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Occultation Evidence for a Satellite of the Trojan Asteroid (911) Agamemnon | Bradley Timerson
; John Brooks
; Steven Conard
; David W. Dunham
; David Herald
; Alin Tolea
; Franck Marchis
; | Date: |
11 Oct 2013 | Abstract: | On 2012 January 19, observers in the northeastern United States of America
observed an occultation of 8.0-mag HIP 41337 star by the Jupiter-Trojan (911)
Agamemnon, including one video recorded with a 36cm telescope that shows a deep
brief secondary occultation that is likely due to a satellite, of about 5 km
(most likely 3 to 10 km) across, at 278 km $pm$ 5 km (0.0931 arcsec) from the
asteroid’s center as projected in the plane of the sky. A satellite this small
and this close to the asteroid could not be resolved in the available VLT
adaptive optics observations of Agamemnon recorded in 2003. The outline of
Agamemnon is fit well by an ellipse with dimensions 190.6 $pm$ 0.9 km by 143.8
$pm$ 1.5 km. The angular diameter of HIP 41337 was found to be 0.5 $pm$ 0.1
milli-arcsec. After (624) Hektor, this could be the second Jupiter Trojan
asteroid known to possess a small satellite. | Source: | arXiv, 1310.3220 | Services: | Forum | Review | PDF | Favorites |
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