(154) Bertha

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Asteroid
(154) Bertha
Properties of the orbit ( animation )
Orbit type Outer main belt
Major semi-axis 3,192  AU
eccentricity 0.082
Perihelion - aphelion 2.929 AU - 3.455 AU
Inclination of the orbit plane 21 °
Length of the ascending node 36.9 °
Argument of the periapsis 155.4 °
Time of passage of the perihelion October 22, 2008
Sidereal period 5 a 257 d
Mean orbital velocity 16.6 km / s
Physical Properties
Medium diameter 185 km
Albedo 0.0480
Rotation period 22 h 18 min
Absolute brightness 7.58 mag
history
Explorer PM Henry
Date of discovery November 4, 1875
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(154) Bertha is an asteroid of the main belt , which on 4 November 1875 by the French astronomer PM Henry was discovered.

The asteroid was named in honor of a sister of the French astronomer and author Camille Flammarion .

See also