(1509) Esclangona and S/2003 (1509) 1
compiled by Wm. Robert Johnston
last updated 2 September 2005
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: |
1.866191 AU
| |
orbital period P: |
2.5494 y (=931.2 d)
| |
eccentricity e: |
0.0322551
| |
perihelion distance q: |
1.8059968 AU
| |
aphelion distance Q: |
1.92638518 AU
| |
inclination i: |
22.32019°
| |
argument of perihelion omega: |
267.88341°
| |
ascending node OMEGA: |
283.60066°
| |
mean anomaly M: |
324.00751°
| |
perihelion passage TP: |
2005-11-19.0983413
| |
Epoch: |
18 AUG 2005
| |
data arc: |
1938-2001 (153 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
(140 km separation) [I8075]
| |
semimajor axis/primary radius a/Rp: |
>=23 [M03e]
| |
orbital period P: |
(20 d?)
| |
eccentricity e: |
?
| |
other data, primary:
|
diameter: |
12 km [M03e]
| |
absolute magnitude H: |
12.64 [JPL]
| |
rotation period: |
2.640 h [H03a]
| |
amplitude delta M: |
0.12 [H03a]
| |
color index U-B: |
0.472 ± 0.052 [SBa]
| |
color index B-V: |
0.894 ± 0.028 [SBa]
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) [a]
| |
geometric albedo: |
0.233 ± 0.038 [IR]
| |
mass: |
?
| |
density: |
?
| |
type: |
S [SBd]
|
other data, secondary:
|
diameter: |
(4 km)
| |
diameter ratio Ds/Dp: |
(0.33)
| |
component magnitude difference: |
2.4 [I8075]
| |
rotation period: |
?
|
|
--(1509) Esclangona--discovery and notes:
Primary discovered 21 December 1938 by A. Patry from Nice, France. Also designated 1938 YG.
Companion discovered 13 February 2003 from the ESO UT4/YEPUN telescope at Cerro Paranal by W. J. Merline, L. M. Close, P. M. Tamblyn, F. Menard, C. R. Chapman, C. Dumas, G. Duvert, W. M. Owen, D. C. Slater, and M. F. Sterzik; announced 18 February 2003.
See more information and links at
Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Warner, Brian D. 2005, Minor Planet Bulletin Asteroid lightcurve analysis at the Palmer Divide Observatory - winter 2004-2005
- Merline, W. J., Close, L. M., Dumas, C., Chapman, C. R., Menard, F.,
Tamblyn, P. M., & Durda, D. D. 2003, AAS/Division for Planetary Sciences Meeting Abstracts Discovery of new asteroid binaries (121) Hermione and (1509) Esclangona
- Merline, W. J., Close, L. M., Tamblyn, P. M., Menard, F., Chapman, C. R., Dumas, C., Duvert, G., Owen, W. M., Slater, D. C., & Sterzik, M. F. 2003, International Astronomical Union Circular S/2003 (1509) 1
- Merline, W. J., Close, L. M., Dumas, C., Chapman, C. R., Menard, F., Tamblyn, P. M., & Durda, D. D. 2003, AAS/Division for Planetary Sciences Meeting Discovery of new asteroid binaries (121) Hermione and (1509) Esclangona
- Patry, A. 1939, Journal des Observateurs Orbites provisions des petites Planètes:1938 YG
© 2003-2004, 2005 by Wm. Robert Johnston.
Last modified 2 September 2005.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.