Moon
A moon of Orcus was found on 22 February 2007.[7]
The satellite was found at 0.25 arcsec from Orcus with magnitude difference of 2.7.[8] Assuming an albedo similar to that of the primary, the magnitude suggests a diameter of about 220 km. It is thought to be a smaller KBO that was captured.
Other websites
- MPEC 2004-D09 announcing the discovery but attributing it to Raymond J. Bambery, Steven H. Pravdo, Michael D. Hicks, Kenneth J. Lawrence, Daniel MacDonald, Eleanor F. Helin and Robert Thicksten / NEAT
- MPEC 2004-D13 correcting MPEC 2004-D09
- Chad Trujillo's page on 2004 DW Archived 2007-03-22 at the Wayback Machine
- First BBC article
- First New Scientist article
- Updated orbital elements from Lowell Observatory Archived 2007-05-22 at the Wayback Machine
- AstDys Archived 2009-02-13 at the Wayback Machine orbital elements
- Orbital simulation from JPL (Java) / Ephemeris
References
- ↑ Buie, Marc W. (2007-12-22). "Orbit Fit and Astrometric record for 90482". SwRI (Space Science Department). Archived from the original on 2012-02-08. Retrieved 2008-09-19.
- ↑ Stansberry, J.; Grundy, W.; Brown, M.; et al. (2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". arXiv:astro-ph/0702538.
{{cite journal}}: Cite journal requires|journal=(help) - ↑ "Overlooked dwarf planet candidates". BBC. 2008-02-19. Retrieved 2008-07-25.
- ↑ Tegler, Stephen C. (2006-01-26). "Kuiper Belt Object Magnitudes and Surface Colors". Archived from the original on 2007-11-16. Retrieved 2006-11-05.
- ↑ "HORIZONS Web-Interface". JPL Solar System Dynamics. Archived from the original on 2012-02-08. Retrieved 2008-07-02.
- ↑ "JPL Small-Body Database Browser: 90482 Orcus (2004 DW)". 2008-02-10. Archived from the original on 2012-02-08. Retrieved 2008-07-02.
- ↑ "(90482) Orcus and Vanth". Archived from the original on 2012-02-08. Retrieved 2009-02-27.
{{cite web}}: CS1 maint: bot: original URL status unknown (link) - ↑ Distant EKO Archived 2007-09-12 at the Wayback Machine The Kuiper Belt Electronic newsletter, March 2007
