(315898) 2008 QD4
Appearance
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Discovery | |
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Discovered by | Mallorca Obs. |
Discovery site | La Sagra Obs. |
Discovery date | 25 August 2008 |
Designations | |
(315898) 2008 QD4 | |
centaur[1][2][3] | |
Orbital characteristics[1] | |
Epoch 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 1 | |
Observation arc | 2744 days (7.51 yr) |
Aphelion | 11.364 AU (1.7000 Tm) (Q) |
Perihelion | 5.4531 AU (815.77 Gm) (q) |
8.4087 AU (1.25792 Tm) (a) | |
Eccentricity | 0.35149 (e) |
24.38 yr (8906.16 d) | |
79.666° (M) | |
0° 2m 25.516s / day (n) | |
Inclination | 42.028° (i) |
344.70° (Ω) | |
68.923° (ω) | |
Earth MOID | 4.6941 AU (702.23 Gm) |
Jupiter MOID | 1.46448 AU (219.083 Gm) |
TJupiter | 2.387 |
Physical characteristics | |
31 km[4] | |
0.05 (assumed)[4] | |
11.4[1] | |
(315898) 2008 QD4, prov. designation: 2008 QD4, is a centaur orbiting in the outer Solar System with a perihelion greater than Jupiter and a semi-major axis less than Saturn.
Perihelion
[edit]2008 QD4 is listed as a centaur by the Minor Planet Center,[3] Jet Propulsion Laboratory,[1] and the Deep Ecliptic Survey (DES).[2] Of numbered objects listed as a centaur by all 3 major institutions, (315898) 2008 QD4 has the smallest perihelion distance.[3]
It came to perihelion in August 2010.[1]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/49/2008QD4-orbit.png/450px-2008QD4-orbit.png)
See also
[edit]References
[edit]- ^ a b c d e "JPL Small-Body Database Browser: (2008 QD4)" (last observation: 2008-10-08). Retrieved 8 April 2016.
- ^ a b Marc W. Buie (1 October 2008). "Orbit Fit and Astrometric record for 08QD4". SwRI (Space Science Department). Retrieved 17 October 2008.
- ^ a b c "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 17 October 2008.
- ^ a b assumed to have an albedo just above a typical comet
External links
[edit]- (315898) 2008 QD4 at AstDyS-2, Asteroids—Dynamic Site
- (315898) 2008 QD4 at the JPL Small-Body Database