 1132 Hollandia | |
| Discovery[1] | |
|---|---|
| Discovered by | H. van Gent |
| Discovery site | Johannesburg Obs. (Leiden Southern Station) |
| Discovery date | 13 September 1929 |
| Designations | |
| (1132) Hollandia | |
| Pronunciation | /hɒˈlændiə/ |
Named after | Holland(part of TheNetherlands)[2] |
| 1929 RB1 · 1942 NC 1946 JA · 1951 WA | |
| main-belt · (middle)[3] | |
| Orbital characteristics[1] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.74 yr (31,680 days) |
| Aphelion | 3.4238AU |
| Perihelion | 1.9498 AU |
| 2.6868 AU | |
| Eccentricity | 0.2743 |
| 4.40yr (1,609 days) | |
| 335.62° | |
| 0° 13m 25.68s / day | |
| Inclination | 7.2217° |
| 29.624° | |
| 270.51° | |
| Physical characteristics | |
| Dimensions | 20.48±5.58 km[4] 25.32 km(calculated)[3] 27.235±0.116 km[5] 27.36±0.66 km[6] 27.59±0.78 km[7] 27.727±0.313 km[8] |
| 5.326±0.015 h[9] 5.360±0.001h[10] 5.568±0.005 h[11] | |
| 0.086±0.013[6] 0.10(assumed)[3] 0.12±0.06[4] 0.1328±0.0221[8] 0.135±0.008[7] | |
| S[3] | |
| 10.60[7][8] · 11.1[1][3][4][6] · 11.12±0.50[12] | |
1132 Hollandia, provisional designation1929 RB1, is a stonyasteroid from the middle region of theasteroid belt, approximately 27 kilometers in diameter. It was discovered on 13 September 1929, by Dutch astronomerHendrik van Gent at Leiden Southern Station, annex to theJohannesburg Observatory in South Africa.[13] It was named for the regionHolland in the Netherlands.[2]
Hollandia is an assumed stonyS-type asteroid. It orbits the Sun at a distance of 1.9–3.4 AU once every 4 years and 5 months (1,609 days). Its orbit has aneccentricity of 0.278 and aninclination of 7° with respect to theecliptic.[1] The body'sobservation arc begins with its official discovery observation as noprecoveries were taken and no prior identifications were made.[13]
Between 2003 and 2014, three rotationallightcurves ofHollandia were obtained from photometric observations taken by French amateur astronomerRené Roy, Jason Sauppe atOakley Observatory and Maurice Clark atTTU's Preston Gott Observatory. Lightcurve analysis gave arotation period between 5.360 and 5.568 hours with a brightness variation of 0.15–0.35magnitude (U=2+/2+/2+).[9][10][11]
According to the surveys carried out by the JapaneseAkari satellite, and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Hollandia measures between 20.48 and 27.727 kilometers in diameter, and its surface has analbedo between 0.086 and 0.135.[4][5][6][7][8] TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.10 – a compromise value that lies in between the albedos forcarbonaceous (0.057) and forstony (0.20) asteroids – and calculates a diameter of 25.32 kilometers using anabsolute magnitude of 11.1.[3]
Thisasteroid was named after the Latin name forThe Netherlands, a region in theEuropean Union.[2] Naming citation was first published byPaul Herget inThe Names of the Minor Planets in 1955 (H 106).[2]
