(1338) Duponta
compiled by Wm. Robert Johnston
last updated 6 May 2007
Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):
orbital data, primary (osculating elements) [JPL]:
|
semimajor axis a: |
2.2636663 AU
| |
orbital period P: |
3.41 y (=1,243.990 d)
| |
eccentricity e: |
0.1125097
| |
perihelion distance q: |
2.0089819 AU
| |
aphelion distance Q: |
2.5183507 AU
| |
inclination i: |
4.81473°
| |
argument of perihelion omega: |
109.95685°
| |
ascending node OMEGA: |
325.75116°
| |
mean anomaly M: |
84.07642°
| |
perihelion passage TP: |
2006-06-23.47
| |
Epoch: |
10 APR 2007
| |
data arc: |
1934-2006 (607 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(~23 km?)
| |
semimajor axis/primary radius a/Rp: |
(~4?)
| |
orbital period P: |
17.57 h [OOf]
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
(~12 km?)
| |
absolute magnitude H: |
12.3 [JPL]
12.39±0.2 [OOf]
| |
rotation period: |
3.85453 ± 0.00009 h [OOf]
| |
amplitude delta M: |
0.23 [OOf]
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
0.3±0.2 [OOf]
| |
geometric albedo: |
(0.09) assumed
| |
mass: |
?
| |
density: |
?
| |
type: |
?
|
other data, secondary:
|
diameter: |
?
| |
diameter ratio Ds/Dp: |
?
| |
component magnitude difference: |
?
| |
rotation period: |
?
|
|
--(1338) Duponta--discovery and notes:
Primary discovered 4 December 1934 by L. Boyer at Algiers. Alternate designation 1934 XA.
Companion reported 27 March 2007 based on light curve observations from 6-26 March 2007 from Ondrejov Observatory, Modra Observatory, GMARS, Badlands Observatory, Hunters Hill Observatory, Leura Observatory, and Carbuncle Hill Observatory.
--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 by Wm. Robert Johnston.
Last modified 6 May 2007.
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