| Discovery | |
|---|---|
| Discovered by | Paul Götz |
| Discovery site | Heidelberg |
| Discovery date | 8 January 1905 |
| Designations | |
| MPC designation | (554) Peraga |
| Pronunciation | Italian: [peˈraːɡa] |
| Alternative designations | 1905 PS |
| Orbital characteristics | |
| 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) |
| Semi-major axis | 2.3743 AU (355.19 Gm) |
| Eccentricity | 0.15364 |
| Orbital period (sidereal) | 3.66 yr (1336.3 d) |
| Mean anomaly | 215.70° |
| Mean motion | 0° 16 9.84 / day |
| Inclination | 2.9349° |
| Longitude of ascending node | 295.434° |
| Argument of perihelion | 127.356° |
| Physical characteristics | |
| Mean radius | 47.935±2.05 km 48.23 ± 0.84 km |
| Mass | (6.59 ± 0.66) × 10 kg |
| Mean density | 1.40 ± 0.15 g/cm |
| Synodic rotation period | 13.7128 h (0.57137 d) |
| Geometric albedo | 0.0496±0.005 |
| Absolute magnitude (H) | 9.1 |
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.
References
- ^ Yeomans, Donald K., "554 Peraga", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 7 May 2016.
- ^ 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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