557 Violetta

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557 Violetta
Discovery
Discovered by M. F. Wolf
Discovery site Heidelberg
Discovery date26 January 1905
Designations
(557) Violetta
PronunciationItalian: [vjoˈletta] [1]
1905 PY
Orbital characteristics [2]
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°
Physical characteristics
5.0887  h (0.21203  d) [2] [3]
12.1

    557 Violetta is a minor planet orbiting the Sun that was discovered by German astronomer Max Wolf on 26 January 1905 in Heidelberg. In light of M. F. Wolf's penchant ca. 1905 for naming asteroids after operatic heroines, it is likely that 557 Violetta is named after the protagonist of Giuseppe Verdi's famous opera La Traviata .

    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. [3]

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    References

    1. violetta (Dizionario Rai)
    2. 1 2 Yeomans, Donald K., "557 Violetta", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory , retrieved 5 May 2016.
    3. 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, vol. 35, no. 3, pp. 135–138, Bibcode:2008MPBu...35..135P.