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Encyclopedia > 198 Ampella
198 Ampella
Orbital characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html)
Orbit type Main belt
Semimajor axis 2.458 AU
Perihelion distance 1.894 AU
Aphelion distance 3.022 AU
Orbital period 3.85 years
Inclination 9.30°
Eccentricity 0.229
Physical characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html)
Diameter 57.2 km
Rotation period 3 (http://www.psi.edu/pds/archive/lc.html) 10.383 hours
Spectral class S
Abs. magnitude 8.33
Albedo 4 (http://dorothy.as.arizona.edu/DSN/IRAS/index_iras.html) 0.252
History 2 (http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html)
Discoverer A. Borrelly, 1879


198 Ampella is a fairly large Main belt asteroid. It is bright in color and composed of silicate rocks and iron-nickel.


It was discovered by Alphonse Borrelly on June 13, 1879.


So far Ampella has been observed occulting a star once, on November 8th, 1991 from New South Wales, Australia.

 This astronomy article is a stub. You can help Wikipedia by expanding it (http://en.wikipedia.org/w/index.php?title=198_Ampella&action=edit).



  Results from FactBites:
 
198 Ampella - Wikipedia, the free encyclopedia (150 words)
198 Ampella is a fairly large Main belt asteroid.
It could also derive from the Ampelose (plural of Ampelos), a variety of hamadryad.
So far Ampella has been observed occulting a star once, on November 8th, 1991 from New South Wales, Australia.
RASNZ Occultation Section - Ampella Occultation Update (623 words)
OCCULTATION BY (198) AMPELLA - 2003 NOV 09
On 2003 Nov 09 UT, the 57 km diameter asteroid (198) Ampella will occult a 11.4 mag star in the constellation Pisces for observers along a path across W Australia passing over Port Hedland then Geraldton.
In the case of an occultation, the combined light of the asteroid and the star will drop by 0.4 mag to 10.5 mag (the magnitude of the asteroid) for at most 9.4 seconds.
  More results at FactBites »


 
 

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