(130) Elektra and S/2003 (130) 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: |
3.11918144818436 AU
| |
orbital period P: |
5.509 y (=2012.2 d)
| |
eccentricity e: |
0.212329001771479
| |
perihelion distance q: |
2.45688876494726 AU
| |
aphelion distance Q: |
3.78147413 AU
| |
inclination i: |
22.8816423987429°
| |
argument of perihelion omega: |
234.472706150356°
| |
ascending node OMEGA: |
145.799838116783°
| |
mean anomaly M: |
100.676499195667°
| |
perihelion passage TP: |
2003-07-17.2895372
| |
Epoch: |
30 JAN 2005
| |
data arc: |
1893-2005 (569 obs.)
|
orbital data, secondary:
|
semimajor axis a: |
1252 ± 30 km [MAg]
| |
semimajor axis/primary radius a/Rp: |
(13?)
| |
orbital period P: |
3.92 ± 0.03 d [MAg]
| |
eccentricity e: |
0.01 [MAg]
| |
inclination i: |
3° or 46° [MAg]
| |
other data, primary:
|
diameter: |
182.3 ± 11.8 km [IR]
| |
triaxial ratio a/b: |
1.40 [SBb]
| |
absolute magnitude H: |
7.12 [JPL]
| |
rotation period: |
0.2176946 d (=5.22467 h) [SBb]
| |
amplitude delta M: |
0.19 to 0.58 [MPb]
| |
color index U-B: |
0.483 ± 0.031 [SBa]
| |
color index B-V: |
0.753 ± 0.029 [SBa]
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) [a]
| |
geometric albedo: |
0.076 ± 0.011 [IR]
| |
mass: |
1.28x1019 kg [MAg]
| |
density: |
(3.8 ± 0.3) g/cm3 [MAg]
| |
type: |
Ch [JPL]
|
other data, secondary:
|
diameter: |
4 km [I8183]
| |
diameter ratio Ds/Dp: |
(0.04)
| |
component magnitude difference: |
8.5 [I8183]
| |
rotation period: |
?
|
|
--(130) Elektra--discovery and notes:
Primary discovered 17 February 1873 from Clinton, New York, USA by Christian Heinrich Friedrich Peters.
Secondary discovered 15 August 2003 from Mauna Kea, Hawaii, USA by W. J. Merline, P. M. Tamblyn, C. Dumas, L. M. Close, C. R. Chapman, and F. Menard, using the Keck II adaptive optics telescope.
See more information and links at Asteroid/Comet Connection Catchall Catalog page
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System,
EAR-A-I0028-4-SBN0001/SMASSII-V1.0:130ELEKTR01 130 Elektra CCD Spectrum
- Merline, W. J., Tamblyn, P. M., Dumas, C., Close, L. M., Chapman, C. R., & Menard, F. 2003, International Astronomical Union Circular S/2003 (130) 1
- Cloutis, E. A. 1996, Lunar and Planetary Institute Conference Abstracts Constraints on the Organic Component on Asteroid Surfaces
- Danforth, C. W. & Ratcliff, S. J. 1994, Minor Planet Bulletin CCD Photometry of 130 Elektra
- Danforth, Charles 1993, Proceedings of the 1993 Undergraduate Symposium on Research in Astronomy CCD Photometry of 130 Elektra and 895 Helio
- Debehogne, H., Lagerkvist, C.-I., Magnusson, P., & Hahn, G. 1990, NASA STI/Recon Technical Report A Physical studies of asteroids XX - Photoelectric photometry of asteroids
- Cruikshank, Dale P. 1988, NASA Reports of Planetary Astronomy Research in planetary astronomy and operation of the Mauna Kea Observatory
- Cruikshank, D. P. & Brown, R. H. 1987, Science Organic Matter on Asteroid 130 Elektra
- Wolf, M. 1903, Astronomische Nachrichten Planet (130) Elektra
- Villiger, W. 1897, Astronomische Nachrichten Planet (130) Elektra
- Mascari, A. 1893, Astronomische Nachrichten Osservazioni del pianetino (130) Elektra.
- Mascari, A. 1893, Astronomische Nachrichten Osservazioni del pianetino (130) Elektra.
© 2003-2004, 2005 by Wm. Robert Johnston.
Last modified 2 September 2005.
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