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(315898) 2008 QD4

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(315898) 2008 QD4
Centaur 2008 QD4 (apmag 19) as seen with 24" telescope
Discovery
Discovered byMallorca Obs.
Discovery siteLa Sagra Obs.
Discovery date25 August 2008
Designations
(315898) 2008 QD4
centaur[1][2][3]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 1
Observation arc2744 days (7.51 yr)
Aphelion11.364 AU (1.7000 Tm) (Q)
Perihelion5.4531 AU (815.77 Gm) (q)
8.4087 AU (1.25792 Tm) (a)
Eccentricity0.35149 (e)
24.38 yr (8906.16 d)
79.666° (M)
0° 2m 25.516s / day (n)
Inclination42.028° (i)
344.70° (Ω)
68.923° (ω)
Earth MOID4.6941 AU (702.23 Gm)
Jupiter MOID1.46448 AU (219.083 Gm)
TJupiter2.387
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

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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]

Of objects listed as a centaur by all 3 major institutions, (315898) 2008 QD4 has the smallest perihelion distance. Due to a 41° orbital inclination, it is above the ecliptic plane when crossing Jupiter's orbit, and below the ecliptic when crossing Saturn's orbit.

See also

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References

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  1. ^ a b c d e "JPL Small-Body Database Browser: (2008 QD4)" (last observation: 2008-10-08). Retrieved 8 April 2016.
  2. ^ a b Marc W. Buie (1 October 2008). "Orbit Fit and Astrometric record for 08QD4". SwRI (Space Science Department). Retrieved 17 October 2008.
  3. ^ a b c "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 17 October 2008.
  4. ^ a b assumed to have an albedo just above a typical comet
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