440 Theodora

440 Theodora
	A three-dimensional model of 440 Theodora based on its light curve.
Discovery
Discovered by	E. F. Coddington
Discovery date	October 13, 1898
Designations
Alternative names	1898 EC
Minor planet category	Main belt
Orbital characteristics
	Epoch 30 January 2005 (JD 2453400.5)
Aphelion	366.262 Gm (2.448 AU)
Perihelion	295.119 Gm (1.973 AU)
Semi-major axis	330.691 Gm (2.211 AU)
Eccentricity	0.108
Orbital period (sidereal)	1200.425 d (3.29 a)
Average orbital speed	20.03 km/s
Mean anomaly	45.049°
Inclination	1.598°
Longitude of ascending node	292.35°
Argument of perihelion	178.848°
Physical characteristics
Dimensions	11 - 24 km
Mass	unknown
Mean density	unknown
Surface gravity	unknown
Escape velocity	unknown
Synodic rotation period	unknown
Albedo	unknown
Temperature	unknown
Spectral type	unknown
Absolute magnitude (H)	11.5

440 Theodora is a small Main belt asteroid.

It was discovered by E. F. Coddington on October 13, 1898 at Mount Hamilton. It was his second asteroid discovery.

External links

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