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
Наблюдения: 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.
Орбитальные параметры
Большая полуось
1.703 AU
Эксцентриситет
0.4746
Перигелий
0.895 AU
Афелий
2.511244 AU
Наклонение
19.43°
Орбитальный период
— yr
Эпоха
2461200.5
Средний аномалия
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.
Физические параметры
Диаметр
1.298 km
Альбедо
0.033
Плотность
— g/cm³
Период вращения
— h
Абсолютная величина
18.52
Качество orbital
RMS
0.48297
Код состояния
0
ID орбиты
—