_Genevi%25C3%25A8ve.png) Shape model ofGeneviève from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | G. Reiss |
| Discovery site | Algiers Obs. |
| Discovery date | 2 December 1931 |
| Designations | |
| (1237) Geneviève | |
Named after | Geneviève Reiss (daughter of discoverer)[2] |
| 1931 XB · 1929 GA 1984 MM · A908 HA | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.09 yr (39,846 days) |
| Aphelion | 2.8142AU |
| Perihelion | 2.4107 AU |
| 2.6125 AU | |
| Eccentricity | 0.0772 |
| 4.22yr (1,542 days) | |
| 169.28° | |
| 0° 14m 0.24s / day | |
| Inclination | 9.7349° |
| 57.868° | |
| 305.88° | |
| Physical characteristics | |
| Dimensions | 30.85±6.64 km[6] 37.26±11.83 km[7] 39.74 km(derived)[8] 39.81±1.1 km(IRAS:20)[9] 40.67±0.61 km[10] 42.987±4.138 km[11] |
| 16.37±0.10h[12] 24.82±0.07 h[13] | |
| 0.0413±0.0070[11] 0.0484(derived)[8] 0.057±0.002[10] 0.0585±0.003(IRAS:20)[9] 0.06±0.04[7] 0.07±0.14[6] | |
| S/C[8] B–V = 0.610[1] U–B = 0.250[1] | |
| 10.7[7][9][10] · 10.8[1] · 10.84[6] · 10.91[8][11][12] | |
1237 Geneviève (prov. designation:1931 XB) is abackground asteroid from the central region of theasteroid belt, approximately 38 kilometers (24 miles) in diameter. It was discovered on 2 December 1931, by French astronomerGuy Reiss at the AlgerianAlgiers Observatory in North Africa.[3] The discoverer named it after his daughter Geneviève Reiss.[2]
Geneviève is a non-family asteroid of the main belt'sbackground population when applying thehierarchical clustering method to itsproper orbital elements.[4][5] It orbits the Sun in thecentral main-belt at a distance of 2.4–2.8 AU once every 4 years and 3 months (1,542 days). Its orbit has aneccentricity of 0.08 and aninclination of 10° with respect to theecliptic.[1]
In 1908, it was first identified asA908 HA at Taunton Observatory (803). A few days later,Geneviève was also observed at theU.S. Naval Observatory, which extended the body'sobservation arc by 23 years prior to its official discovery observation at Algiers.[3]
Thisminor planet was named for the eldest daughter of the discoverer, Geneviève Reiss. The discoverer also named1300 Marcelle and1376 Michelle after his other two daughters. The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 114).[2]
In May 1984, American astronomerRichard Binzel obtained a rotationallightcurve ofGeneviève that gave arotation period of 16.37 hours with a brightness variation of 0.23magnitude (U=2).[12] A divergent period of 24.82 hours with an amplitude of 0.07 magnitude was obtained from photometric observations by astronomer Raymond Poncy in April 2005 (U=2-).[13]
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,Geneviève measures between 30.85 and 40.67 kilometers in diameter, and its surface has analbedo between 0.057 and 0.07 (without preliminary results).[9][10][11]
TheCollaborative Asteroid Lightcurve Link (CALL) agrees with the results obtained by IRAS, and derives an albedo of 0.0484 and a diameter of 39.74 kilometers using anabsolute magnitude of 10.91.[8]
