2623 Zech

From Wikipedia, the free encyclopedia
Jump to: navigation, search
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

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[edit]

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[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 2623 Zech (A919 SA)" (2015-04-17 last obs.). Jet Propulsion Laboratory. Retrieved October 2015. 
  2. ^ a b "Dictionary of Minor Planet Names – (2623) Zech". Springer Berlin Heidelberg. 2007. p. 214. Retrieved October 2015. 
  3. ^ a b c Johnston, Robert. "(2623) Zech". johnstonsarchive.net. Retrieved 28 May 2015. 
  4. ^ Pray, D., et al., 2014, (2623) Zech, CBET 4012.

External links[edit]