1879 Broederstroom
| Discovery [1] | |
|---|---|
| Discovered by | H. van Gent |
| Discovery site |
Johannesburg Obs. (Leiden Southern Station) |
| Discovery date | 16 October 1935 |
| Designations | |
| MPC designation | 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 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 78.68 yr (28738 days) |
| Aphelion | 2.5790 AU (385.81 Gm) |
| Perihelion | 1.9127 AU (286.14 Gm) |
| 2.2458 AU (335.97 Gm) | |
| Eccentricity | 0.14835 |
| 3.37 yr (1229.3 d) | |
| 270.04° | |
| 0° 17m 34.224s / day | |
| Inclination | 1.7232° |
| 250.00° | |
| 173.92° | |
| Earth MOID | 0.925051 AU (138.3857 Gm) |
| Jupiter MOID | 2.71457 AU (406.094 Gm) |
| Jupiter Tisserand parameter | 3.616 |
| Physical characteristics | |
| Dimensions |
7.66±0.52 km[4] 7.44±0.24 km[5] 7.14 km (calculated)[3] |
|
3.01555 h (0.125648 d)[1][6] 3.0159±0.0115 h[7] 3.020±0.010 h[8] | |
|
0.319±0.048[4] 0.242±0.031[5] 0.24 (assumed)[3] | |
| S [3] | |
| 12.9 | |
|
| |
1879 Broederstroom, provisional designation 1935 UN, is a stony asteroid from the inner regions of the asteroid belt. It was discovered by Dutch astronomer Hendrik van Gent at the Leiden Southern Station, annex to the Johannesburg Observatory in South Africa on 16 October 1935.[9]
The S-type asteroid is a member of the Flora family and measures approximately 7 kilometers in diameter. It orbits the Sun at a distance of 1.9–2.6 AU once every 3 years and 4 months (1,229 days). Its orbit show an eccentricity of 0.15 and is nearly coplaner to the ecliptic, inclined by only 1.7 degrees.[1] It has an albedo of 0.24 and 0.32, as measured by the WISE/NEOWISE and Akari surveys, respectively.[4][5]
Photometric light-curve observations made by Italian amateur astronomer Antonio Vagnozzi[6] and the U.S. Palomar Transient Factory Survey gave a rotation period of 3.02 hours.[7][8]
The asteroid was named after the village Broederstroom located in the North West province of South Africa. The Leiden Southern Observatory was later located near this town for 25 years until 1982.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 1879 Broederstroom (1935 UN)" (2014-06-21 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1879) Broederstroom. Springer Berlin Heidelberg. p. 150. ISBN 978-3-540-29925-7. Retrieved 7 November 2015.
- 1 2 3 4 "LCDB Data for (1879) Broederstroom". Asteroid Lightcurve Database (LCDB). Retrieved 7 November 2015.
- 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 7 November 2015.
- 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794
. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 7 November 2015. - 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1879) Broederstroom". Geneva Observatory. Retrieved 7 November 2015.
- 1 2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 7 November 2015.
- 1 2 Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 219 (2): 19. arXiv:1506.08493. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved 7 November 2015.
- ↑ "1879 Broederstroom (1935 UN)". Minor Planet Center. Retrieved 7 November 2015.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Geneve, Raoul Behrend
- 1879 Broederstroom at the JPL Small-Body Database
