893 Leopoldina

893 Leopoldina
Discovery
Discovered by	M. F. Wolf
Discovery site	Heidelberg Obs.
Discovery date	31 May 1918
Designations
MPC designation	(893) Leopoldina
Named after	Academy of Sciences Leopoldina; (Germany's nat'l academy)
Alternative designations	A918 KD · 1935 OL; 1918 DS
Minor planet category	main-belt · (outer); background
Orbital characteristics
	Epoch 31 May 2020 (JD 2459000.5)
	Uncertainty parameter 0
Observation arc	101.67 yr (37,134 d)
Aphelion	3.5069 AU
Perihelion	2.6027 AU
Semi-major axis	3.0548 AU
Eccentricity	0.1480
Orbital period (sidereal)	5.34 yr (1,950 d)
Mean anomaly	291.98°
Mean motion	0° 11m 4.56s / day
Inclination	17.025°
Longitude of ascending node	144.94°
Argument of perihelion	222.40°
Physical characteristics
Dimensions	82.8 km × 59.8 km
Mean diameter	75.55±0.97 km; 76.14±4.5 km; 85.992±0.577 km;
Synodic rotation period	14.115±0.003 h
Geometric albedo	0.039±0.007; 0.0497±0.006; 0.051±0.001;
Spectral type	Tholen = XF; C (S3OS2); B–V = 0.670±0.031; U–B = 0.226±0.044;
Absolute magnitude (H)	9.6

893 Leopoldina (prov. designation: A918 KD or 1918 DS) is a large and elongated background asteroid from the outer regions of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg Observatory on 31 May 1918. The dark carbonaceous C-type asteroid has a rotation period of 14.1 hours and measures approximately 76 kilometers (47 miles) in diameter. It was named for Germany's national academy, the Academy of Sciences Leopoldina in Halle.