.png) A three-dimensional model o 16 Psyche based on its licht curve. | |
| Discovery | |
|---|---|
| Discovered bi | Annibale de Gasparis |
| Discovery date | Mairch 17, 1852 |
| Designations | |
| Pronunciation | /ˈsaɪkiː/ SY-kee |
Named after | Psychē |
Alternative names | none |
Minor planet category | Main belt |
| Orbital chairactereestics[1] | |
| Epoch October 22, 2004 (JD 2453300.5) | |
| Aphelion | 3.328 AU (497.884 Gm) |
| Perihelion | 2.513 AU (375.958 Gm) |
| 2.921 AU (436.921 Gm) | |
| Eccentricity | 0.140 |
Orbital period | 4.99 a (1823.115 d) |
Average orbital speed | 17.34 km/s |
Mean anomaly | 323.379° |
| Inclination | 3.095° |
Longitude o ascendin node | 150.352° |
Argument o perihelion | 228.047° |
| Pheesical chairacteristics | |
| Dimensions | 240×185×145 km[2] 186 km (Geometric mean) 253.2 ± 4 km (IRAS)[1] |
| Mass | 2.27×1019 kg[2] |
Mean density | 6.49 ± 2.94 g/cm³[2] 3.3 ± 0.7 g/cm³[3] |
Surface gravity | ~0.06 m/s²[citation needit] |
Escape velocity | ~0.13 km/s[citation needit] |
| 0.1748 d (4.196 h)[1][4] | |
| Albedo | 0.120 (geometric)[1] |
| Temperatur | ~160 K max: ~280 K (+7 °C)[citation needit] |
Spectral teep | M[1] |
Apparent magnitude | 9.22 tae 12.19 |
| 5.90[1] | |
.svg){kind=small}
16 Psyche is ane o the ten maist massive main-belt asteroids.
References
[eedit | eedit soorce]- ↑ a b c d e f "JPL Small-Body Database Browser: 16 Psyche". 19 September 2008. Retrieved 4 December 2008.
- ↑ a b c Jim Baer (2011). "Recent Asteroid Mass Determinations". Personal Website. Archived frae the original on 21 October 2013. Retrieved 14 Apryle 2012.
- ↑ Lupishko, D. F. (2006). "On the bulk density and porosity of M-type asteroid 16 Psyche". Solar System Research. 40 (3): 214–218. Bibcode:2006SoSyR..40..214L. doi:10.1134/S0038094606030051.
- ↑ "PDS lightcurve data". Archived frae the original on 9 Apryle 2009. Retrieved 7 November 2014.