 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 6 April 1891 |
| Designations | |
| (309) Fraternitas | |
| Pronunciation | /frəˈtɜːrnɪtæs/ |
Named after | fraternity |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 125.03 yr (45667 d) |
| Aphelion | 2.97127 AU (444.496 Gm) |
| Perihelion | 2.35779 AU (352.720 Gm) |
| 2.66453 AU (398.608 Gm) | |
| Eccentricity | 0.11512 |
| 4.35 yr (1,588.7 d) 4.35yr (1588.7d) | |
| 190.308° | |
| 0° 13m 35.785s / day | |
| Inclination | 3.71999° |
| 356.574° | |
| 310.477° | |
| Physical characteristics | |
| Dimensions | 45.32±3.3 km |
| 22.398 h (0.9333 d) | |
| 0.0595±0.010 | |
| 10.7 | |
309 Fraternitas is a typicalMain beltasteroid.[2] It was discovered byJohann Palisa on 6 April 1891 inVienna. The asteroid name is Latin for 'fraternity'; it was so named in order to commemorate the 25th anniversary of the Maturitätsprüfung Fraternity.[3]
This minor planet is orbiting the Sun at a distance of2.665 AU with anorbital eccentricity (ovalness) of 0.115 and aperiod of 4.35 yr. Theorbital plane is inclined at an angle of 3.72° of theecliptic. Analysis of the asymmetric bimodallight curve of the asteroid fromphotometric data collected during 2014 provide arotation period of22.398±0.001 h with a brightness variation of0.12±0.01 inmagnitude.[4]
_mathilde.jpg) | This article about an asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
