(71) Niobe
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Asteroid (71) Niobe |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.755 AU |
| eccentricity | 0.176 |
| Perihelion - aphelion | 2.271 AU - 3.239 AU |
| Inclination of the orbit plane | 23.3 ° |
| Length of the ascending node | 316.1 ° |
| Argument of the periapsis | 267.1 ° |
| Time of passage of the perihelion | May 22, 2011 |
| Sidereal period | 4 a 210 d |
| Mean orbital velocity | 17.8 km / s |
| Physical Properties | |
| Medium diameter | 83 km |
| Albedo | 0.31 |
| Rotation period | 35.8 h |
| Absolute brightness | 7.3 likes |
| Spectral class | S. |
| history | |
| Explorer | KTR Luther |
| Date of discovery | August 13, 1861 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(71) Niobe is an asteroid of the main belt that was discovered on August 13, 1861 by the German astronomer Karl Theodor Robert Luther .
It was named after Niobe , a daughter of Tantalus and Dione .
Aspects
The values are not very precise and are only indicative.
| Stationary, then retrograde | opposition | Opposition distance (AE) | Opposition brightness (mag) | Stationary, then clockwise | Conjunction with the sun |
|---|---|---|---|---|---|
| October 2, 2004 | November 28, 2004 | 2.30546 | 12.1 | January 11, 2005 | July 6, 2005 |
| December 26, 2005 | February 18, 2006 | 1.55055 | 10.5 | April 11, 2006 | November 10, 2006 |
| June 2, 2007 | July 25, 2007 | 1.56069 | 10.6 | September 15, 2007 | March 6, 2008 |
| August 11, 2008 | October 17, 2008 | 2.30755 | 12.1 | November 29, 2008 | May 21, 2009 |
| November 9, 2009 | December 30, 2009 | 2.04579 | 11.6 | February 21, 2010 | August 16, 2010 |
| February 26, 2011 | April 23, 2011 | 1.40423 | 10.4 | May 24, 2011 | January 14, 2012 |
| July 1, 2012 | 3rd September 2012 | 1.92930 | 11.4 | October 24, 2012 | April 7, 2013 |
| 18th September 2013 | 17th November 2013 | 2.34605 | 12.1 | December 30, 2013 | June 24, 2014 |
| December 13, 2014 | 4th February 2015 | 1.66624 | 10.6 | March 31, 2015 | 15th October 2015 |
| 19th May 2016 | July 6, 2016 | 1.47293 | 10.5 | August 24, 2016 | 3rd February 2017 |