554 Peraga
Minor planet orbiting the Sun
From Wikipedia, the free encyclopedia
554 Peraga is a minor planet orbiting the Sun that was discovered by German astronomer Paul Götz on January 8, 1905, from Heidelberg.
Discoverydate8 January 1905
PronunciationItalian: [peˈraːɡa]
| Discovery | |
|---|---|
| Discovered by | Paul Götz |
| Discovery site | Heidelberg |
| Discovery date | 8 January 1905 |
| Designations | |
| Pronunciation | Italian: [peˈraːɡa] |
| 1905 PS | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 115.51 yr (42190 d) |
| Aphelion | 2.7391 AU (409.76 Gm) |
| Perihelion | 2.0095 AU (300.62 Gm) |
| 2.3743 AU (355.19 Gm) | |
| Eccentricity | 0.15364 |
| 3.66 yr (1336.3 d) | |
| 215.70° | |
| 0° 16m 9.84s / day | |
| Inclination | 2.9349° |
| 295.434° | |
| 127.356° | |
| Physical characteristics | |
| 47.935±2.05 km[1] 48.23 ± 0.84 km[2] | |
| Mass | (6.59 ± 0.66) × 1017 kg[2] |
Mean density | 1.40 ± 0.15 g/cm3[2] |
| 13.7128 h (0.57137 d) | |
| 0.0496±0.005 | |
| 9.1 | |
13-cm radar observations of this asteroid from the Arecibo Observatory between 1980 and 1985 were used to produce a diameter estimate of 101 km.[3]
_mathilde.jpg){kind=small}