5222 Ioffe

5222 Ioffe

Rotating frame animation in reference to Jupiter. Each frame 81 years.
Discovery
Discovered by	N. S. Chernykh
Discovery site	CrAO (Nauchnyj)
Discovery date	11 October 1980
Designations
MPC designation	5222 Ioffe
Named after	Abram Ioffe
Alternative names	1980 TL13; 1978 LP 1989 TG1
Minor planet category	main-belt
Orbital characteristics
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc	62.74 yr (22,914 days)
Aphelion	3.1720 AU
Perihelion	2.3777 AU
Semi-major axis	2.7749 AU
Eccentricity	0.1431
Orbital period	4.62 yr (1688.3 days)
Mean anomaly	44.501°
Inclination	34.538°
Longitude of ascending node	220.67°
Argument of perihelion	330.86°
Earth MOID	1.3972 AU
Physical characteristics
Rotation period	19.4 h
Geometric albedo	0.1463
Spectral type	B (SMASSII)
Absolute magnitude (H)	11.4 mag

5222 Ioffe (1980 TL₁₃) is a main-belt asteroid discovered on October 11, 1980 by Chernykh, N. S. at Nauchnyj. It is the largest of the Palladian asteroids apart from Pallas itself.

Photometric observations of this asteroid collected during 2006 show a rotation period of 19.4 ± 0.2 hours with a brightness variation of 0.27 ± 0.03 magnitude.

Rotating frame animation in reference to Pallas, showing how Ioffe is in the group with the obvious 1:1 resonance.

External links

• JPL Small-Body Database Browser on 5222 Ioffe