791 Ani information

791 Ani
	Modelled shape of Ani from its lightcurve
Discovery
Discovered by	G. Neujmin
Discovery site	Simeiz Obs.
Discovery date	29 June 1914
Designations
MPC designation	(791) Ani
Named after	Historic city of Ani
Alternative designations	A914 MB · 1949 WH; 1964 PO · 1975 XM; 1914 UV
Minor planet category	main-belt · (outer); Meliboea · Bg
Orbital characteristics
	Epoch 31 May 2020 (JD 2459000.5)
	Uncertainty parameter 0
Observation arc	104.08 yr (38,017 d)
Aphelion	3.7242 AU
Perihelion	2.5197 AU
Semi-major axis	3.1219 AU
Eccentricity	0.1929
Orbital period (sidereal)	5.52 yr (2,015 d)
Mean anomaly	33.057°
Mean motion	0° 10m 43.32s / day
Inclination	16.381°
Longitude of ascending node	129.81°
Argument of perihelion	201.49°
Physical characteristics
Dimensions	65.7 km × 103.5 km
Mean diameter	97.87±1.15 km; 99.799±11.027 km; 103.52±1.9 km;
Synodic rotation period	11.174±0.004 h
Pole ecliptic latitude	(94.0°, −25.0°) (λ1/β1); (269.0°, 4.0°) (λ2/β2);
Geometric albedo	0.0329±0.001; 0.035±0.016; 0.037±0.001;
Spectral type	Tholen = C ; C (S3OS2-TH); Ch (S3OS2-BB); B–V = 0.708±0.020; U–B = 0.282±0.026;
Absolute magnitude (H)	9.2; 9.25;

791 Ani (prov. designation: A914 MB or 1914 UV) is a very large asteroid of the Meliboea family, located in the outer regions of the asteroid belt. It was discovered on 29 June 1914, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula.^[1] The dark carbonaceous C-type asteroid has a rotation period of 11.2 hours and measures approximately 65.7 × 103.5 kilometers, with a mean diameter of 100 km (62 mi). It was named after the historic Armenian city of Ani.^[2]

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791 Ani information

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Species

Discovery ^[1]
Modelled shape of Ani from its lightcurve
Discovered by	G. Neujmin
Discovery site	Simeiz Obs.
Discovery date	29 June 1914
Designations
MPC designation	(791) Ani
Named after	Historic city of Ani ^[2]
Alternative designations	A914 MB · 1949 WH 1964 PO · 1975 XM 1914 UV
Minor planet category	main-belt ^[1]^[3] · (outer) Meliboea ^[4]^[5] · Bg ^[6]
Orbital characteristics ^[3]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc	104.08 yr (38,017 d)
Aphelion	3.7242 AU
Perihelion	2.5197 AU
Semi-major axis	3.1219 AU
Eccentricity	0.1929
Orbital period (sidereal)	5.52 yr (2,015 d)
Mean anomaly	33.057°
Mean motion	0° 10^m 43.32^s / day
Inclination	16.381°
Longitude of ascending node	129.81°
Argument of perihelion	201.49°
Physical characteristics
Dimensions	65.7 km × 103.5 km
Mean diameter	97.87±1.15 km^[7] 99.799±11.027 km^[8] 103.52±1.9 km^[9]
Synodic rotation period	11.174±0.004 h^[10]
Pole ecliptic latitude	(94.0°, −25.0°) (λ₁/β₁)^[11] (269.0°, 4.0°) (λ₂/β₂)^[11]
Geometric albedo	0.0329±0.001^[9] 0.035±0.016^[8] 0.037±0.001^[7]
Spectral type	Tholen = C ^[3] C (S3OS2-TH)^[12] Ch (S3OS2-BB)^[12] B–V = 0.708±0.020^[3] U–B = 0.282±0.026^[3]
Absolute magnitude (H)	9.2^[1]^[3] 9.25^[7]^[8]^[9]^[11]