682 Hagar information

682 Hagar
	Modelled shape of Hagar from its lightcurve
Discovery
Discovered by	A. Kopff
Discovery site	Heidelberg Obs.
Discovery date	17 June 1909
Designations
MPC designation	(682) Hagar
Pronunciation	/ˈheɪɡɑːr/
Named after	Hagar (Biblical woman)
Alternative designations	A909 MA · 1943 GK; 1953 VU3 · 1975 VO5; 1909 HA
Minor planet category	main-belt · (middle); Eunomia
Orbital characteristics
	Epoch 31 May 2020 (JD 2459000.5)
	Uncertainty parameter 0
Observation arc	110.96 yr (40,529 d)
Aphelion	3.1105 AU
Perihelion	2.1966 AU
Semi-major axis	2.6536 AU
Eccentricity	0.1722
Orbital period (sidereal)	4.32 yr (1,579 d)
Mean anomaly	225.55°
Mean motion	0° 13m 40.8s / day
Inclination	11.507°
Longitude of ascending node	190.78°
Argument of perihelion	105.08°
Physical characteristics
Mean diameter	19±4 km
Synodic rotation period	4.8503±0.0001 h
Pole ecliptic latitude	(56.0°, −78.0°) (λ1/β1); (255.0°, −57.0°) (λ2/β2);
Geometric albedo	0.057 (assumed)
Spectral type	S (assumed); C (assumed); V–R = 0.400±0.040;
Absolute magnitude (H)	12.2; 12.27±0.07;

682 Hagar (prov. designation: A909 MA or 1909 HA) is an Eunomia asteroid from the central regions of the asteroid belt. It was discovered on 17 June 1909, by German astronomer August Kopff at the Heidelberg-Königstuhl State Observatory.^[1] The presumed S-type asteroid has a short rotation period of 4.9 hours and measures approximately 19 kilometers (12 miles) in diameter. Possibly inspired by the asteroid's provisional designation "1909 HA", it was named for the biblical woman Hagar.^[3]

^ ^a ^b ^c ^d Cite error: The named reference MPC-object was invoked but never defined (see the help page).
^ Noah Webster (1884) A Practical Dictionary of the English Language
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[2] Noah Webster (1884) A Practical Dictionary of the English Language

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682 Hagar information

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Discovery ^[1]
Modelled shape of Hagar from its lightcurve
Discovered by	A. Kopff
Discovery site	Heidelberg Obs.
Discovery date	17 June 1909
Designations
MPC designation	(682) Hagar
Pronunciation	/ˈheɪɡɑːr/^[2]
Named after	Hagar (Biblical woman)^[3]
Alternative designations	A909 MA · 1943 GK 1953 VU₃ · 1975 VO₅ 1909 HA
Minor planet category	main-belt ^[1]^[4] · (middle) Eunomia ^[5]^[6]^[7]
Orbital characteristics ^[4]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc	110.96 yr (40,529 d)
Aphelion	3.1105 AU
Perihelion	2.1966 AU
Semi-major axis	2.6536 AU
Eccentricity	0.1722
Orbital period (sidereal)	4.32 yr (1,579 d)
Mean anomaly	225.55°
Mean motion	0° 13^m 40.8^s / day
Inclination	11.507°
Longitude of ascending node	190.78°
Argument of perihelion	105.08°
Physical characteristics
Mean diameter	19±4 km^[8]
Synodic rotation period	4.8503±0.0001 h^[8]^[a]
Pole ecliptic latitude	(56.0°, −78.0°) (λ₁/β₁)^[9] (255.0°, −57.0°) (λ₂/β₂)^[9]
Geometric albedo	0.057 (assumed)^[8]
Spectral type	S (assumed)^[10] C (assumed)^[8] V–R = 0.400±0.040^[8]
Absolute magnitude (H)	12.2^[1]^[4] 12.27±0.07^[10]^[8]