Astronomy:55576 Amycus
| File:55576 Amycus.tiff Orbital diagram (top view) | |
| Discovery[1] | |
|---|---|
| Discovered by | NEAT |
| Discovery site | Palomar |
| Discovery date | 8 April 2002 |
| Designations | |
| (55576) Amycus | |
| Pronunciation | /ˈæmɪkəs/[3] |
| Named after | Amycus |
| 2002 GB10 | |
| Minor planet category | Centaur[1][2] |
| Adjectives | Amycian /əˈmɪsiən/ |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 2 | |
| Observation arc | 7204 days (19.72 yr) |
| |{{{apsis}}}|helion}} | 35.019 astronomical unit|AU (5.2388 Tm) (Q) |
| |{{{apsis}}}|helion}} | 15.178 AU (2.2706 Tm) (q) |
| 25.098 AU (3.7546 Tm) (a) | |
| Eccentricity | 0.39526 (e) |
| Orbital period | 125.74 yr (45926.7 d) |
| Mean anomaly | 37.041° (M) |
| Mean motion | 0° 0m 28.219s / day (n) |
| Inclination | 13.352° (i) |
| Longitude of ascending node | 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] |
| Rotation period | 9.76 h (0.407 d) |
| Geometric albedo | ~ 0.18[4] |
| Apparent magnitude | ~ 20[7] |
| Absolute magnitude (H) | 7.8[1] |
55576 Amycus /ˈæmɪkəs/ is a centaur discovered on 8 April 2002 by the NEAT at Palomar.[1] The minor planet was named for Amycus, a male centaur in Greek mythology.
Amycus 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]
Orbit
Near 3:4 resonance of Uranus
Amycus 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][11]
Physical characteristics
Template:Section needs expansion
Size and color
Amycus has a measured diameter of about 76.3±12.5 km[4][5] and a relatively high albedo of 0.18.[4] The B–V color index of Amycus is approximately 1.111±0.034.[6]
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "JPL Small-Body Database Browser: 55576 Amycus (2002 GB10)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=55576.
- ↑ Marc W. Buie. "Orbit Fit and Astrometric record for 55576". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/55576.html.
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 4.0 4.1 4.2 4.3 4.4 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.
- ↑ 5.0 5.1 5.2 Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html.
- ↑ 6.0 6.1 6.2 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. doi:10.1051/0004-6361/201219566. Bibcode: 2012A&A...546A.115H. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A.115H. Retrieved 26 September 2019.
- ↑ "AstDys (55576) Amycus Ephemerides". Department of Mathematics, University of Pisa, Italy. https://newton.spacedys.com/astdys/index.php?pc=1.1.3.0&n=Amycus.
- ↑ Steve Preston (2009-01-08). "Star occultation by asteroid 55576 Amycus". IOTA (International Occultation Timing Association). http://www.asteroidoccultation.com/2009_02/0211_55576_17253_Summary.txt.
- ↑ 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).
- ↑ 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. doi:10.1111/j.1365-2966.2004.08240.x. Bibcode: 2004MNRAS.354..798H.
- ↑ Showalter, Mark R.; Benecchi, Susan D.; Buie, Marc W.; Grundy, William M.; Keane, James T.; Lisse, Carey M.; Olkin, Cathy B.; Porter, Simon B. et al. (2021). "A statistical review of light curves and the prevalence of contact binaries in the Kuiper Belt" (in en). Icarus 356. doi:10.1016/j.icarus.2020.114098. Bibcode: 2021Icar..35614098S.
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