Asteroids with Satellites Database--Johnston's Archive
(130) Elektra, S/2003 (130) 1, S/2014 (130) 1, and third companion
compiled by Wm. Robert Johnston
last updated
7 November 2021
--Orbital and physical data--
(See this page for definitions of quantities; source codes in brackets, see this 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 axis a: |
3.1266224144 AU
| |
orbital period P: |
5.528678778 yr
(= 2019.3499237 d)
| |
eccentricity e: |
0.209225934
| |
perihelion distance q: |
2.472451919 AU
| |
aphelion distance Q: |
3.7807929096 AU
| |
inclination i: |
22.78180072°
| |
argument of perihelion ω: |
237.588274°
| |
ascending node Ω: |
145.0087347°
| |
mean anomaly M: |
87.7577563°
| |
perihelion passage TP: |
2020 Feb 24.739949
| |
Epoch: |
2021 Jul 01
| |
data arc: |
1893-2021
(3377 obs.)
| |
Earth MOID: |
1.54149 AU
| |
Jupiter Tisserand invariant TJ: |
3.062
|
orbital data, S/2003 (130) 1:
|
binary dynamical type: | L [P07f] | |
semimajor axis as: |
1298
± 0.54 km
[Y16a]
| |
separation/primary radius as/rp: | 13.0 [*D] | |
separation/Hill radius as/rH: | 0.034 [*D] | |
orbital period Ps: |
5.287
± 0.001
d [Y16a]
| |
eccentricity es: |
0.0835
± 0.0096
[Y16a]
| |
inclination is: | 160.21° ± 1.5° [Y16a] | |
ascending node Ωs: | 176.1° ± 5.7° [Y16a] | |
argument of pericenter ωs: | 184.4° ± 14.1° [Y16a] | |
mean anomaly M: | 117.3° ± 11.7° [Y16a] | |
normalized ang. mom. αL: |
0.46
[P07f]
|
orbital data, S/2014 (130) 1:
|
semimajor axis as: |
497.6
± 0.33 km
[Y16a]
| |
separation/primary radius as/rp: | 5.0 [*D] | |
separation/Hill radius as/rH: | 0.013 [*D] | |
orbital period Ps: |
1.256
± 0.003
d [Y16a]
| |
eccentricity es: |
0.157
± 0.036
[Y16a]
| |
inclination is: | 165.3° ± 8.2° [Y16a] | |
ascending node Ωs: | 196.6° ± 9.6° [Y16a] | |
argument of pericenter ωs: | 312.9° ± 11.4° [Y16a] | |
mean anomaly M: | 50.6° ± 12.9° [Y16a] | |
normalized ang. mom. αL: |
?
|
orbital data, third companion:
|
semimajor axis as: |
345
km
[B21i]
| |
separation/primary radius as/rp: | 3.5 [*D] | |
separation/Hill radius as/rH: | 0.009 [*D] | |
orbital period Ps: |
0.7
d [B21i]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
7.21
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
199
± 7
km [H17a]
| |
geometric albedo: |
0.071
± 0.011
[M11b]
| |
color index U-B: |
0.483
[T95a]
| |
color index B-V: |
0.753
[T95a]
| |
taxonomic type: |
Ch (SMASSII) [JPL]
G (Tholen) [JPL]
| |
mass m: |
6.6x1018
± 4x1017
kg [M08c]
| |
density ρ: |
1.6
± 0.13
g/cm3[H17a]
| |
Hill radius rH: |
38000 km [*D]
|
other data, primary:
|
diameter dp: |
199
± 7
km [H17a]
| |
dimensions : | 262 x 205 x 164 km [H17a] | |
axial ratios a/b, b/c: | 1.28, 1.25 [*D] | |
rotation period RPp: |
5.224663
h [H17a]
| |
amplitude in mag., rotational ΔM: |
0.58
[W14e]
| |
pole direction Β, λ: |
-88°
,
71°
[H17a]
|
other data, S/2003 (130) 1:
|
diameter ds: |
6.0
± 1.5
km [Y16a]
| |
diameter ratio ds/dp: |
0.03
± 0.008
[*D]
| |
component mag. difference ΔM: |
7.6
[*D]
| |
rotation period RPs: |
?
