1338 Duponta

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Duponta
1338Dup2-LB1-mag16.jpg
Binary Duponta showing apmag ~16 (JPL Horizons predicted 15.6)
Discovery[1]
Discovered by Boyer, L.
Discovery site Algiers
Discovery date December 4, 1934
Designations
MPC designation 1338
1934 XA
Orbital characteristics[1]
Epoch May 14, 2008
Aphelion 2.5183301
Perihelion 2.0116179
Eccentricity 0.1118583
1245.0685343
199.62778
Inclination 4.81521
325.71508
110.15206
Known satellites 1[2]
Physical characteristics
Dimensions 8 km - 19 km[3]
3.85 hr[1]
12.3[1]

1338 Duponta (1934 XA) is a main-belt asteroid discovered on December 4, 1934 by Boyer, L. at Algiers. Since the albedo of this asteroid is unknown, the size can only be estimated as between about 8 km - 19 km,[3] based on the absolute magnitude (H) of 12.3.[1]

Binary system[edit]

Photometric observations in 2007 revealed a ~3 km satellite (diameter ratio of 0.23) with an orbital period of 17.57 hours.[2] Due to the similar size of the primary and secondary the Minor Planet Center lists this as a binary companion.[4]

References[edit]

  1. ^ a b c d e "JPL Small-Body Database Browser: 1338 Duponta (1934 XA)". 2006-11-21 last obs. Retrieved 2009-10-13. 
  2. ^ a b "Electronic Telegram No. 910". IAU Central Bureau for Astronomical Telegrams. Retrieved 2011-07-03. 
  3. ^ a b "Absolute Magnitude (H)". NASA/JPL Near-Earth Object Program. Archived from the original on 26 October 2009. Retrieved 2009-10-12. 
  4. ^ "Satellites and Companions of Minor Planets". IAU / Central Bureau for Astronomical Telegrams. Retrieved 2011-07-03. 

External links[edit]