250 Bettina

Minor Planet | name=250 Bettina
discoverer=Johann Palisa
discovery_date=September 3, 1885
designations="n/a"
category=Main belt
epoch=30 January, 2005 (JD 2453400.5)
semimajor=471.291 Gm (3.15 AU)
perihelion=412.522 Gm (2.758 AU)
aphelion=530.06 Gm (3.543 AU)
eccentricity=0.125
period=2042.375 d (5.59 a)
inclination=12.844°
asc_node=24.1°
arg_peri=75.087°
mean_anomaly=37.531°
speed=16.78 km/s
dimensions=80.0 km
mass="unknown"
density="unknown"
gravity="unknown"
escape_velocity="unknown"
rotation=5.054 h
spectral_class=M
abs_mag=7.58
albedo=0.258
temperature="unknown"

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

References

* [ftp://ftp.lowell.edu/pub/elgb/astorb.html The Asteroid Orbital Elements Database]
* [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html Minor Planet Discovery Circumstances]
* [http://spiff.rit.edu/richmond/parallax/phot/LCSUMPUB.TXT Asteroid Lightcurve Data File]