1338 Duponta

Duponta

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
Alternate name(s)	1934 XA
Orbital characteristics[1]
Epoch May 14, 2008
Ap	2.5183301
Peri	2.0116179
Eccentricity	0.1118583
Orbital period	1245.0685343
Mean anomaly	199.62778
Inclination	4.81521
Longitude of ascending node	325.71508
Argument of peri	110.15206
Satellites	1[2]
Proper orbital elements
Physical characteristics
Dimensions	8 km - 19 km[3]
Absolute magnitude (H)	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

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

1. ^ ^{a b c d} "JPL Small-Body Database Browser: 1338 Duponta (1934 XA)". 2006-11-21 last obs. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1338. Retrieved 2009-10-13. 
2. ^ ^{a b} "Electronic Telegram No. 910". IAU Central Bureau for Astronomical Telegrams. http://www.cbat.eps.harvard.edu/cbet/000900/CBET000910.txt. Retrieved 2011-07-03. 
3. ^ ^{a b} "Absolute Magnitude (H)". NASA/JPL Near-Earth Object Program. http://neo.jpl.nasa.gov/glossary/h.html. Retrieved 2009-10-12. 
4. ^ "Satellites and Companions of Minor Planets". IAU / Central Bureau for Astronomical Telegrams. http://www.cbat.eps.harvard.edu/minorsats.html. Retrieved 2011-07-03. 

External links

• Orbital simulation from JPL (Java) / Ephemeris