Astronomy:(470599) 2008 OG19

(470599) 2008 OG₁₉

Discovery
Discovered by	Palomar Observatory team
Discovery site	Palomar Observatory
Discovery date	30 July 2008 (first observation)
Designations
MPC designation	(470599) 2008 OG19
Alternative designations	2008 OG19
Minor planet category	scattered disc
Orbital characteristics
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3 · 1(?)
Observation arc	2596 days (7.11 yr)
|{{{apsis}}}|helion}}	94.004 astronomical unit|AU (14.0628 Tm)
|{{{apsis}}}|helion}}	38.576 AU (5.7709 Tm)
Semi-major axis	66.290 AU (9.9168 Tm)
Eccentricity	0.41807
Orbital period	539.73 yr (197137 d)
Mean anomaly	1.5681°
Mean motion	0° 0m 6.574s /day
Inclination	13.167°
Longitude of ascending node	164.02°
|{{{apsis}}}|helion}}	140.53°
Physical characteristics
Dimensions	619+56 −113 km (assuming albedo of 0.081) 394+57 −63 km (assuming albedo of 0.199)
Mean density	0.609±0.004 g/cm3 0.544+0.042 −0.004 g/cm3 (minimum)
Sidereal rotation period	8.727±0.003 h
Geometric albedo	0.081 (assumed as typical SDO albedo) 0.199 (assumed)
Spectral type	V–R=0.64
Absolute magnitude (H)	4.39±0.07 (R-band) 4.89

(470599) 2008 OG₁₉ (provisional designation 2008 OG₁₉) is a trans-Neptunian object located in the scattered disc. It was discovered on 30 July 2008 through the Palomar Observatory. It displays a large light curve amplitude of 0.437±0.011 magnitudes, implying that it is highly elongated in shape, similar to 20000 Varuna. Based on models for its light curve amplitude, they obtained an approximate density of 0.609 g/cm³ and aspect ratios of b/a = 0.513 and c/a = 0.39.

External links

• (470599) 2008 OG19 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters