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 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 96.49 yr (35243 days) |
| Aphelion | 2.7845 AU (416.56 Gm) |
| Perihelion | 1.7275 AU (258.43 Gm) |
| 2.2560 AU (337.49 Gm) | |
| Eccentricity | 0.23428 |
| 3.39 yr (1237.7 d) | |
| 149.68° | |
| 0° 17m 27.132s / day | |
| Inclination | 4.0566° |
| 349.13° | |
| 22.746° | |
| Earth MOID | 0.726459 AU (108.6767 Gm) |
| Jupiter MOID | 2.67853 AU (400.702 Gm) |
| Jupiter Tisserand parameter | 3.584 |
| Physical characteristics | |
| Dimensions | 8 km?[3] |
| 2.7401 h (0.11417 d) | |
| 13.3 | |
|
| |
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
- 1 2 3 4 "JPL Small-Body Database Browser: 2623 Zech (A919 SA)" (2015-04-17 last obs.). Jet Propulsion Laboratory. Retrieved 15 April 2016.
- 1 2 "Dictionary of Minor Planet Names – (2623) Zech". Springer Berlin Heidelberg. 2007. p. 214. Retrieved 11 October 2015.
- 1 2 3 Johnston, Robert. "(2623) Zech". johnstonsarchive.net. Retrieved 28 May 2015.
- ↑ Pray, D., et al., 2014, (2623) Zech, CBET 4012.
External links
- "2623 Zech (A919 SA)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 2002623.
- 2623 Zech at the JPL Small-Body Database
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