2623 Zech

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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[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 15 April 2016. 
  2. ^ a b "Dictionary of Minor Planet Names – (2623) Zech". Springer Berlin Heidelberg. 2007. p. 214. Retrieved 11 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]