(71) Niobe
Asteroid (71) Niobe |
|
---|---|
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 |