Ceres (dwarf planet)
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| Discovery[1] | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Discovered bi | Giuseppe Piazzi | ||||||||
| Discovery date | 1 Januar 1801 | ||||||||
| Designations | |||||||||
| MPC designation | 1 Ceres | ||||||||
| Pronunciation | /ˈsɪəriːz/ SEER-eez | ||||||||
Named after | Cerēs | ||||||||
| A899 OF; 1943 XB | |||||||||
| dwarf planet main belt | |||||||||
| Adjectives | Cererian /sɨˈrɪəri.ən/ or Cererean /sɛrɨˈriːən/[2] | ||||||||
| Orbital chairactereestics[4] | |||||||||
| Epoch 2013-Nov-04 (JD 2456600.5) | |||||||||
| Aphelion | 445280000 km (2.9765 AU) | ||||||||
| Perihelion | 382520000 km (2.5570 AU) | ||||||||
| 413910000 km (2.7668 AU) | |||||||||
| Eccentricity | 0.075797 | ||||||||
| 4.60 yr 1680.99 d | |||||||||
| 466.7 d 1.278 yr | |||||||||
Average orbital speed | 17.882 km/s | ||||||||
| 10.557° | |||||||||
| Inclination | 10.593° tae Ecliptic 9.20° tae Invariable plane[3] | ||||||||
| 80.3276° | |||||||||
| 72.2921° | |||||||||
| Satellites | None | ||||||||
| Proper orbital elements[5] | |||||||||
Proper semi-major axis | 2.7670962 AU | ||||||||
Proper eccentricity | 0.1161977 | ||||||||
Proper inclination | 9.6474122° | ||||||||
Proper mean motion | 78.193318 deg / yr | ||||||||
Proper orbital period | 4.60397 yr (1681.601 d) | ||||||||
Precession o perihelion | 54.070272 arcsec / yr | ||||||||
Precession of the ascending node | −59.170034 arcsec / yr | ||||||||
| Pheesical chairacteristics | |||||||||
Mean radius | 476.2 ± ?? km[6] | ||||||||
Equatorial radius | 487.3±1.8 km[7] | ||||||||
Polar radius | 454.7±1.6 km[7] | ||||||||
Surface area | 2850000 km2 | ||||||||
| Mass | (9.43±0.07)×1020 kg,[8] 9.47±??[6] 0.00015 Yirds 0.0128 Muins | ||||||||
Mean density | 2.077±0.036 g/cm3,[7] 2.09±??[6] | ||||||||
| 0.28 m/s2[6] 0.029 g | |||||||||
| 0.51 km/s[9] | |||||||||
Sidereal rotation period | 0.3781 d 9.074170±0.000002 h[10] | ||||||||
| ≈ 3°[7] | |||||||||
North pole right ascension | 19h 24m 291°[7] | ||||||||
North pole declination | 59°[7] | ||||||||
| Albedo | 0.090±0.0033 (V-band geometric)[11] | ||||||||
| |||||||||
Spectral teep | C[12] | ||||||||
| 6.64[13] tae 9.34[14] | |||||||||
| 3.36±0.02[11] | |||||||||
| 0.854″ to 0.339″ | |||||||||
Ceres (minor-planet designation 1 Ceres; seembol: .svg){kind=small}
)[17] /ˈsɪəriːz/ (SEER-eez)[18] is the lairgest object in the asteroid belt, which lies atween the orbits o Maurs an Jupiter.
Notes
[eedit | eedit soorce]- ↑ This image wis taken bi the Dawn spacecraft on 2 Mey 2015, during a "rotation chairacterisation" orbit, 13,642 kilometre (8,477 mi) abuin the surface o Ceres. Veesible at centre an centre richt are twa bricht spots, a phenomenon common on Ceres, in Oxo an Haulani craters respectively. Ahuna Mons is an aa veesible in the image as a noticeable, bluff hill, seen juist richt o bottom.
References
[eedit | eedit soorce]- ↑ Schmadel, Lutz (2003). Dictionary of minor planet names (5th ed.). Germany: Springer. p. 15. ISBN 978-3-540-00238-3.
- ↑ Simpson, D. P. (1979). Cassell's Latin Dictionary (5th ed.). London: Cassell Ltd. p. 883. ISBN 978-0-304-52257-6.
