Contents.
asteroid: (130)Elektra
satellites: S/2003(130)1 : 150,
S/2014(130)1 : 120,
S/2014(130)2 : 120
total number: 390
type: position
dates: 2014-2014
observatory: 309 - Cerro Paranal ESO, Chile
Reference.
Berdeu, Anthony; Langlois, Maud; Vachier, Frédéric.
First observation of a quadruple asteroid. Detection of a third moon around (130) Elektra with SPHERE/IFS.
Astronomy & Astrophysics. 2022. Volume 658, id.L4, 21 pp.
2022A&A...658L...4B
Informations.
relative to: the primary
reference frame: astrometric ICRF
centre of frame: topocentric
epoch of equinox: J2000
time scale: UT
reduction: no information
coordinates: X, Y (secondary relative to primary)
diff. refraction: no information
receptor:
telescope: SPHERE + IFS
Comments.
Positions of the satellites S/2003(130)1 and S/2014(130)1 are obtained as a new reduction of the data
earlier published in abin0010. Note, however, that observations made on Dec 6, 2014, were not
processed, so that, for this date, observations from abin0010 should be used in the process of
refining the orbits of these two satellites.
Format.
1. Index of the satellite (N):
1 - S/2003(130)1
2 - S/2014(130)1
3 - S/2014(130)2
2. Julian date of the observation (JD)
3. Relative right ascension (X, mas)
4. Uncertainty of X (sigX, mas)
5. Relative declination (Y, mas)
6. Uncertainty of Y (sigY, mas)
7. Angular separation of the satellite from the primary (s, mas)
8. Uncertainty of s (sigs, mas)
9. The satellite's magnitude relative to the primary (dm)
10. Uncertainty of the satellite's magnitude (sigm)
11. Estimated satellite diameter (D, km)
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N JD X sigX Y sigY s err_s dm sigm D
mas mas mas mas mas mas km
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