.png) Lightcurve-based 3D-model ofLucifer | |
| Discovery[1] | |
|---|---|
| Discovered by | E. Roemer |
| Discovery site | NOFS (USNO) |
| Discovery date | 29 October 1964 |
| Designations | |
| (1930) Lucifer | |
| Pronunciation | /ˈljuːsɪfər/LEW-si-fər |
Named after | Lucifer(religion)[2] |
| 1964 UA · 1954 SQ 1954 TC | |
| main-belt · (outer)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.61 yr (22,870 days) |
| Aphelion | 3.3078AU |
| Perihelion | 2.4883 AU |
| 2.8981 AU | |
| Eccentricity | 0.1414 |
| 4.93yr (1,802 days) | |
| 334.70° | |
| 0° 11m 59.28s / day | |
| Inclination | 14.057° |
| 318.53° | |
| 341.37° | |
| Physical characteristics | |
| Dimensions | 26.90 km(derived)[3] 27.00±3.2 km[4] 30.92±0.84 km[5] 34.04±11.55 km[6] 34.437±0.168 km[7] 36.335±0.376 km[8] 39.61±0.50 km[9] |
| 13.0536±0.0005 h[10] 13.054±0.004h[11] 13.056±0.005 h[12] 13.092±0.0808 h[13] | |
| 0.05±0.03[6] 0.050±0.001[9] 0.0584±0.0081[8] 0.067±0.007[7] 0.074±0.011[5] 0.0886(derived)[3] 0.1058±0.030[4] | |
| SMASS = Cgh[1] · C[3] | |
| 10.818±0.002(R)[13] · 10.9[4][8][9] · 11.00[5][6] · 11.1[1][3] · | |
1930 Lucifer, provisional designation1964 UA, is a carbonaceousasteroid from theouter regions of theasteroid belt, approximately 34 kilometers in diameter. It was discovered on 29 October 1964, by American astronomerElizabeth Roemer at theFlagstaff station (NOFS) of theUnited States Naval Observatory (USNO).[14] It is named afterLucifer, the "shining one" or "light-bearer" from the Hebrew Bible.
Lucifer orbits the Sun in theouter main-belt at a distance of 2.5–3.3 AU once every 4 years and 11 months (1,802 days). Its orbit has aneccentricity of 0.14 and aninclination of 14° with respect to theecliptic.[1] It was first identified as1954 SQ atGoethe Link Observatory in 1954, extending the body'sobservation arc by 10 years prior to its official discovery observation at NOFS.[14]
In theSMASS taxonomy,Lucifer is a Cgh-type that belongs to the carbonaceousC-group of asteroids.[1]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite, and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Lucifer measures between 27.00 and 39.61 kilometers in diameter, and its surface has analbedo between 0.05 and 0.1058.[4][5][6][7][8][9] TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0886 and calculates a diameter of 26.90 kilometers based on anabsolute magnitude of 11.1.[3]
In October 2003, a rotationallightcurve ofLucifer was obtained from photometric observations by American astronomerBrian Warner at his Palmer Divide Observatory in Colorado. Lightcurve analysis gave a well-definedrotation period of 13.056 hours with a brightness amplitude of 0.44magnitude (U=3).[12]
In January 2005, observations by astronomer Horacio Correia gave a concurring period of 13.054 hours and an amplitude of 0.22 magnitude (U=3).[11] In 2013, another lightcurve was obtained at thePalomar Transient Factory (U=2),[13] and a modeled lightcurve from various data sources, including the AstDyS database, gave another concurring period of 13.0536 hours and found apole of (32.0°,17.0°).[10]
Lutz D. Schmadel'sDictionary of Minor Planet Names reads "Named for the proud, rebellious archangel, identified with Satan, who was expelled from heaven".[2] The officialnaming citation was published by theMinor Planet Center on 1 August 1978 (M.P.C. 4419).[15]
