957 Camelia

957 Camelia
Discovery
Discovered by	K. Reinmuth
Discovery site	Heidelberg Obs.
Discovery date	7 September 1921
Designations
MPC designation	(957) Camelia
Pronunciation	/kəˈmiːliə/
Named after	Camellia ; (genus of flowers)
Alternative designations	A921 RF · 1932 AG; 1958 BM · 1921 JX
Minor planet category	main-belt · (outer); background · slow
Orbital characteristics
	Epoch 31 May 2020 (JD 2459000.5)
	Uncertainty parameter 0
Observation arc	97.94 yr (35,773 d)
Aphelion	3.1595 AU
Perihelion	2.6884 AU
Semi-major axis	2.9240 AU
Eccentricity	0.0806
Orbital period (sidereal)	5.00 yr (1,826 d)
Mean anomaly	199.16°
Mean motion	0° 11m 49.56s / day
Inclination	14.761°
Longitude of ascending node	232.78°
Argument of perihelion	224.57°
Physical characteristics
Mean diameter	64.36±1.01 km; 73.73±1.5 km; 91.548±0.450 km;
Synodic rotation period	150±10 h
Geometric albedo	0.025±0.004; 0.0429±0.002; 0.056±0.002;
Spectral type	C (S3OS2-TH); Cb (S3OS2-BB);
Absolute magnitude (H)	9.9

957 Camelia /kəˈmiːliə/ is a large, carbonaceous background asteroid and slow rotator, approximately 70 kilometers (43 miles) in diameter. It is located in the outer regions of the asteroid belt and was discovered on 7 September 1921, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany and given the provisional designations A921 RF and 1921 JX. The C-type asteroid (Cb) has a long rotation period of at least 150 hours. It was named after the genus of flowering plants, Camellia.

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