55576 Amycus
55576 Amycus /ˈæmɪkəs/ is a centaur discovered on 8 April 2002 by the NEAT at Palomar.[1]
 Orbital diagram (top view) | |
| Discovery[1] | |
|---|---|
| Discovered by | NEAT |
| Discovery site | Palomar |
| Discovery date | 8 April 2002 |
| Designations | |
| (55576) Amycus | |
| Pronunciation | /ˈæmɪkəs/[2] |
Named after | Amycus |
| 2002 GB10 | |
| Centaur[1][3] | |
| Adjectives | Amycian /əˈmɪsiən/ |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 2 | |
| Observation arc | 7204 days (19.72 yr) |
| Aphelion | 35.019 AU (5.2388 Tm) (Q) |
| Perihelion | 15.178 AU (2.2706 Tm) (q) |
| 25.098 AU (3.7546 Tm) (a) | |
| Eccentricity | 0.39526 (e) |
| 125.74 yr (45926.7 d) | |
| 37.041° (M) | |
| 0° 0m 28.219s / day (n) | |
| Inclination | 13.352° (i) |
| 315.45° (Ω) | |
| 239.17° (ω) | |
| Jupiter MOID | 9.92261 AU (1.484401 Tm) |
| TJupiter | 4.133 |
| Physical characteristics | |
| Dimensions | 76.3±12.5 km[4][5] |
| 9.76 h (0.407 d) | |
| ~ 0.18[4] | |
| ~ 20[7] | |
| 7.8[1] | |
The minor planet was named for Amycus, a male centaur in Greek mythology.
It came to perihelion in February 2003.[1] Data from the Spitzer Space Telescope gave a diameter of 76.3±12.5 km.[4][5]
A low probability asteroid occultation of star UCAC2 17967364 with an apparent magnitude of +13.8 was possible on 11 February 2009.[8] Another such event involving a star with an apparent magnitude of +12.9 occurred on 10 April 2014 at about 10:46 Universal Time, visible for observers in the southwest US and western Mexico.[9]
Near 3:4 resonance of Uranus
Amycus (2002 GB10) lies within 0.009 AU of the 3:4 resonance of Uranus and is estimated to have a long orbital half-life of about 11.1 Myr.[10]
See also
References
- "JPL Small-Body Database Browser: 55576 Amycus (2002 GB10)" (2007-08-15 last obs). Retrieved 12 April 2016.
- Noah Webster (1884) A Practical Dictionary of the English Language
- Marc W. Buie. "Orbit Fit and Astrometric record for 55576" (2003-06-22 using 73 of 81 observations). SwRI (Space Science Department). Archived from the original on 4 June 2011. Retrieved 28 February 2009.
- John Stansberry; Will Grundy; Mike Brown; Dale Cruikshank; John Spencer; David Trilling; Jean-Luc Margot (20 February 2007). "Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope". arXiv:astro-ph/0702538.
- Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 13 February 2009. Retrieved 28 February 2009.
- Hainaut, O. R.; Boehnhardt, H.; Protopapa, S. (October 2012). "Colours of minor bodies in the outer solar system. II. A statistical analysis revisited". Astronomy and Astrophysics. 546: 20. arXiv:1209.1896. Bibcode:2012A&A...546A.115H. doi:10.1051/0004-6361/201219566. Retrieved 26 September 2019.
- "AstDys (55576) Amycus Ephemerides". Department of Mathematics, University of Pisa, Italy. Archived from the original on 26 May 2011. Retrieved 15 March 2009.
- Steve Preston (8 January 2009). "Star occultation by asteroid 55576 Amycus". IOTA (International Occultation Timing Association). Retrieved 28 December 2009.
- Hans-J. Bode; Filipe Braga Ribas; B. Sicardy (2013). "Bright Star Occultations by TNOs in 2014. J. Occultation Astronomy 2014-1". IOTA (International Occultation Timing Association). Cite journal requires
|journal=(help) - 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: 798–810. arXiv:astro-ph/0407400. Bibcode:2004MNRAS.354..798H. doi:10.1111/j.1365-2966.2004.08240.x.