1726 Hoffmeister
| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 24 July 1933 |
| Designations | |
| MPC designation | (1726) Hoffmeister |
|
Named after
|
Cuno Hoffmeister (German astronomer) |
| 1933 OE · 1955 FC 1955 HX · 1957 WD A924 UA |
|
|
main-belt · (middle) Hoffmeister family |
|
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 91.81 yr (33,532 days) |
| Aphelion | 2.9040 AU |
| Perihelion | 2.6702 AU |
| 2.7871 AU | |
| Eccentricity | 0.0419 |
| 4.65 yr (1,700 days) | |
| 359.80° | |
| 0° 12m 42.48s / day | |
| Inclination | 3.4834° |
| 230.97° | |
| 68.928° | |
| Physical characteristics | |
| Dimensions | 17.35 km (calculated) 22.03±5.39 22.52±0.23 km 24.61±0.52 25.250±0.079 km 25.438±0.118 km 25.67±8.37 |
| 11.7058±0.0056 h | |
|
0.03±0.03 0.0360±0.0066 0.037±0.005 0.042±0.006 0.044±0.002 0.05±0.05 0.057 (assumed) |
|
| SMASS = Cb · C | |
| 12.082±0.002 (R) · 12.10 · 12.26 · 12.2 · 12.3 · 12.53 · 12.54±0.24 | |
1726 Hoffmeister, provisional designation 1933 OE, is a carbonaceous asteroid from the middle region of the asteroid belt, approximately 23 kilometers in diameter.
It was discovered on 24 July 1933, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany, and named after astronomer Cuno Hoffmeister.
Hoffmeister is the namesake and lowest-numbered member of the small and very compact dynamical Hoffmeister family (also see Category:Hoffmeister asteroids), which, based upon its low albedo, was most likely formed from the breakup of a 50–100 kilometer-sized, carbon-rich parent body within the past several hundred million years.
It orbits the Sun in the central main-belt at a distance of 2.7–2.9 AU once every 4 years and 8 months (1,700 days). Its orbit has an eccentricity of 0.04 and an inclination of 3° with respect to the ecliptic. It was first identified as 1924 UA at the Yerkes Observatory in 1924, extending the asteroid's observation arc by 9 years prior to its official discovery observation at Heidelberg.
In the SMASS classification, Hoffmeister is characterized as a Cb-type, a subtype of the carbonaceous C-complex.
According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Hoffmeister measures between 22.03 and 25.67 kilometers in diameter, and its surface has a low albedo between 0.03 and 0.05. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 17.4 kilometers with an absolute magnitude of 12.53.
...
Wikipedia