_Imprinetta.png) Shape model ofImprinetta from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | H. van Gent |
| Discovery site | Johannesburg Obs. (Leiden Southern Station) |
| Discovery date | 24 April 1930 |
| Designations | |
| (1165) Imprinetta | |
| Pronunciation | /ˌɪmprɪˈnɛtə/ |
Named after | Imprinetta Gent (wife of the discoverer)[2] |
| 1930 HM · A909 TA | |
| main-belt · (outer)[3] Meliboea[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 107.47 yr (39,253 days) |
| Aphelion | 3.7891AU |
| Perihelion | 2.4589 AU |
| 3.1240 AU | |
| Eccentricity | 0.2129 |
| 5.52yr (2,017 days) | |
| 221.92° | |
| 0° 10m 42.6s / day | |
| Inclination | 12.812° |
| 203.79° | |
| 96.959° | |
| Physical characteristics | |
| Dimensions | 47.14±15.99 km[5] 48.65 km(derived)[3] 48.82±1.9 km[6] 50.30±14.80 km[7] 53.187±0.325 km[8] 53.40±1.62 km[9] 56.44±0.87 km[10] 59.378±0.290 km[11] |
| 7.9374±0.0016h[12] 8.107±0.010 h[13] | |
| 0.029±0.005[10] 0.0380±0.0055[11] 0.0392(derived)[3] 0.04±0.02[5] 0.04±0.03[7] 0.047±0.003[9] 0.048±0.002[8] 0.0562±0.005[6] | |
| C[3][14] | |
| 10.30[6][9][11] · 10.69±0.38[14] · 10.70[1][3][5][7][10] | |
1165 Imprinetta, provisional designation1930 HM, is a carbonaceous Meliboeanasteroid from the outer regions of theasteroid belt, approximately 49 kilometers (30 mi) in diameter. It was discovered on 24 April 1930 by Dutch astronomerHendrik van Gent at theUnion Observatory in Johannesburg, South Africa.[15] The asteroid was named after Imprinetta Gent, wife of the discoverer.[2]
Imprinetta is a member of theMeliboea family, a smallerasteroid family of carbonaceous outer-belt asteroids with a few hundred members, named after137 Meliboea.[4][16]: 23
This asteroid orbits the Sun in theouter main-belt at a distance of 2.5–3.8 AU once every 5 years and 6 months (2,017 days). Its orbit has aneccentricity of 0.21 and aninclination of 13° with respect to theecliptic.[1]
The body'sobservation arc begins with its first identification asA909 TA atHeidelberg Observatory in October 1909, more than 20 years prior to its official discovery observation at Johannesburg.[15]
Imprinetta has been characterized as a carbonaceousC-type asteroid byPanSTARRS photometric survey,[3][14] which corresponds with the overallspectral type of the Meliboea family.[16]: 23
In October 2003, a rotationallightcurve ofImprinetta was obtained from photometric observations by American John Menke at his observatory in Barnesville, Maryland. Lightcurve analysis gave a well-definedrotation period of 8.107 hours with a brightness variation of 0.20magnitude (U=3).[13] An alternative observation gave a lightcurve with period of 7.9374 hours and an amplitude of 0.20 magnitude (U=2).[12]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Imprinetta measures between 47.14 and 59.378 kilometers (29.291 and 36.896 mi) in diameter and its surface has analbedo between 0.029 and 0.0562.[5][6][7][8][9][10][11]
TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0392 and a diameter of 48.65 kilometers (30.23 mi) based on anabsolute magnitude of 10.7.[3]
Thisminor planet was named after Imprinetta Gent, wife of the discoverer. The naming was proposed by the discoverer and byGerrit Pels, who computed its orbit. The official naming citation was mentioned inThe Names of the Minor Planets byPaul Herget in 1955 (H 108).[2]
