59 Elpis
Encyclopedia : 5 : 59 : 59E : 59 Elpis
| Elpidian orbital characteristics [1] | |
|---|---|
| Orbit type | Main belt |
| Semimajor axis | 2.713 AU |
| Perihelion distance | 2.392 AU |
| Aphelion distance | 3.034 AU |
| Orbital period | 4.47 years |
| Inclination | 8.64° |
| Eccentricity | 0.118 |
| Elpidian physical characteristics [1] | |
| Diameter | 164.8 km |
| Rotation period [3] | 13.69 hours |
| Spectral class | C |
| Abs. magnitude | 7.93 |
| Albedo [4] | 0.044 |
| History [2] | |
| Discoverer | J. Chacornac, 1860 |
59 Elpis (el'-pis) is a very large main belt asteroid. Being a C-type asteroid it is very dark and carbonaceous.
Elpis was discovered by J. Chacornac on September 12, 1860. It was his sixth and final asteroid discovery. It is named after Elpis, a personification of hope in Greek mythology.
Aspects
| Stationary, then retrograde | Opposition | Minimum distance (AU) | Maximum brightness (mag) | Stationary, than prograde | Conjunction to sun | |
|---|---|---|---|---|---|---|
| 7. December 2004 | 26. January 2005 | 1,78712 AU | 11,7 mag | 14. March 2005 | 14. September 2005 | |
| 1. March 2006 | 19. April 2006 | 2,03223 AU | 12,2 mag | 13. June 2006 | 3. December 2006 | |
| 5. June 2007 | 24. July 2007 | 1,61213 AU | 11,4 mag | 8. September 2007 | 24. March 2008 | |
| 22. October 2008 | 6. December 2008 | 1,53052 AU | 11,3 mag | 21. January 2009 | 3. August 2009 | |
| 23. January 2010 | 14. March 2010 | 1,99587 AU | 11,9 mag | 4. May 2010 | 26. October 2010 | |
| 15. April 2011 | 4. June 2011 | 1,88041 AU | 12,0 mag | 28. July 2011 | 24. January 2012 | |
| 22. August 2012 | 3. October 2012 | 1,39483 AU | 10,8 mag | 14. November 2012 | 9. June 2013 | |
| 13. December 2013 | 2. February 2014 | 1,82075 AU | 11,8 mag | 21. March 2014 | 19. September 2014 | |
| 7. March 2015 | 25. April 2015 | 2,02460 AU | 12,2 mag | 19. June 2015 | 9. December 2015 | |
| 12. June 2016 | 31. July 2016 | 1,57133 AU | 11,3 mag | 14. September 2016 | 3. April 2017 | |
| 29. October 2017 | 15. December 2017 | 1,56610 AU | 11,4 mag | 30. January 2018 | 9. August 2018 | |
| 29. January 2019 | 19. March 2019 | 2,01038 AU | 11,9 mag | 10. May 2019 | 1. November 2019 | |
| 21. April 2020 | 10. June 2020 | 1,84768 AU | 11,9 mag | 2. August 2020 | 31. January 2021 |
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