2623 Zech
| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 22 September 1919 |
| Designations | |
| MPC designation | 2623 Zech (A919 SA) |
|
Named after
|
Gert Zech[2] |
| A919 SA · 1963 RE | |
| main-belt | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 95.57 yr (34,906 days) |
| Aphelion | 2.7834 AU |
| Perihelion | 1.7274 AU |
| 2.2554 AU | |
| Eccentricity | 0.2340 |
| 3.39 yr (1237.2 days) | |
| 91.654° | |
| Inclination | 4.0569° |
| 349.13° | |
| 22.640° | |
| Earth MOID | 0.7283 AU |
| Physical characteristics | |
| Dimensions | 8 km?[3] |
| 2.7401 h | |
| 13.2 mag | |
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2623 Zech (A919 SA) is a main-belt binary asteroid[3] discovered by Karl Reinmuth at Heidelberg Observatory on 22 September 1919.[1]
Named in honor of Gert Zech, astronomer at the Astronomisches Rechen-Institut and editor of Astronomy and Astrophysics Abstracts who has also worked on the determination of the mass of the earth and the astronomical unit from observations of 433 Eros.[2]
Satellite
A satellite was announced orbiting the asteroid in November 2014 from lightcurve observations of the asteroid.[3] The satellite has an orbital period of 117.2 ± 0.3 hours.[4] On 2002-Jun-08 Zech passed 0.036 AU (5,400,000 km; 3,300,000 mi) from the major asteroid 3 Juno.[1]
References
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