907 Rhoda

907 Rhoda
Discovery
Discovered by	M. F. Wolf
Discovery site	Heidelberg Obs.
Discovery date	12 November 1918
Designations
MPC designation	(907) Rhoda
Pronunciation	/ˈroʊdə/
Named after	Rhoda Barnard; (wife of E. E. Barnard)
Alternative designations	A918 VA · A901 BA; A913 SC · 1918 EU; 1913 SC · 1901 BA
Minor planet category	main-belt · (middle); background
Orbital characteristics
	Epoch 31 May 2020 (JD 2459000.5)
	Uncertainty parameter 0
Observation arc	118.67 yr (43,343 d)
Aphelion	3.2553 AU
Perihelion	2.3468 AU
Semi-major axis	2.8010 AU
Eccentricity	0.1622
Orbital period (sidereal)	4.69 yr (1,712 d)
Mean anomaly	183.55°
Mean motion	0° 12m 36.72s / day
Inclination	19.525°
Longitude of ascending node	42.980°
Argument of perihelion	88.326°
Physical characteristics
Mean diameter	62.73±1.7 km; 75.22±0.83 km; 82.660±0.340 km;
Synodic rotation period	22.44±0.02 h
Geometric albedo	0.032±0.005; 0.040±0.001; 0.0560±0.003;
Spectral type	Tholen = C; SMASS = Xk; C0 (Barucci); B–V = 0.709±0.020; U–B = 0.269±0.029;
Absolute magnitude (H)	9.7

907 Rhoda is a large background asteroid from the central region of the asteroid belt, that measures approximately 75 kilometers (47 miles) in diameter. It was discovered on 12 November 1918, by astronomer Max Wolf at the Heidelberg Observatory in southwest Germany. The dark C/X-type asteroid has a long rotation period of 22.4 hours and is likely spherical in shape. It was named after Rhoda Barnard, wife of American astronomer Edward Emerson Barnard (1857–1923).