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 4 December 1934
Designations
MPC designation 1338
1934 XA
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 81.04 yr (29600 days)
Aphelion 2.5173069 AU (376.58375 Gm)
Perihelion 2.0103327 AU (300.74149 Gm)
2.263820 AU (338.6627 Gm)
Eccentricity 0.1119732
3.41 yr (1244.1 d)
347.30828°
0° 17m 21.703s / day
Inclination 4.818293°
325.63706°
110.44936°
Known satellites 1[2]
Earth MOID 1.02997 AU (154.081 Gm)
Jupiter MOID 2.69091 AU (402.554 Gm)
Jupiter Tisserand parameter 3.605
Physical characteristics
Dimensions 8 km - 19 km[3]
3.85453 h (0.160605 d)[1]
12.6[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 27 April 2016. 
  2. ^ a b "Electronic Telegram". 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]