209 Dido

209 Dido
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "209_Dido".

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**209 Dido**
Discovery
Discovered by	C. H. F. Peters
Discovery date	October 22, 1879
Designations
Alternate name	A909 AB, A909 GB, A912 RB
Minor planet category	Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	501.211 Gm (3.35 AU)
Perihelion	440.569 Gm (2.945 AU)
Semi-major axis	470.89 G m (3.148 AU)
Eccentricity	0.064
Orbital period	2039.771 d (5.58 a)
Average orbital speed	16.79 km/s
Mean anomaly	287.741°
Inclination	7.181°
Longitude of ascending node	0.844°
Argument of perihelion	250.781°
Physical characteristics
Dimensions	160.0 km
Mass	unknown
Mean density	unknown
Equatorial surface gravity	unknown
Escape velocity	unknown
Rotation period	8 h
Albedo	0.035
Temperature	unknown
Spectral type	C
Absolute magnitude (H)	8.24

209 Dido is a very large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of privitive carbonaceous materials. Like many asteroids of its type, it has an extremely low albedo.

It was discovered by C. H. F. Peters on October 22, 1879 in Clinton, New York and was named after the mythical Carthaginian queen Dido.

References

v • d • e Minor planets navigator

208 Lacrimosa · 209 Dido · 210 Isabella

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Lists: Minor planets · Asteroid groups and families · Binary asteroids · Asteroid moons See also: Near-Earth object · Dwarf planet · Planet · Solar System · Pronunciation of asteroid names · Meanings of minor planet names.

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