Astronomy:1924 Horus
| Discovery[1] | |
|---|---|
| Discovered by | C. J. van Houten I. van Houten G. T. Gehrels |
| Discovery site | Palomar Obs. |
| Discovery date | 24 September 1960 |
| Designations | |
| (1924) Horus | |
| Pronunciation | /ˈhɔːrəs/[3] |
| Named after | Horus (Egyptian mythology)[2] |
| 4023 P-L · 1951 BD 1969 BA | |
| Minor planet category | main-belt |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 56.69 yr (20,707 days) |
| |{{{apsis}}}|helion}} | 2.6465 AU |
| |{{{apsis}}}|helion}} | 2.0331 AU |
| 2.3398 AU | |
| Eccentricity | 0.1311 |
| Orbital period | 3.58 yr (1,307 days) |
| Mean anomaly | 203.62° |
| Mean motion | 0° 16m 31.44s / day |
| Inclination | 2.7294° |
| Longitude of ascending node | 350.27° |
| |{{{apsis}}}|helion}} | 2022-Oct-26 |
| 152.36° | |
| Physical characteristics | |
| Dimensions | 12.3 km 12.986±0.135[4] |
| Rotation period | 6.183±0.006[5][6] |
| Geometric albedo | 0.070±0.004[4] 0.0888 ± 0.011 |
| Absolute magnitude (H) | 13.5 |
1924 Horus, provisional designation 4023 P-L, is a dark asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. Discovered during the Palomar–Leiden survey in 1960, it was later named after Horus from Egyptian mythology.[2][7]
Orbit and classification
Horus was discovered on 24 September 1960, by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld at Leiden, on photographic plates taken by Tom Gehrels at Palomar. On the same date, the trio of astronomers also discovered 1912 Anubis, 1923 Osiris and 5011 Ptah.[7]
Physical characteristics
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Horus measures 12.986 kilometers in diameter and its surface has an albedo of 0.070.[4] The body has a rotation period of 6.183 hours.[5][6]
Naming
This minor planet was named after Horus, the falcon-headed king of the sky and the stars, and son of the Egyptian god Osiris.[2] The official naming citation was published by the Minor Planet Center on 1 November 1979 (M.P.C. 5013).[8]
References
- ↑ 1.0 1.1 "JPL Small-Body Database Browser: 1924 Horus (4023 P-L)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=Horus.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1924) Horus". Dictionary of Minor Planet Names – (1924) Horus. Springer Berlin Heidelberg. p. 154. doi:10.1007/978-3-540-29925-7_1925. ISBN 978-3-540-00238-3.
- ↑ Horus (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Horus (Subscription or UK public library membership required.)
- ↑ 4.0 4.1 4.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 14 June 2017.
- ↑ 5.0 5.1 "LCDB Data for (1924) Horus". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1924%7CHorus.
- ↑ 6.0 6.1 Behrend, Raoul. "Asteroids and comets rotation curves – (1924) Horus". Geneva Observatory. http://obswww.unige.ch/~behrend/page4cou.html#001924.
- ↑ 7.0 7.1 "1924 Horus (4023 P-L)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1924.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
<ref> tag with name "MPC-discoverers" defined in <references> is not used in prior text.External links
- Asteroid Lightcurve Database (LCDB), query form (info )
- 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
- 1924 Horus at AstDyS-2, Asteroids—Dynamic Site
- 1924 Horus at the JPL Small-Body Database
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