1827 Atkinson, provisional designation 1962 RK, is a background asteroid from the central regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 7 September 1962, by IU's Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States.[4] The asteroid was named after British astronomer Robert d'Escourt Atkinson.[2]
Discovery[1] | |
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Discovered by | Indiana University (Indiana Asteroid Program) |
Discovery site | Goethe Link Obs. |
Discovery date | 7 September 1962 |
Designations | |
MPC designation | (1827) Atkinson |
Named after | Robert d'Escourt Atkinson (British astronomer)[2] |
Alternative designations | 1962 RK · 1931 VC 1955 FL · 1967 TL 1973 EQ |
Minor planet category | main-belt · (middle) |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 85.41 yr (31,196 days) |
Aphelion | 3.1907 AU |
Perihelion | 2.2291 AU |
Semi-major axis | 2.7099 AU |
Eccentricity | 0.1774 |
Orbital period (sidereal) | 4.46 yr (1,629 days) |
Mean anomaly | 43.640° |
Mean motion | 0° 13m 15.24s / day |
Inclination | 4.5222° |
Longitude of ascending node | 220.56° |
Argument of perihelion | 239.58° |
Physical characteristics | |
Dimensions | 8.855±0.301 km[3] |
Geometric albedo | 0.249±0.052[3] |
Spectral type | Tholen = DU[1] B–V = 0.807[1] |
Absolute magnitude (H) | 12.39[1] |
Atkinson is not a member of any known asteroid family.[5] It orbits the Sun in the central main-belt at a distance of 2.2–3.2 AU once every 4 years and 6 months (1,629 days). Its orbit has an eccentricity of 0.18 and an inclination of 5° with respect to the ecliptic.[1]
The body's observation arc begins with its first identification as 1931 VC at Uccle Observatory in November 1931, almost 31 years prior to its official discovery observation at Goethe Link.[4]
In the Tholen classification, Atkinson is similar to a dark D-type asteroid, though with an unusual spectrum (DU).[1] This strongly disagrees with the albedo obtained by the Wide-field Infrared Survey Explorer (WISE), which indicates that is rather a stony S-type asteroid.[3]
As of 2017, no rotational lightcurve of Atkinson has been obtained from photometric observations. The asteroid's rotation period, shape and poles remain unknown.[1][5]
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Atkinson measures 8.855 kilometers in diameter and its surface has an albedo of 0.249.[3]
This minor planet was named after British astronomer, physicist and inventor, Robert d'Escourt Atkinson (1898–1982), noted for his contributions to fundamental astronomy. Atkinson pioneered in studying nuclear energy-generation in the Sun and stars.[2] The official naming citation was published by the Minor Planet Center on 15 October 1977 (M.P.C. 4236).[6]
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