976 Benjamina

976 Benjamina
Discovery
Discovered by	B. Jekhovsky
Discovery site	Algiers Obs.
Discovery date	27 March 1922
Designations
MPC designation	(976) Benjamina
Named after	Benjamin Jekhowsky Jr.; (discoverer's son)
Alternative designations	A922 FD · A910 AB; 1922 LU · 1910 AB
Minor planet category	main-belt · (outer); background
Orbital characteristics
	Epoch 31 May 2020 (JD 2459000.5)
	Uncertainty parameter 0
Observation arc	109.34 yr (39,935 d)
Aphelion	3.5276 AU
Perihelion	2.8744 AU
Semi-major axis	3.2010 AU
Eccentricity	0.1020
Orbital period (sidereal)	5.73 yr (2,092 d)
Mean anomaly	43.757°
Mean motion	0° 10m 19.56s / day
Inclination	7.7121°
Longitude of ascending node	243.76°
Argument of perihelion	319.60°
Physical characteristics
Mean diameter	79.94±1.16 km; 80.53±2.5 km; 83.195±0.542 km;
Synodic rotation period	9.701±0.002 h
Pole ecliptic latitude	(354.0°, 80.0°) (λ1/β1)
Geometric albedo	0.052±0.006; 0.0559±0.004; 0.057±0.002;
Spectral type	Tholen = XD:; B–V = 0.740±0.020; U–B = 0.250±0.030;
Absolute magnitude (H)	9.3

976 Benjamina (prov. designation: A922 FD or 1922 LU) is a dark background asteroid from the outer regions of the asteroid belt, approximately 81 kilometers (50 miles) in diameter. It was discovered on 27 March 1922, by Russian-French astronomer Benjamin Jekhowsky at the Algiers Observatory in North Africa. The large X/D-type asteroid has a rotation period of 9.7 hours and is likely regular in shape. It was named after the discoverer's son.