493 Griseldis
Main-belt asteroid
493 Griseldis is a fairly dark main-belt asteroid 46 km in diameter.[1]
Overview
Griseldis is suspected of having been impacted by another asteroid in March 2015.[2][3] Other asteroids suspected of an asteroid-on-asteroid impact include 354P/LINEAR and 596 Scheila which also showed extended features (tails).
The asteroid was observed with the Subaru Telescope (8m), the Magellan Telescopes (6.5), and also the University of Hawaii 2.2 m telescope in early 2015.[4] The activity was detected on the Subaru in late March, and confirmed on the Magellan telescope a few days later (which is in Chile), but no activity was seen by April.[4] Also, no activity was seen in archived images from 2010 or 2012 according to a University of Hawaii press release.[4]
See also
- 354P/LINEAR
- 596 Scheila
- P/2016 G1 (PanSTARRS)
References
- ^ a b c d e f "JPL Small-Body Database Browser: 493 Griseldis (1902 JS)". Jet Propulsion Laboratory. Retrieved 9 May 2016.
- ^ a b Tholen, David J.; Sheppard, Scott S.; Trujillo, Chad A. (2015). "Evidence for an Impact Event on (493) Griseldis". American Astronomical Society: 414.03. Bibcode:2015DPS....4741403T.
- ^ "Main-belt asteroid shows evidence of march collision". Phys.org. 12 November 2015. Retrieved 13 November 2015.
- ^ a b c Main-Belt Asteroid Shows Evidence of March Collision
External links
- 493 Griseldis at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
- 493 Griseldis at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
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- 492 Gismonda
- 493 Griseldis
- 494 Virtus
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