| Discovery | |
|---|---|
| Discovered by | Paul Götz |
| Discovery site | Heidelberg |
| Discovery date | 8 January 1905 |
| Designations | |
| (554) Peraga | |
| 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 | |
Mean radius | 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 | |
Peraga (minor planet designation: 554 Peraga) is a minor planet orbiting the Sun that was discovered by German astronomer Paul Götz on January 8, 1905, from Heidelberg.
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]
References
- 1 2 Yeomans, Donald K., "554 Peraga", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 7 May 2016.
- 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ↑ Ostro, S. J.; et al. (August 1985), "Mainbelt asteroids - Dual-polarization radar observations", Science, vol. 229, no. 4712, pp. 442–446, Bibcode:1985Sci...229..442O, doi:10.1126/science.229.4712.442, PMID 17738665.
External links
- Lightcurve plot of 554 Peraga, Palmer Divide Observatory, B. D. Warner (2006)
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 554 Peraga at AstDyS-2, Asteroids—Dynamic Site
- 554 Peraga at the JPL Small-Body Database
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