2005 TN53
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Discovery
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| Discovery date | 2005 |
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Designations
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| Minor planet category |
Trojan asteroid |
| Epoch 2012-Mar-14.0 (JD 2456000.5) | |
| Aphelion | 32.36 AU |
| Perihelion | 28.20 AU |
| Semi-major axis | 30.28 AU |
| Eccentricity | 0.068 |
| Orbital period | 166.6 yr (60,856 d) |
| Mean anomaly | 296.1° |
| Inclination | 24.966° |
| Longitude of ascending node | 9.2746° |
| Argument of perihelion | 84.1° |
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Physical characteristics
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| Dimensions | 40–90 km[3] |
| Absolute magnitude (H) | 9.1[1] |
2005 TN53 (also written 2005 TN53) is a Neptune trojan discovered by Scott S. Sheppard and Chadwick A. Trujillo in 2005.[4] It was the third such body to be discovered. It has the same orbital period as Neptune and orbits at the L4 Lagrangian point about 60 degrees ahead of Neptune.[5]
It has an inclination of 25 degrees.[5][1]
With an absolute magnitude of 9.1,[1] it is likely the smallest known Neptune trojan with a diameter in the range of 40 to 90 km.[3]
It has been observed 23 times over 3 oppositions.[1]
[edit] References
- ^ a b c d e "JPL Small-Body Database Browser: 2005 TN53". http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005TN53. Retrieved 2008-05-08.
- ^ AstDys-2 about 2005 TN53
- ^ a b "Absolute Magnitude (H)". http://neo.jpl.nasa.gov/glossary/h.html. Retrieved 2008-05-08.
- ^ Sheppard, Scott S.; Trujillo, Chadwick A. (June 2006). "A Thick Cloud of Neptune Trojans and Their Colors" (PDF). Science 313 (5786): 511–514. Bibcode 2006Sci...313..511S. doi:10.1126/science.1127173. PMID 16778021. http://www.dtm.ciw.edu/users/sheppard/pub/Sheppard06NepTroj.pdf. Retrieved 2008-02-26.
- ^ a b "List Of Neptune Trojans". Minor Planet Center. http://cfa-www.harvard.edu/iau/lists/NeptuneTrojans.html. Retrieved 2008-05-08.
[edit] External links
- Orbital simulation from JPL (Java) / Ephemeris
- Three New "Trojan" Asteroids Found Sharing Neptune's Orbit by Scott S. Sheppard (includes image of 2005 TN53)
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