Astronomy:554 Peraga
From HandWiki
| 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) |
| |{{{apsis}}}|helion}} | 2.7391 astronomical unit|AU (409.76 Gm) |
| |{{{apsis}}}|helion}} | 2.0095 AU (300.62 Gm) |
| 2.3743 AU (355.19 Gm) | |
| Eccentricity | 0.15364 |
| Orbital period | 3.66 yr (1336.3 d) |
| Mean anomaly | 215.70° |
| Mean motion | 0° 16m 9.84s / day |
| Inclination | 2.9349° |
| Longitude of ascending node | 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] |
| Rotation period | 13.7128 h (0.57137 d) |
| Geometric albedo | 0.0496±0.005 |
| Absolute magnitude (H) | 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
- ↑ 1.0 1.1 Yeomans, Donald K., "554 Peraga", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=554, retrieved 7 May 2016.
- ↑ 2.0 2.1 2.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: pp. 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
- ↑ Ostro, S. J. et al. (August 1985), "Mainbelt asteroids - Dual-polarization radar observations", Science 229 (4712): pp. 442–446, doi:10.1126/science.229.4712.442, PMID 17738665, Bibcode: 1985Sci...229..442O.
External links
- Lightcurve plot of 554 Peraga, Palmer Divide Observatory, B. D. Warner (2006)
- Asteroid Lightcurve Database (LCDB), query form (info )
- 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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