Mars trojan
Mars Trojans are asteroids that run on the orbit of the planet Mars , but they lead by 60 ° at the Lagrange point L 4 or follow them at the Lagrange point L 5 . An asteroid orbit is stable only at these two points in the orbit. Like hundreds of small bodies on the orbit of Jupiter and Neptune, they are called Trojans . The first Mars Trojan was discovered in 1990 (5261), Eureka .
In July 2017, the Minor Planet Center listed five Mars Trojans, one leading and four following. Of another four, the orbit is not yet sufficiently secured for permanent numbering . It is believed that (311999) 2007 NS 2 , (385250) 2001 DH 47 , 2011 SC 191 , 2011 UN 63 , 2011 SL 25 and 2011 UB 256 could belong to a family around Eureka .
Mars trojan | ||
---|---|---|
Surname | Lagrange point | Discovered on |
(5261) Eureka | L 5 | June 20, 1990 |
(101429) 1998 VF 31 | L 5 | November 13, 1998 |
(121514) 1999 UJ 7 | L 4 | October 30, 1999 |
(311999) 2007 NS 2 | L 5 | July 14, 2007 |
(385250) 2001 DH 47 | L 5 | February 20, 2001 |
Candidates | ||
2011 SL 25 | L 5 | |
2011 SC 191 | L 5 | |
2011 UN 63 | L 5 | |
2011 UB 256 | L 5 |
See also
Individual evidence
- ↑ List Of Martian Trojans. Minor Planet Center , accessed July 27, 2017 .
- ^ Matija Ćuk, Apostolos A. Christou, Douglas P. Hamilton: Yarkovsky-Driven Spreading of the Eureka Family of Mars Trojans. arxiv : 1412.1776 .