250 Bettina

From Wikipedia, the free encyclopedia

250 Bettina
Discovery A
Discoverer Johann Palisa
Discovery date September 3, 1885
Alternate
designations
B
n/a
Category Main belt
Orbital elements C
Epoch 30 January 2005 (JD 2453400.5)
Eccentricity (e) 0.125
Semi-major axis (a) 471.291 Gm (3.15 AU)
Perihelion (q) 412.522 Gm (2.758 AU)
Aphelion (Q) 530.06 Gm (3.543 AU)
Orbital period (P) 2042.375 d (5.59 a)
Mean orbital speed 16.78 km/s
Inclination (i) 12.844°
Longitude of the
ascending node
(Ω)
24.1°
Argument of
perihelion
(ω)
75.087°
Mean anomaly (M) 37.531°
Physical characteristics D
Dimensions 80.0 km
Mass unknown
Density unknown
Surface gravity unknown
Escape velocity unknown
Rotation period 5.054 h
Spectral class M
Absolute magnitude 7.58
Albedo (geometric) 0.258
Mean surface
temperature
unknown
This box: view  talk  edit

250 Bettina is a large Main belt asteroid. It is classified as an M-type asteroid.

It was discovered by Johann Palisa on September 3, 1885 in Vienna. It was named in honour of Baroness Bettina von Rothschild, the wife of the prominent Viennese banker Albert Salomon von Rothschild who had bought the naming rights for £50[1].


[edit] References

  1. ^ The Guinness Book of Astronomy Facts and Feats Patrick Moore page 96 ISBN 0-900424-76-1


Minor planets
Previous minor planet 250 Bettina Next minor planet
List of asteroids