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OverviewAI-generated
747 Winchester is a main-belt asteroid that orbits the Sun. It was discovered by Joel Hastings Metcalf on March 7, 1913, at the Winchester site. The object carries the provisional designations 1913 QZ and A913 EK. It is named after Winchester and is classified as both a P-type and C-type asteroid.
Physically, 747 Winchester has a diameter of 171.71 km and an albedo of 0.0503. Its rotation period is 9.4146 hours, and its absolute magnitude is 8.03. The asteroid’s orbit has a semi-major axis of 2.998962054260736 AU, an eccentricity of 0.3396931102148048, and an inclination of 18.22140855116078 degrees. Its periapsis is 1.980235306632726 AU, while its apoapsis is 4.017688801888745 AU. The longitude of the ascending node is 129.0494239349015 degrees. In the sequence of minor planets, it follows 746 Marlu and is followed by 748 Simeïsa.
Synthesized by Vinony from 35 facts across 4 sources: Wikidata, NASA, Jpl Sbdb, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.
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via NASA APOD
Small body data
747 Winchester (A913 EK)
- Orbit class
- Main-belt Asteroid
- Diameter
- 171.710 km
- Albedo
- 0.050
- Rotation period
- 9.415 h
- Absolute magnitude
- 8.030 H
- Earth MOID
- 1.080 AU
via NASA/JPL Small-Body Database
Key facts
- Discovered by
- Joel Hastings Metcalf
- Discovery site
- Winchester, Massachusetts
- Discovery date
- 7 March 1913
- Pronunciation
- / ˈ w ɪ n tʃ ɪ s t ər /
- Alternative designations
- 1913 QZ
- Adjectives
- Winchestrian / w ɪ n ˈ tʃ ɛ s t r i ə n /
- Observation arc
- 103.11 yr (37662 d)
- Aphelion
- 4.0220 AU (601.68 Gm )
- Perihelion
- 1.9802 AU (296.23 Gm)
- Semi major axis
- 3.0011 AU (448.96 Gm)
- Orbital period sidereal
- 5.20 yr (1899.0 d )
- Mean anomaly
- 59.0474 °
- Mean motion
- 0° 11 22.488 / day
- Inclination
- 18.165°
- Longitude of ascending node
- 130.081°
- Argument of perihelion
- 275.511°
- Mean radius
- 85.855 ± 1.55 km , 85.035 ± 3.35 km
- Mass
- (3.81 ± 2.22) × 10 kg
via Wikipedia infobox
~1 min read
Encyclopedic overview
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).
Excerpted from Wikipedia’s “747 Winchester” article, available under the CC BY-SA 4.0 licence.