Astronomy:3040 Kozai
| Discovery [1] | |
|---|---|
| Discovered by | W. Liller |
| Discovery site | Cerro Tololo Obs. |
| Discovery date | 23 January 1979 |
| Designations | |
| (3040) Kozai | |
| Named after | Yoshihide Kozai (Japanese astronomer)[2] |
| 1979 BA | |
| Minor planet category | Mars-crosser [1][3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 38.36 yr (14,011 days) |
| |{{{apsis}}}|helion}} | 2.2096 AU |
| |{{{apsis}}}|helion}} | 1.4717 AU |
| 1.8406 AU | |
| Eccentricity | 0.2004 |
| Orbital period | 2.50 yr (912 days) |
| Mean anomaly | 213.41° |
| Inclination | 46.640° |
| Longitude of ascending node | 143.51° |
| 290.19° | |
| Physical characteristics | |
| Dimensions | 4–11 km (conversion)[4] |
| SMASS = S [1] | |
| Absolute magnitude (H) | 13.8[1] |
3040 Kozai, provisional designation 1979 BA, is a stony asteroid and Mars-crosser on a tilted orbit from the innermost regions of the asteroid belt, approximately 4 kilometers in diameters.
The asteroid was discovered by American astronomer William Liller at Cerro Tololo Inter-American Observatory in Chile, on 23 January 1979, and named after Japanese astronomer Yoshihide Kozai.[2][3] It is considered a classical example of an object submitted to the Kozai effect, induced by an outer perturber, which in this case is the gas giant Jupiter.[5]
Orbit and classification
Kozai orbits the Sun in the inner main-belt at a distance of 1.5–2.2 AU once every 2 years and 6 months (912 days). Its orbit has an eccentricity of 0.20 and an inclination of 47° with respect to the ecliptic.[1]
On 10 January 2044, the asteroid will make a close approach to Mars, passing the Red Planet at a distance of 0.034 AU (5,090,000 km).[1]
Physical characteristics
In the SMASS classification, Kozai is a common S-type asteroid.[1] As of 2017, little is known about its size, composition, albedo and rotation.[1][6]
With an absolute magnitude of 13.8, Kozai's diameter can be estimated to measure between 4 and 11 kilometers, for an assumed albedo in the range of 0.05–0.25.[4] Since Kozai is a brighter S-type asteroid rather than a darker carbonaceous body, its diameter is on the lower end of NASA's generic conversion table, as the larger the body's diameter, the lower its albedo at a constant absolute magnitude.[4]
Naming
This minor planet was named in honour of 20th-century Japanese astronomer Yoshihide Kozai, discoverer of the periodic comet D/1977 C1 (Skiff-Kosai) and of the Kozai mechanism.[2] The official naming citation was published by the Minor Planet Center on 2 July 1985 (M.P.C. 9770).[7]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 "JPL Small-Body Database Browser: 3040 Kozai (1979 BA)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003040.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(3040) Kozai". Dictionary of Minor Planet Names – (3040) Kozai. Springer Berlin Heidelberg. p. 250. doi:10.1007/978-3-540-29925-7_3041. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 "3040 Kozai (1979 BA)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=3040.
- ↑ 4.0 4.1 4.2 "Absolute Magnitude (H)". NASA/JPL. http://neo.jpl.nasa.gov/glossary/h.html.
- ↑ Fuente, Marcos (June 2014). "Extreme trans-Neptunian objects and the Kozai mechanism: signalling the presence of trans-Plutonian planets". Monthly Notices of the Royal Astronomical Society: Letters 443: L59–L63. doi:10.1093/mnrasl/slu084. Bibcode: 2014MNRAS.443L..59D.
- ↑ "LCDB Data for (3040) Kozai". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=3040%7CKozai.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
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
- 3040 Kozai at AstDyS-2, Asteroids—Dynamic Site
- 3040 Kozai at the JPL Small-Body Database
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