747 Winchester

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747 Winchester
747Winchester (Lightcurve Inversion).png
A three-dimensional model of 747 Winchester based on its light curve.
Discovery
Discovered by Joel Hastings Metcalf
Discovery site Winchester, Massachusetts
Discovery date March 7, 1913
Designations
1913 QZ
Orbital characteristics
Epoch November 6, 2001 (JDCT 2452219.5)
Aphelion 4.024 AU
Perihelion 1.958 AU
2.991 AU
Eccentricity 0.345
5.173 a
17.15 km/s
116.538°
Inclination 18.179°
130.217°
275.631°
Physical characteristics
Dimensions 170.07 ± 6.70[1] km
Mass (3.81 ± 2.22) × 1018[1] kg
Mean density
1.47 ± 0.87[1] g/cm3

747 Winchester is an asteroid, a minor planet orbiting the Sun. It was discovered in 1913, and is named after the town in which it was discovered, Winchester, Massachusetts, in the USA.

Photometric observations of this asteroid at the Palmer Divide Observatory in Colorado Springs, Colorado in 2007 gave a light curve with a period of 9.4146 ± 0.0002 hours and a brightness variation of 0.16 ± 0.02 in magnitude. This is reasonably consistent with independent results reported in 1983 (9.40h), 1993 (9.402h), and 2007 (9.334h).[2]

References[edit]

  1. ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98-118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009.  See Table 1.
  2. ^ Warner, Brian D. (December 2007), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - March-May 2007", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 34 (4): 104-107, Bibcode:2007MPBu...34..104W. 

External links[edit]