154 Bertha

154 Bertha
Orbital characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html)
Orbit type Main belt
Semimajor axis 3.189 AU
Perihelion distance 2.920 AU
Aphelion distance 3.459 AU
Orbital period 5.70 years
Inclination 21.03°
Eccentricity 0.084
Physical characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html)
Diameter 184.9 km
Rotation period 12 hours
Abs. magnitude 7.58
Albedo 4 (http://dorothy.as.arizona.edu/DSN/IRAS/index_iras.html) 0.048
History 2 (http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html)
Discoverer P. M. Henry, 1875

154 Bertha is a very dark and very large outer Main belt asteroid.

It was discovered by brothers Paul Henry and Prosper Henry on November 4, 1875, but the credit from the discovery was given to Prosper. It is probably named after Berthe Martin-Flammarion, sister of the astronomer Camille Flammarion.


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The minor planets
Vulcanoids | Main belt | Groups and families | Near-Earth objects | Jupiter Trojans
Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper belt | Oort cloud
(For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system)
(For a complete listing, see: List of asteroids. For pronunciation, see: Pronunciation of asteroid names.)
de:Bertha (Asteroid)

es:(154) Berta

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