205 Martha

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205 Martha

Discovery
Discovered by	Johann Palisa
Discovery date	October 13, 1879
Designations
Alternative names	n/a
Minor planet category	Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	430.602 Gm (2.878 AU)
Perihelion	400.314 Gm (2.676 AU)
Semi-major axis	415.458 Gm (2.777 AU)
Eccentricity	0.036
Orbital period	1690.412 d (4.63 a)
Average orbital speed	17.87 km/s
Mean anomaly	29.923°
Inclination	10.695°
Longitude of ascending node	212.069°
Argument of perihelion	171.423°
Physical characteristics
Dimensions	81.0 km
Mass	unknown
Mean density	unknown
Equatorial surface gravity	unknown
Escape velocity	unknown
Rotation period	9.637 h
Albedo	0.054
Temperature	unknown
Spectral type	C
Absolute magnitude	9.23

205 Martha is a large Main belt asteroid. It is a dark, primitive carbonaceous C-type asteroid.

It was discovered by Johann Palisa on October 13, 1879 in Pola and was named after Martha, a woman in the New Testament.

[edit] References

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Lightcurve Parameters
• Asteroid Albedo Compilation

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