13003 Dickbeasley
Background asteroid from the central region of the asteroid belt
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13003 Dickbeasley, provisional designation 1982 FN, is a background asteroid from the central region of the asteroid belt, approximately 6 kilometers in diameter. It was discovered by American astronomer Edward Bowell at Lowell's Anderson Mesa Station on 21 March 1982.[2] The asteroid was named in memory of American NAU administrator Dick Beasley.[2]
| Discovery[1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 21 March 1982 |
| Designations | |
| (13003) Dickbeasley | |
Named after | Dick Beasley (NAU, artist)[2] |
| 1982 FN · 1982 HJ2 | |
| main-belt · (inner)[3] background | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 34.66 yr (12,661 days) |
| Aphelion | 3.0838 AU |
| Perihelion | 2.0332 AU |
| 2.5585 AU | |
| Eccentricity | 0.2053 |
| 4.09 yr (1,495 days) | |
| 227.37° | |
| 0° 14m 26.88s / day | |
| Inclination | 26.560° |
| 177.56° | |
| 33.358° | |
| Physical characteristics | |
| 5.41 km (calculated)[3] 8.240±0.119 km[4][5] | |
| 3.4992±0.0090 h[6] 3.4999±0.0005 h[7] 3.502±0.001 h[8] | |
| 0.074±0.011[4][5] 0.20 (assumed)[3] | |
| S (assumed)[3] | |
| 13.7[1][3][4] · 14.402±0.008 (S)[6] · 14.25±0.89[9] | |
Orbit and classification
Dickbeasley is a non-family asteroid from the main belt's background population. It orbits the Sun in the central main-belt at a distance of 2.0â3.1 AU once every 4 years and 1 month (1,495 days). Its orbit has an eccentricity of 0.21 and an inclination of 27° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation, as no precoveries were taken, and no prior identifications were made.[2]
Naming
This minor planet was named in memory of American Richard "Dick" E. Beasley (1934â1992), a teacher and administrator at Northern Arizona University. He was also a multi-media artist and a preeminent figure in the calligraphic world.[2] The approved naming citation was published by the Minor Planet Center on 9 February 2009 (M.P.C. 65122).[10]
Physical characteristics
Rotation period
In April 2015, a rotational lightcurve of Dickbeasley was obtained from photometric observations made at the Phillips Academy Observatory (I12). It gave a rotation period of 3.502 hours with a brightness variation of 0.44 magnitude (U=3-).[8] One month later, in May 2015, observations at Texas Tech's Preston Gott Observatory gave a concurring period of 3.4999 hours with an amplitude of 0.30 magnitude (U=3-).[7]
These results supersede the first obtained lightcurve at the Palomar Transient Factory from September 2012, which gave a period of 3.4992 hours and an amplitude of 0.42 (U=2).[6]
Diameter and albedo
According to the surveys carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Dickbeasley measures 8.2 kilometers in diameter and its surface has an albedo of 0.07,[4][5] while he Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 5.4 kilometers with an absolute magnitude of 13.7.[3]
