Discovery | |
---|---|
Discovered bi | Annibale de Gasparis |
Discovery date | 11 Mey 1850 |
Designations | |
Pronunciation | /pɑːrˈθɛnəpiː/ par-THEN-ə-pee |
Alternative names | none |
Minor planet category | Main belt |
Adjectives | Parthenopean /ˌpɑːrθᵻnəˈpiːən/, Parthenopian /pɑːrθᵻˈnoʊpiən/[1] |
Orbital chairactereestics[2] | |
Epoch 14 July, 2004 (JD 2453200.5) | |
Aphelion | 403.494 Gm (2.697 AU) |
Perihelion | 330.297 Gm (2.208 AU) |
366.896 Gm (2.453 AU) | |
Eccentricity | 0.100 |
Orbital period | 1402.891 d (3.84 a) |
Average orbital speed | 19.02 km/s |
Mean anomaly | 333.562° |
Inclination | 4.624° |
Longitude o ascendin node | 125.637° |
Argument o perihelion | 195.436° |
Pheesical chairacteristics | |
Dimensions | 153.3 ± 3.1 km (IRAS)[2] |
Mass | 6.15×1018 kg[3] |
Mean density | 3.28 ± 0.20 g/cm³[3] |
Surface gravity | 0.0578 m/s² |
Escape velocity | 0.0941 km/s |
13.7204[2] h | |
Albedo | 0.180 (geometric) [2] |
Temperatur | ~174 K |
Spectral teep | S-type asteroid[2] |
Apparent magnitude | 8.68[4] to 12.16 |
6.55[2] | |
Angular diameter | 0.178" to 0.057" |
11 Parthenope[5] is a lairge, bricht main-belt asteroid.