MPEC 2020-T164 :
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M.P.E.C. 2020-T164 Issued 2020 October 15, 20:11 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
(3548) Eurybates I = Queta
(3548) Eurybates I = Queta
K.S. Noll, NASA Goddard Space Flight Center; M.E. Brown, Caltech;
H. F. Levison, C. Olkin, M.W. Buie, J.R. Spencer, S. Marchi, S.B. Porter,
Southwest Research Institute; T. Statler, NASA Headquarters; W.M. Grundy,
Lowell Observatory; and H.A. Weaver, Johns Hopkins Applied Physics Lab
report the orbit of a satellite of the Trojan asteroid (3548) Eurybates
(M.P.E.C. 2020-A113).
The satellite has been detected with the Hubble Space Telescope’s Wide
Field Camera 3 (WFC3) at five separate epochs: 09:45(UT) 12 Sep 2018, 09:26(UT)
14 Sep 2018, 07:31(UT) 03 Jan 2020, 20:40 (UT) 19 Jul 2020 and 19:08 (UT)
12 Oct 2020. The satellite was not detected on 11 and 21 Dec 2019, 03 Aug 2020
and 19 Sep 2020 when it is assumed to have been less than 0.4 arcsec from
Eurybates where it cannot be detected owing to scattered light from the
primary. All combined astrometric data yield a consistent orbit with
P = 82.6+/-0.4 days, a = 2310+/-100 km, and e = 0.05+/-0.05.
The name approved for this satellite follows the revised convention for naming
Trojans adopted at the XXXth IAU General Assembly. In recognition of the fact
that there are now far more known Trojan asteroids than available names of
Greek and Trojan warriors, Trojans with H > 12 can be named for Olympic
athletes. The satellite has H~18.25. The names of satellites should be related
to the primary and this relationship is noted in the citation:
(3548) Eurybates I = Queta
Norma Enriqueta “Queta” Basilio Sotelo (1948-2019) was an Olympic athlete who
was the first woman to light the Olympic Cauldron, at the 19th Summer Olympics
in Mexico City on October 12, 1968. She was the mother of three children,
served in the Legislature, and became a permanent member of the Mexico Olympic
Committee. As a torchbearer, Queta Basilio reenacted the role of heralds like
Eurybates.
MPC Staff, on behalf of IAU WGSBN (C) Copyright 2020 MPC M.P.E.C. 2020-T164
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