- ↑ "The MeanPlane (Invariable plane) of the Solar System passing through the barycenter". 3 Apryle 2009. Archived frae the original on 14 Mey 2009. Retrieved 10 Apryle 2009. Unknown parameter
|deadurl=ignored (help) (produced with Solex 10 Archived 2008-03-01 at the Wayback Machine written by Aldo Vitagliano; see also Invariable plane) - ↑ "1 Ceres". JPL Small-Body Database Browser. Archived frae the original on 4 August 2012. Retrieved 3 December 2013. Unknown parameter
|deadurl=ignored (help) - ↑ "AstDyS-2 Ceres Synthetic Proper Orbital Elements". Department of Mathematics, University of Pisa, Italy. Archived frae the original on 5 October 2011. Retrieved 1 October 2011. Unknown parameter
|deadurl=ignored (help) - ↑ a b c d "Ceres". NASA fact sheet. NASA. 2 Apryle 2014. Archived frae the original on 8 Februar 2015. Retrieved 4 Mey 2014.
- ↑ a b c d e f Thomas, P. C.; Parker, J. Wm.; McFadden, L. A.; et al. (2005). "Differentiation of the asteroid Ceres as revealed by its shape". Nature. 437 (7056): 224–226. Bibcode:2005Natur.437..224T. doi:10.1038/nature03938. PMID 16148926. Explicit use of et al. in:
|author2=(help)CS1 maint: multiple names: authors leet (link) - ↑ Carry, Benoit; et al. (2007). "Near-Infrared Mapping and Physical Properties of the Dwarf-Planet Ceres" (PDF). Astronomy & Astrophysics. 478 (1): 235–244. arXiv:0711.1152. Bibcode:2008A&A...478..235C. doi:10.1051/0004-6361:20078166. Archived frae the original on 30 Mey 2008. Retrieved 7 November 2014. Explicit use of et al. in:
|author2=(help)CS1 maint: BOT: original-url status unknown (link) - ↑ Calculated based on the known parameters
- ↑ Chamberlain, Matthew A.; Sykes, Mark V.; Esquerdo, Gilbert A. (2007). "Ceres lightcurve analysis – Period determination". Icarus. 188 (2): 451–456. Bibcode:2007Icar..188..451C. doi:10.1016/j.icarus.2006.11.025.CS1 maint: multiple names: authors leet (link)
- ↑ a b Li, Jian-Yang; McFadden, Lucy A.; Parker, Joel Wm. (2006). "Photometric analysis of 1 Ceres and surface mapping from HST observations". Icarus. 182 (1): 143–160. Bibcode:2006Icar..182..143L. doi:10.1016/j.icarus.2005.12.012. Retrieved 8 December 2007.CS1 maint: multiple names: authors leet (link)
- ↑ Rivkin, A. S.; Volquardsen, E. L.; Clark, B. E. (2006). "The surface composition of Ceres:Discovery of carbonates and iron-rich clays" (PDF). Icarus. 185 (2): 563–567. Bibcode:2006Icar..185..563R. doi:10.1016/j.icarus.2006.08.022. Retrieved 8 December 2007.CS1 maint: multiple names: authors leet (link)
- ↑ Menzel, Donald H.; and Pasachoff, Jay M. (1983). A Field Guide to the Stars and Planets (2nd ed.). Boston, MA: Houghton Mifflin. p. 391. ISBN 978-0-395-34835-2.CS1 maint: multiple names: authors leet (link)
- ↑ APmag and AngSize generated with Horizons(Ephemeris: Observer Table: Quantities = 9,13,20,29) Archived 2021-02-04 at the Wayback Machine
- ↑ Angelo, Joseph A., Jr (2006). Encyclopedia of Space and Astronomy. New York: Infobase. p. 122. ISBN 0-8160-5330-8.CS1 maint: multiple names: authors leet (link)
- ↑ Saint-Pé, O.; Combes, N.; Rigaut F. (1993). "Ceres surface properties by high-resolution imaging from Earth". Icarus. 105 (2): 271–281. Bibcode:1993Icar..105..271S. doi:10.1006/icar.1993.1125.CS1 maint: multiple names: authors leet (link)
- ↑ JPL/NASA (22 Apryle 2015). "What is a Dwarf Planet?". Jet Propulsion Laboratory. Retrieved 19 Januar 2022.
- ↑ "Ceres". Dictionary.com. Random House, Inc. Archived frae the original on 5 October 2011. Retrieved 26 September 2007. Unknown parameter
|deadurl=ignored (help)
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