(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)
Aphelion	94.004 AU (14.0628 Tm)
Perihelion	38.576 AU (5.7709 Tm)
Semi-major axis	66.290 AU (9.9168 Tm)
Eccentricity	0.41807
Orbital period (sidereal)	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°
Argument of perihelion	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.^[4] It was discovered on 30 July 2008 through the Palomar Observatory.^[2] 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.^[3]