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
Observaciones: 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.
Parámetros orbitales
Semieje mayor
1.703 AU
Excentricidad
0.4746
Perihelio
0.895 AU
Afelio
2.511244 AU
Inclinación
19.43°
Periodo orbital
— yr
Época
2461200.5
Anomalía media
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.
Parámetros físicos
Diámetro
1.298 km
Albedo
0.033
Densidad
— g/cm³
Periodo de rotación
— h
Magnitud absoluta
18.52
Calidad orbital
RMS
0.48297
Código de condición
0
ID orbital
—