Electronic Telegram No. 4035
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
CBAT Director:  Daniel W. E. Green; Hoffman Lab 209; Harvard University;
 20 Oxford St.; Cambridge, MA  02138; U.S.A.
e-mail:  cbatiau@eps.harvard.edu (alternate cbat@iau.org)
URL http://www.cbat.eps.harvard.edu/index.html
Prepared using the Tamkin Foundation Computer Network


S/2014 (130) 2
     B. Yang, Z. Wahhaj, M. Marsset, J. Milli, and C. Dumas, European Southern
Observatory (ESO); and F. Marchis, Carl Sagan Center of the SETI Institute,
report the discovery of a second satellite around minor planet (130) Elektra.
The already-known binary system (cf. IAUC 8183) was observed twice on Dec. 6
and 9 UT with the SPHERE instrument on the ESO 8-m Very Large Telescope UT3 on
Cerro Paranal.  The K_s-band imaging and the YJH-band (0.97- to 1.66-micron)
IFU spectra show that, on Dec. 6.14, the second companion was at separation
0".38 (projected separation 550 km) in p.a. 260 deg.  On Dec. 9.08, the second
companion was at separation 0".34 in p.a. 90 deg.  The K_s-band (2.2-micron)
peak-to-peak brightness difference is about 7.9 +/- 0.5 mag on Dec. 6 and 8.3
+/- 0.5 mag on Dec. 9.  Elektra is the fifth multiple system discovered and
imaged in the main asteroid belt after (87) Sylvia (cf. IAUC 8582), (45)
Eugenia (cf. IAUC 8817), (216) Kleopatra (cf. IAUC 8980), and (93) Minerva
(cf. IAUC 9069).


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2014 CBAT
2014 December 17                 (CBET 4035)              Daniel W. E. Green