Summanus
11885 Summanus is a dark asteroid and large near-Earth object of the Apollo group. It was discovered by astronomers with the Spacewatch programm at Kitt Peak Observatory on 25 September 1990. The object has a rotation period of 7.3 hours and measures approximately 1.3 kilometers in diameter. It was named after Summanus, the Roman deity of nocturnal lightning and thunder.
Apollo
관측 횟수: 397
11885 Summanus is a dark asteroid and large near-Earth object of the Apollo group. It was discovered by astronomers with the Spacewatch programm at Kitt Peak Observatory on 25 September 1990. The object has a rotation period of 7.3 hours and measures approximately 1.3 kilometers in diameter. It was named after Summanus, the Roman deity of nocturnal lightning and thunder.
궤도 파라미터
반장축
1.703 AU
이심률
0.4746
근일점
0.895 AU
원일점
2.511244 AU
궤도 경사
19.43°
공전 주기
— yr
历元
2461200.5
평균 근점각
325.32°
Orbit diagram
The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.
물리적 파라미터
직경
1.298 km
반사율
0.033
밀도
— g/cm³
자전 주기
— h
절대 등급
18.52
궤도 품질
RMS
0.48297
상태 코드
0
궤도 ID
—