(315898) 2008 QD₄

(315898) 2008 QD₄
	Centaur 2008 QD4 (apmag 19) as seen with 24" telescope
Discovery
Discovered by	Mallorca Obs.
Discovery site	La Sagra Obs.
Discovery date	25 August 2008
Designations
MPC designation	(315898) 2008 QD4
Minor planet category	centaur
Orbital characteristics
	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)
Semi-major axis	8.4087 AU (1.25792 Tm) (a)
Eccentricity	0.35149 (e)
Orbital period (sidereal)	24.38 yr (8906.16 d)
Mean anomaly	79.666° (M)
Mean motion	0° 2m 25.516s / day (n)
Inclination	42.028° (i)
Longitude of ascending node	344.70° (Ω)
Argument of perihelion	68.923° (ω)
Earth MOID	4.6941 AU (702.23 Gm)
Jupiter MOID	1.46448 AU (219.083 Gm)
TJupiter	2.387
Physical characteristics
Mean diameter	31 km
Geometric albedo	0.05 (assumed)
Absolute magnitude (H)	11.4

(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

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]

^ ^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