin Telescope at Palomar Observatory.

Diameter: 1250 kilometres
Perihelion 41.914 AU
Aphelion 44.896 AU
Orbital period 104,450 earth days (285.97 earth years)
Mean orbital speed 4.52 kilometres/second

50000 Quaoar's volume is somewhat more than all of the asteroids put together, it is about one tenth the diameter of Earth, one third the diameter of the Moon or about half the size of Pluto.

The planetoid's name follows International Astronomical Union rules by naming all trans-Neptunian objects after creation deities (see planetary nomenclature). "Quaoar" is the name of a creation deity of the Native American Tongva people, native to the area around Los Angeles, where the discovery was named.

2006-10-19 10:33:20 · answer #2 · answered by Articulate_Artichokes 2 · 1 0

In music, an eighth note (American or "German" terminology) or a quaver (British or "classical" terminology) is a note played for one eighth the duration of a whole note, hence the name.

Eighth notes are notated with an oval, filled-in note head and a straight note stem with one flag. A related symbol is the eighth rest (or quaver rest), which denotes a silence for the same duration.

2006-10-18 16:44:07 · answer #3 · answered by veerabhadrasarma m 7 · 0 0

http://en.wikipedia.org/wiki/Quaoar

2006-10-18 03:44:45 · answer #4 · answered by aka DarthDad 5 · 1 0

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