| |
|
other data, S/2014 (130) 1:
|
diameter ds: |
2.0
± 1.5
km [Y16a]
| |
diameter ratio ds/dp: |
0.010
± 0.008
[*D]
| |
component mag. difference ΔM: |
10.0
[*D]
| |
rotation period RPs: |
?
| |
|
other data, third companion:
|
diameter ds: |
1.6
km [B21i]
| |
diameter ratio ds/dp: |
0.008 [*D]
| |
component mag. difference ΔM: |
10.52
± 0.5
[B21i]
| |
rotation period RPs: |
?
| |
|
|
--
(130) Elektra, S/2003 (130) 1, S/2014 (130) 1, and third companion
--discovery and notes:
Primary discovered
1873 Feb 17
from
Clinton, New York, USA
by
C. H. F. Peters.
Permanent number assigned 1873.
Named - for the Greek mythological character.
S/2003 (130) 1 discovered 2003 Aug 15 by W. J. Merline, P. M. Tamblyn, C. Dumas, L. M. Close, C. R. Chapman, and F. Menard using adaptive optics telescope observations from W. M. Keck II Telescope, Mauna Kea, Hawaii, USA.
Announced 2003 Aug 17 [M03h]. Provisional designation S/2003 (130) 1.
S/2014 (130) 1 discovered 2014 Dec 06 by B. Yang, Z. Wahhaj, L. Beauvalet, F. Marchis, C. Dumas, M. Marsset, E. L. Nielsen, and F. Vachier using adaptive optics telescope observations from European Southern Observatory, Cerro Paranal, Chile.
Announced 2014 Dec 17 [Y14b]. Provisional designation S/2014 (130) 1. Erroneous designation S/2014 (130) 2 retracted.
Third companion discovered 2014 Dec 09 by A. Berdeu, M. Langlois, and F. Vachier using adaptive optics telescope observations from Very Large Telescope, European Southern Observatory, Cerro Paranal, Chile.
Announced 2021 Nov 06 [B21i].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Ferrero, Andrea 2013, Minor Planet Bulletin Rotational Period of Five Asteroids
- Marchis, F., Vachier, F., Durech, J., Berthier, J., & Hanus, J. 2012, AGU Fall Meeting Abstracts Mutual Orbits, Size, Density, and Interior of Visualized Multiple Asteroids
- Torppa, J., Hentunen, V.-P., Pääkkönen, P., Kehusmaa, P., & Muinonen, K. 2008, Icarus Asteroid shape and spin statistics from convex models
- Marchis, F., Descamps, P., Berthier, J., Hestroffer, D., Vachier, F., Baek, M., Harris, A. W., & Nesvorný, D. 2008, Icarus Main belt binary asteroidal systems with eccentric mutual orbits
- Ďurech, J., Kaasalainen, M., Marciniak, A., Allen, W. H., Behrend, R., Bembrick, C., Bennett, T., Bernasconi, L., Berthier, J., Bolt, G., Boroumand, S., Crespo da Silva, L., Crippa, R., Crow, M., Durkee, R., Dymock, R., Fagas, M., Fauerbach, M., Fauvaud, S., Frey, M., Gonçalves, R., Hirsch, R., Jardine, D., Kamiński, K., Koff, R., Kwiatkowski, T., López, A., Manzini, F., Michałowski, T., Pacheco, R., Pan, M., Pilcher, F., Poncy, R., Pray, D., Pych, W., Roy, R., Santacana, G., Slivan, S., Sposetti, S., Stephens, R., Warner, B., & Wolf, M. 2007, Astronomy and Astrophysics Physical models of ten asteroids from an observers' collaboration network
- Marchis, F., Kaasalainen, M., Hom, E. F. Y., Berthier, J., Enriquez, J., Hestroffer, D., Le Mignant, D., & de Pater, I. 2006, Icarus Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey
- Marchis, Franck, Berthier, Jerome, Descamps, Pascal, & Hestroffer, Daniel 2006, NOAO Proposal Refining the Orbits of Known Main-Belt Binary Asteroids
- Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System 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 Science Conference 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, Asteroids, Comets, Meteors III Physical studies of asteroids XX - Photoelectric photometry of asteroids
- Cruikshank, Dale P. 1988, 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. 1892, Astronomische Nachrichten Osservazioni del pianetino (130) Elektra.
©
2003-2015, 2021
by Wm. Robert Johnston.
Last modified
7 November 2021.
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