(2100) Ra Shalom
Asteroid (2100) Ra Shalom |
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Properties of the orbit ( animation ) | |
Orbit type | near-Earth asteroid , Aten-type |
Major semi-axis | 0.832 AU |
eccentricity | 0.437 |
Perihelion - aphelion | 0.469 AU - 1.195 AU |
Inclination of the orbit plane | 15.76 ° |
Length of the ascending node | 170.86 ° |
Argument of the periapsis | 356.02 ° |
Time of passage of the perihelion | Template: FormatDate : Not a valid ISO date! |
Sidereal period | 277 d |
Mean orbital velocity | 32.65 km / s |
Physical Properties | |
Medium diameter | ~ 1.7 km |
Albedo | 0.13 ± 0.03 |
Rotation period | 19.8 |
Absolute brightness | 16.1 mag |
Spectral class | C. |
history | |
Explorer | Eleanor Helin |
Date of discovery | September 10, 1978 |
Another name | 1975 TB, 1978 RA |
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. |
(2100) Ra-Shalom is an asteroid from Aten type . This describes a group of asteroids whose orbits mostly run within the earth's orbit and cross it from within.
Ra-Shalom was discovered by Eleanor Helin at the Palomar Observatory in 1978 . The name is made up of the Egyptian sun god Ra and the Hebrew word for peace; he recalls the Camp David Agreement between Egypt and Israel .
Ra-Shalom moves on an eccentric orbit between 0.47 AU ( perihelion ) and 1.20 AU ( aphelion ) in 277 days around the sun . The orbital eccentricity is 0.44, the orbit is inclined 15.76 ° to the ecliptic .
Its size is estimated at 0.9 to 2.5 km. The albedo is 0.1. The asteroid rotates around its own axis in around 20 hours.