| Discovery[1] | |
|---|---|
| Discovered by | H. van Gent |
| Discovery site | Johannesburg Obs. (Leiden Southern Station) |
| Discovery date | 16 October 1935 |
| Designations | |
| (1879) Broederstroom | |
Named after | Broederstroom(town)[2] |
| 1935 UN · 1950 AD 1950 CV · 1950 DB1 1972 RS1 · 1984 HJ2 | |
| main-belt · Flora[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 81.46 yr (29,752 days) |
| Aphelion | 2.5784AU |
| Perihelion | 1.9131 AU |
| 2.2458 AU | |
| Eccentricity | 0.1481 |
| 3.37yr (1,229 days) | |
| 85.731° | |
| 0° 17m 34.44s / day | |
| Inclination | 1.7234° |
| 249.98° | |
| 173.96° | |
| Physical characteristics | |
| Dimensions | 7.14 km(calculated)[3] 7.444±0.235 km[4] 7.66±0.52 km[5] |
| 3.01555±0.00006h[6] 3.0159±0.0115 h[7] 3.020±0.010 h[8] | |
| 0.24(assumed)[3] 0.242±0.031[4] 0.319±0.048[5] | |
| S[3] | |
| 12.50[5] · 12.766±0.001(R)[7] · 12.780±0.100(R)[8] · 12.80[4] · 12.9[1][3] · 13.45±0.28[9] | |
1879 Broederstroom, provisional designation1935 UN, is a stony Florianasteroid from the inner regions of theasteroid belt, approximately 7 kilometers in diameter. It was discovered on 16 October 1935, by Dutch astronomerHendrik van Gent at theLeiden Southern Station (081), annex to theJohannesburg Observatory in South Africa.[10] The asteroid was named after the South African village ofBroederstroom.[2]
Broederstroom is a member of theFlora family. It orbits the Sun in theinner main-belt at a distance of 1.9–2.6 AU once every 3 years and 4 months (1,229 days). Its orbit has aneccentricity of 0.15 and aninclination of 2° with respect to theecliptic.[1]
Noprecoveries were taken, and no prior identifications were made. The body'sobservation arc begins with its official discovery observation at Johannesburg in 1935.
Broederstroom has been characterized as a common stonyS-type asteroid.[3]
In January 2007, a rotationallightcurve obtained by Italian amateur astronomerAntonio Vagnozzi gave a well-definedrotation period of 3.01555 hours with a brightness variation of 0.11magnitude (U=3).[6] In Spring 2014,photometry at thePalomar Transient Factory in California gave two lightcurves with a period of 3.016 and 3.02 hours and an amplitude of 0.12 magnitude (U=2/2).[7][8]
According to the surveys carried out by the JapaneseAkari satellite and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Broederstroom measures 7.444 and 7.66 kilometers in diameter and its surface has analbedo of 0.242 and 0.319, respectively.[4][5] TheCollaborative Asteroid Lightcurve Link, assumes an albedo of 0.24 – derived from the asteroid8 Flora, the family's principal body and namesake – and calculates a diameter of 7.14 kilometers with anabsolute magnitude of 13.42.[3]
Thisminor planet was named after the villageBroederstroom located in theNorth West province of South Africa. The Leiden Southern Observatory was later located near this town for 25 years until 1982.[2] The official naming citation was published by theMinor Planet Center on 8 April 1982 (M.P.C. 6833).[11]
