20325 Julianoey information

20325 Julianoey
Discovery
Discovered by	Spacewatch
Discovery site	Kitt Peak National Obs.
Discovery date	21 April 1998
Designations
MPC designation	(20325) Julianoey
Named after	Julian Oey ; (Australian photometrist)
Alternative designations	1998 HO27 · 1977 TT6; 2004 BB159
Minor planet category	main-belt · Vestian ; background
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	63.43 yr (23,169 days)
Aphelion	2.5620 AU
Perihelion	2.1956 AU
Semi-major axis	2.3788 AU
Eccentricity	0.0770
Orbital period (sidereal)	3.67 yr (1,340 days)
Mean anomaly	338.89°
Mean motion	0° 16m 6.96s / day
Inclination	6.1000°
Longitude of ascending node	98.173°
Argument of perihelion	257.30°
Known satellites	1 (D: 1.42 km; P:23.54 h)
Physical characteristics
Dimensions	4.73 (derived); 4.942±0.216 km; 6.81 km (calculated)
Synodic rotation period	3.24474±0.0008 h
Geometric albedo	0.20 (assumed); 0.416±0.044
Spectral type	S (assumed)
Absolute magnitude (H)	13.10 · 13.2 · 13.29±0.39

20325 Julianoey (provisional designation 1998 HO₂₇) is a Vestian asteroid and a synchronous binary system from the inner regions of the asteroid belt, approximately 5 kilometers (3 miles) in diameter. It was discovered on 21 April 1998, by astronomers of the Spacewatch survey at Kitt Peak National Observatory near Tucson, Arizona. The asteroid was named after Australian photometrist Julian Oey.^[2] The discovery of its minor-planet moon was announced in December 2014.^[5]^[7]

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