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Asteroids with Satellites Database--Johnston's Archive
(1338) Duponta
compiled by Wm. Robert Johnston
last updated21 September 2014--Orbital and physical data--
(Seethis page for definitions of quantities; source codes in brackets, seethis link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:main belt asteroid
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 2.263503125 AU | | orbital periodP: | 3.405491886 yr
(= 1243.8559110 d) | | eccentricitye: | 0.112432410 | | perihelion distanceq: | 2.009012013 AU | | aphelion distanceQ: | 2.517994237 AU | | inclinationi: | 4.8186869° | | argument of perihelionω: | 110.407717° | | ascending nodeΩ: | 325.644252° | | mean anomalyM: | 115.880178° | | perihelion passageTP: | 2013 Apr 17.6159 | | Epoch: | 2014 May 23 | | data arc: | 1934-2014(1365 obs.) | | Earth MOID: | 1.02946 AU | | Jupiter Tisserand invariantTJ: | 3.605 |
orbital data, secondary: | binary dynamical type: | A [M09a] | | semimajor axisas: | 14 km[*E] | | separation/primary radiusas/rp: | 3.6 [*E] | | separation/Hill radiusas/rH: | 0.012 [*E] | | orbital periodPs: | 0.7321± 0.0004d [G07a] | | eccentricityes: | ? | | normalized ang. mom.αL: | 0.67[M09a] |
| other data, system (combined):| absolute mag.H: | 12.6[MPC] | | slope parameterG: | 0.30 [P09d] | | effective diameterdE: | 7.88± 0.06 km [M11b] | | geometric albedo: | 0.229± 0.027[M11b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 1200 km [*E] |
other data, primary: | diameterdp: | 7.68± 0.06 km [*D] | | rotation periodRPp: | 3.85453± 0.00009h [G07a] | | amplitude in mag., rotationalΔM: | 0.23 [G07a] | | amplitude in mag., mutual eventsΔM: | 0.09 ±0.03 [G07a] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 1.77± 0.15km [*D] | | diameter ratiods/dp: | 0.23± 0.02 [G07a] | | component mag. differenceΔM: | 3.2± 0.2 [*D] | | rotation periodRPs: | ? | |
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--(1338) Duponta --discovery and notes:
Primary discovered1934 Dec 04from Algiers, Algeriaby L. Boyer.Alternate designation(s):1934 XA.Permanent number assigned -.
Named - for Marc Dupont.
Companion discovered2007 Mar 06 by S. Gajdos, L. Kornos, J. Vilagi, A. Galad, P. Pravec, R. Stephens, V. Reddy, R. Dyvig, D. Higgins, J. Oey, and D. Prayusinglightcurve observations from Modra Observatory, Slovakia; Ondrejov Observatory, Czech Republic; Goat Mountain Astronomical Research Station, Yucca Valley, California, USA; University of North Dakota, Grand Forks; Badlands Observatory, Quinn, South Dakota, USA; Canberra, Australia; Leura, New South Wales, Australia; Carbuncle Hill Observatory, Greene, Rhode Island, USA.Announced2007 Mar 27 [G07a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Gajdos, S., Kornos, L., Vilagi, J., Galad, A., Pravec, P., Stephens, R., Reddy, V., Dyvig, R., Higgins, D., Oey, J., & Pray, D. 2007, Central Bureau Electronic Telegrams(1338) Duponta
©2007-2008, 2014by Wm. Robert Johnston.
Last modified21 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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