2001 Einstein information

2001 Einstein
	Shape model of Einstein from its lightcurve
Discovery
Discovered by	P. Wild
Discovery site	Zimmerwald Obs.
Discovery date	5 March 1973
Designations
MPC designation	(2001) Einstein
Named after	Albert Einstein (physicist)
Alternative designations	1973 EB
Minor planet category	main-belt · Hungaria
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	43.43 yr (15,864 days)
Aphelion	2.1242 AU
Perihelion	1.7430 AU
Semi-major axis	1.9336 AU
Eccentricity	0.0986
Orbital period (sidereal)	2.69 yr (982 days)
Mean anomaly	150.59°
Mean motion	0° 21m 59.76s / day
Inclination	22.683°
Longitude of ascending node	357.08°
Argument of perihelion	217.74°
Physical characteristics
Mean diameter	3.975±0.154 km; 5.66 km (calculated)
Synodic rotation period	5.4846±0.0001 h; 5.485±0.002 h; 5.48503±0.00005 h (S); 5.487±0.001 h
Geometric albedo	0.40 (assumed); 0.810±0.169
Spectral type	X (Tholen), Xe (SMASS); X · E; B–V = 0.720; U–B = 0.261
Absolute magnitude (H)	12.85

2001 Einstein (prov. designation: 1973 EB) is a bright Hungaria asteroid from the innermost region of the asteroid belt. It was discovered by Swiss astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland, on 5 March 1973.^[3] The X-type asteroid (Xe) has a rotation period of 5.5 hours and measures approximately 5 kilometers (3.1 miles) in diameter. It is named after physicist Albert Einstein (1879–1955).^[2]

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2001 Einstein information

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Discovery^[1]
Shape model of Einstein from its lightcurve
Discovered by	P. Wild
Discovery site	Zimmerwald Obs.
Discovery date	5 March 1973
Designations
MPC designation	(2001) Einstein
Named after	Albert Einstein (physicist)^[2]
Alternative designations	1973 EB
Minor planet category	main-belt · Hungaria^[3]^[4]
Orbital characteristics^[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	43.43 yr (15,864 days)
Aphelion	2.1242 AU
Perihelion	1.7430 AU
Semi-major axis	1.9336 AU
Eccentricity	0.0986
Orbital period (sidereal)	2.69 yr (982 days)
Mean anomaly	150.59°
Mean motion	0° 21^m 59.76^s / day
Inclination	22.683°
Longitude of ascending node	357.08°
Argument of perihelion	217.74°
Physical characteristics
Mean diameter	3.975±0.154 km^[5]^[6] 5.66 km (calculated)^[7]
Synodic rotation period	5.4846±0.0001 h^[8] 5.485±0.002 h^[9] 5.48503±0.00005 h (S)^[10] 5.487±0.001 h^[11]
Geometric albedo	0.40 (assumed)^[7] 0.810±0.169^[5]^[6]
Spectral type	X (Tholen), Xe (SMASS)^[1] X^[7] · E^[5] B–V = 0.720^[1] U–B = 0.261^[1]
Absolute magnitude (H)	12.85^[1]^[5]^[7]