10370 Hylonome
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Discovery[1]
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| Discovered by | David C. Jewitt and Jane Luu |
| Discovery site | Mauna Kea Observatory |
| Discovery date | February 27, 1995 |
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Designations
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| MPC designation | 10370 |
| Alternate name(s) | 1995 DW2 |
| Minor planet category |
Centaur (minor planet) |
| Epoch November 30, 2008 | |
| Aphelion | 31.3488 AU |
| Perihelion | 18.9152 AU |
| Semi-major axis | 25.132 AU |
| Eccentricity | 0.247367 |
| Orbital period | 126 y (46019.2 d) |
| Mean anomaly | 38.378° |
| Inclination | 4.144° |
| Longitude of ascending node | 178.218° |
| Argument of perihelion | 6.884° |
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Physical characteristics
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| Dimensions | 70 ± 20 km[3] |
| Apparent magnitude | 21.9[4] |
| Absolute magnitude (H) | 8.408 |
10370 Hylonome (
/haɪˈlɒnəmiː/; from Greek: ‘Υλονομη) is a small Solar System body orbiting in the outer Solar System. It belongs to the class of icy objects that are known as centaurs, with an orbit that crosses the orbit of Neptune and grazes that of Uranus. It was discovered on February 27, 1995.[1]
10370 Hylonome was named for Hylonome, a female centaur in Greek mythology.
Observations with the infrared Spitzer Space Telescope show a diameter of 10370 to be 70 km (43 mi) plus or minus 20 km (50 to 90 km in diameter), or a 35 km radius.[3]
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[edit] Orbit
The orbits of centaurs are unstable due to perturbations by the giant planets. Currently Uranus controls Hylonome's perihelion and Neptune its aphelion.[5] It is estimated to have a relatively long orbital half-life of about 6.37 Myr.[5] In the year 3478, Hylonome will pass within ~85Gm of Uranus and its semi-major axis will be reduced to 23.5AU.[6]
[edit] See also
[edit] References
- ^ a b "Discovery Circumstances: Numbered Minor Planets (10001)-(15000)". IAU: Minor Planet Center. Archived from the original on 11 January 2009. http://web.archive.org/web/20090111211536/http://www.cfa.harvard.edu/iau/lists/NumberedMPs010001.html. Retrieved December 20, 2008.
- ^ "(10370) Hylonome". AstDyS. Italy: University of Pisa. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.0&n=10370. Retrieved December 20, 2008.
- ^ a b John Stansberry, Will Grundy, Mike Brown, Dale Cruikshank, John Spencer, David Trilling, Jean-Luc Margot (2007-02-20). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". arXiv:astro-ph/0702538 [astro-ph].
- ^ "AstDyS (10370) Hylonome Ephemerides". Department of Mathematics, University of Pisa, Italy. Archived from the original on 2009-09-16. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.0&n=10370. Retrieved 2009-09-13.
- ^ a b Horner, J.; Evans, N.W.; Bailey, M. E. (2004). "Simulations of the Population of Centaurs I: The Bulk Statistics". Monthly Notices of the Royal Astronomical Society 354 (3): 798–810. arXiv:astro-ph/0407400. Bibcode 2004MNRAS.354..798H. doi:10.1111/j.1365-2966.2004.08240.x.
- ^ "Fifty clones of Centaur 10370 Hylonome all passing within ~85Gm of Uranus in 3478 Oct". Archived from the original on 2009-04-29. http://home.surewest.net/kheider/astro/Hylonome3478.txt. Retrieved 2009-04-25. (Solex 10). Accessed 2009-04-25.
[edit] External links
- Hylonome as seen around 08 Sept 2009 by the new Hubble WFC3.
- List of Centaurs and SDOs.
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