User:Amit6/infpluto
| 200px Map of Pluto based on Charon eclipses, approximately true color and among the highest resolutions possible with current technology | |||||||||
| Discovery | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Discovered by | Clyde W. Tombaugh | ||||||||
| Discovery date | February 18, 1930 | ||||||||
| Designations | |||||||||
Designation | 134340 Pluto | ||||||||
| dwarf planet, TNO, plutoid, KBO, plutino | |||||||||
| Adjectives | Plutonian | ||||||||
| Symbol |  | ||||||||
| Orbital characteristics | |||||||||
| Epoch J2000 | |||||||||
| Aphelion | 7,375,927,931 km 49.305 032 87 AU | ||||||||
| Perihelion | 4,436,824,613 km 29.658 340 67 AU | ||||||||
| 5,906,376,272 km 39.481 686 77 AU | |||||||||
| Eccentricity | 0.248 807 66 | ||||||||
| 90,613.305 days 248.09 years | |||||||||
| 366.73 days | |||||||||
Average orbital speed | 4.666 km/s | ||||||||
| Inclination | 17.141 75° 11.88° to Sun's equator | ||||||||
| 110.303 47° | |||||||||
| 113.763 29° | |||||||||
| Known satellites | 3 | ||||||||
| Physical characteristics | |||||||||
| 1,151 km[1] 0.18 Earths | |||||||||
| 1.665×107 km²[1] 0.033 Earths | |||||||||
| Volume | 6,39×109 km³[1] 0.0059 Earths | ||||||||
| Mass | (1.305 ± 0.007)×1022 kg[2] 0.002 1 Earths 0.178 moon | ||||||||
Mean density | 2.03 ± 0.06 g/cm³[2] | ||||||||
| 0.81 m/s²[1] 0.059 g | |||||||||
| 1.27 km/s[1] | |||||||||
| −6.387 230 day 6 d 9 h 17 m 36 s | |||||||||
Equatorial rotation velocity | 47.18 km/h | ||||||||
| 119.591 ± 0.014° (to orbit)[2][3] | |||||||||
North pole right ascension | 133.046 ± 0.014°[2] | ||||||||
North pole declination | -6.145 ± 0.014°[2] | ||||||||
| Albedo | 0.49–0.66 (varies by 35%)[4][5] | ||||||||
| |||||||||
| up to 13.65 (mean is 15.1)[5] | |||||||||
| −0.7[6] | |||||||||
| 0.065" to 0.115"[5][7] | |||||||||
| Atmosphere | |||||||||
Surface pressure | 0.30 Pa (summer maximum) | ||||||||
| Composition by volume | nitrogen, methane | ||||||||
- ^ a b c d e "Solar System Exploration: Planets: Pluto: Facts & Figures". NASA. 2008-06-13. Retrieved 2009-03-09.
- ^ a b c d e M. W. Buie, W. M. Grundy, E. F. Young, L. A. Young, S. A. Stern (2006). "Orbits and photometry of Pluto's satellites: Charon, S/2005 P1, and S/2005 P2". Astronomical Journal. 132: 290. arXiv:astro-ph/0512491. Bibcode:2006AJ....132..290B. doi:10.1086/504422.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Based on the orientation of Charon's orbit, which is assumed the same as Pluto's spin axis due to the mutual tidal locking.
- ^ Calvin J. Hamilton (2006-02-12). "Dwarf Planet Pluto". Views of the Solar System. Retrieved 2007-01-10.
- ^ a b c Cite error: The named reference
Pluto Fact Sheetwas invoked but never defined (see the help page). - ^ "JPL Small-Body Database Browser: 134340 Pluto". Retrieved 2008-06-12.
- ^ Based on geometry of minimum and maximum distance from Earth and Pluto radius in the factsheet