557 Violetta
| Discovery | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg |
| Discovery date | 26 January 1905 |
| Designations | |
| 1905 PY | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 111.25 yr (40634 d) |
| Aphelion | 2.6867 AU (401.92 Gm) |
| Perihelion | 2.1984 AU (328.88 Gm) |
| 2.4425 AU (365.39 Gm) | |
| Eccentricity | 0.099957 |
| 3.82 yr (1394.3 d) | |
| 79.8798° | |
| 0° 15m 29.484s / day | |
| Inclination | 2.4895° |
| 292.818° | |
| 195.130° | |
| Earth MOID | 1.2122 AU (181.34 Gm) |
| Jupiter MOID | 2.35942 AU (352.964 Gm) |
| Jupiter Tisserand parameter | 3.492 |
| Physical characteristics | |
| 5.0887 h (0.21203 d)[1][2] | |
| 12.1 | |
|
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557 Violetta is a minor planet orbiting the Sun that was discovered by German astronomer Max Wolf on January 26, 1905 in Heidelberg.
Photometric observations of this asteroid made during 2008 at the Organ Mesa Observatory in Las Cruces, New Mexico gave a light curve with a period of 5.0887 ± 0.0001 hours and a brightness variation of 0.25 ± 0.03 in magnitude.[2]
References
- 1 2 Yeomans, Donald K., "557 Violetta", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 5 May 2016.
- 1 2 Pilcher, Frederick (September 2008), "Period Determinations for 26 Proserpina, 34 Circe 74 Galatea, 143 Adria, 272 Antonia, 419 Aurelia, and 557 Violetta", The Minor Planet Bulletin 35 (3), pp. 135–138, Bibcode:2008MPBu...35..135P.
External links
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