Discovery [1] | |
---|---|
Discovered by | Indiana University (Indiana Asteroid Program) |
Discovery site | Goethe Link Obs. |
Discovery date | 3 October 1953 |
Designations | |
(1721) Wells | |
Named after | Herman Wells (Indiana University) [2] |
1953 TD3 ·1944 DA 1958 QE ·A905 CG | |
main-belt ·(outer) | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 112.13 yr (40,957 days) |
Aphelion | 3.2969 AU |
Perihelion | 3.0049 AU |
3.1509 AU | |
Eccentricity | 0.0463 |
5.59 yr (2,043 days) | |
101.64° | |
Inclination | 16.107° |
317.29° | |
137.52° | |
Physical characteristics | |
Dimensions | 43.576±0.166 km [3] |
0.045±0.005 [3] | |
10.9 [1] | |
1721 Wells, provisional designation 1953 TD3, is a dark asteroid from the outer region of the asteroid belt, approximately 44 kilometers in diameter.
It was discovered on 3 October 1953, by Indiana University's (IU) Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States. [4] It was named after IU president and chancellor Herman B Wells. [2]
Wells orbits the Sun in the outer main-belt at a distance of 3.0–3.3 AU once every 5 years and 7 months (2,043 days). Its orbit has an eccentricity of 0.05 and an inclination of 16° with respect to the ecliptic. [1]
First identified as A905 CG at Heidelberg in 1905, Well's first used observation was taken at Turku in 1944, extending the asteroid's observation arc by 9 years prior to its official discovery observation. [4]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Wells measures 43.576 kilometers in diameter and its surface has an albedo of 0.045. [3] It has an absolute magnitude of 10.9. [1] As of 2017, Well's spectral type, rotation period and shape remain unknown.
This minor planet was named in honor of Herman B Wells (1902–2000) chancellor and president of IU. During this time, Wells fostered higher education nationally and internationally. [2] The official naming citation was published by the Minor Planet Center on 15 June 1973 ( M.P.C. 3508). [5]