| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 24 May 1931 |
| Designations | |
| (1195) Orangia | |
Named after | Orange Free State Province (in South Africa) |
| 1931 KD · 1948 LB 1972 QA | |
| main-belt · (inner) Flora | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.55 yr (31,248 days) |
| Aphelion | 2.7110 AU |
| Perihelion | 1.8048 AU |
| 2.2579 AU | |
| Eccentricity | 0.2007 |
| 3.39 yr (1,239 days) | |
| 150.46° | |
| 0° 17m 25.8s / day | |
| Inclination | 7.1906° |
| 281.26° | |
| 328.27° | |
| Physical characteristics | |
| Dimensions | 5.90 km (calculated) 6.258±0.604 km |
| 6.167±0.0012 h | |
| 0.237±0.053 0.24 (assumed) | |
| S | |
| 12.864±0.002 (R) · 13.2 · 13.31 · 13.60±0.32 | |
1195 Orangia, provisional designation 1931 KD, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 24 May 1931, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg, South Africa. It was named after the Orange Free State Province.
Orbit and classification
Orangia is a member of the Flora family, one of the largest families of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 5 months (1,239 days). Its orbit has an eccentricity of 0.20 and an inclination of 7° with respect to the ecliptic. The asteroid's observation arc begins at Johannesburg, two weeks after its official discovery observation.
Physical characteristics
Lightcurve
In November 2010, a rotational lightcurve of Orangia was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 6.167 hours with a brightness amplitude of 0.20 magnitude (U=2).
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Orangia measures 6.258 kilometers in diameter and its surface has an albedo of 0.237, while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of the Flora family – and calculates a diameter of 5.90 kilometers using an absolute magnitude of 13.31.
Naming
This minor planet was named in honor of former South African Orange Free State Province that existed from 1910 to 1994. The official naming citation was also mentioned in Paul Herget's The Names of the Minor Planets in 1955 (H 111).
References
- ^ a b c d "JPL Small-Body Database Browser: 1195 Orangia (1931 KD)" (2016-12-11 last obs.). Jet Propulsion Laboratory. Retrieved 15 August 2017.
- ^ a b c d Schmadel, Lutz D. (2007). "(1195) Orangia". Dictionary of Minor Planet Names – (1195) Orangia. Springer Berlin Heidelberg. p. 100. doi:10.1007/978-3-540-29925-7_1196. ISBN 978-3-540-00238-3.
- ^ a b c d e f "LCDB Data for (1195) Orangia". Asteroid Lightcurve Database (LCDB). Retrieved 15 August 2017.
- ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (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 15 August 2017.
- ^ a b c 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 15 August 2017.
- ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 15 August 2017.
- ^ a b "1195 Orangia (1931 KD)". Minor Planet Center. Retrieved 15 August 2017.
External links
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1195 Orangia at AstDyS-2, Asteroids—Dynamic Site
- 1195 Orangia at the JPL Small-Body Database