To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

How to transfigure the Wikipedia

Would you like Wikipedia to always look as professional and up-to-date? We have created a browser extension. It will enhance any encyclopedic page you visit with the magic of the WIKI 2 technology.

Try it — you can delete it anytime.

Install in 5 seconds
4,5
Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.
Great Wikipedia has got greater.
.
Leo
Newton
Brights
Milds

(42301) 2001 UR163

From Wikipedia, the free encyclopedia

(42301) 2001 UR163
Hubble Space Telescope image of 2001 UR163 taken in 2005
Discovery[1][2]
Discovered byDES
Discovery siteKitt Peak National Obs.
Discovery date21 October 2001
Designations
(42301) 2001 UR163
2001 UR163
TNO[3] · 4:9 res[4][5]
distant[1]
Orbital characteristics[3]
Epoch 1 July 2021 (JD 2459396.5)
Uncertainty parameter 2[1][3]
Observation arc38.45 yr (14,045 d)
Aphelion66.643 AU
Perihelion36.987 AU
51.815 AU
Eccentricity0.2862
372.98 yr (136,232 d)
80.814°
0° 0m 9.36s / day
Inclination0.7531°
301.39°
8 October 1937
344.50°
Physical characteristics
Mean diameter
352±85 km[4][6]: 26 
0.209±0.08[4][6]
21.3[9]
4.21[1][3]

(42301) 2001 UR163 (provisional designation 2001 UR163) is a resonant trans-Neptunian object and possible dwarf planet located in the outermost region of the Solar System. The object measures approximately 352 kilometers (220 miles) in diameter with a high albedo and stays in an uncommon orbital resonance (4:9) with Neptune. It was discovered on 21 October 2001 by astronomers of the Deep Ecliptic Survey program at Kitt Peak National Observatory near Tucson, Arizona, United States. As of 2021, it has not been named.[1]

Classification and orbit

2001 UR163 has been characterized as a dwarf planet candidate.[10] Based on assumptions and estimates, Michael Brown gives it a "likely"-status on his website, which is the third highest status after "near certainty" and "highly likely" (also see his classification table).[11]

The object orbits the Sun at a distance of 37.0–66.6 AU once every 372 years and 12 months (136,232 days; semi-major axis of 51.82 AU). Its orbit has an eccentricity of 0.29 and an inclination of 1° with respect to the ecliptic.[3] It came to perihelion on 8 October 1937, and has since been moving away from the Sun.[3] In 2006, it moved beyond a distance of 50 AU and is at 53.7 AU as of 2021.[9] The body's observation arc begins with a precovery, published by the Digitized Sky Survey and taken at the Siding Spring Observatory in July 1982.[1]

Numbering and naming

2001 UR163 was numbered (42301) by the Minor Planet Center on 26 May 2002 (M.P.C. 45686).[12] As of 2021, it has not been named.[1] Acoording to the established naming conventions, it will receive a mythological or mythic name (not necessarily from Classical mythology), in particular one associated with creation.[13]

Physical characteristics

Lightcurve analysis shows only small deviations, suggesting that 2001 UR163 is a spheroid with small albedo spots.[10] Observations with Spitzer's Infrared Array Camera were used to study the body's surface composition. The analyzed data indicate the presence of 20% water ice, 60% amorphous silicates, and 20% organic compounds, including complex ones such as tholins.[6]: 20 

Diameter and albedo

2001 UR163 measures approximately 352 kilometers (220 miles) in diameter with a high albedo of 0.209.[4][6]: 26 

Based on previous estimates published on the Lightcurve Data Base and on Michael Brown's website, 2001 UR163 measures between 531 km (330 mi) and 583 kilometers (360 miles), using an assumed intermediate surface albedo of 0.09 to 0.10 with an absolute magnitude of 4.49 and 4.4, respectively.[7][11]

See also

References

  1. ^ a b c d e f g "42301 (2001 UR163)". Minor Planet Center. Retrieved 27 July 2021.
  2. ^ Marsden, Brian G. (14 November 2001). "MPEC 2001-V57: 2001 QX322, 2001 UR163, 2001 VN71". IAU – Minor Planet Center. Minor Planet Electronic Circulars. Archived from the original on 11 April 2010. (K01UG3R*)
  3. ^ a b c d e f "JPL Small-Body Database Browser: 42301 (2001 UR163)" (2021-01-08 last obs.). Jet Propulsion Laboratory. Retrieved 27 July 2021.
  4. ^ a b c d Johnston, Wm. Robert (18 August 2020). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 27 July 2021.
  5. ^ Marc W. Buie. "Orbit Fit and Astrometric record for 42301". SwRI–Southwest Research Institute. Retrieved 27 July 2021.The Deep Ecliptic Survey Object Classifications
  6. ^ a b c d e Fernández-Valenzuela, E.; Pinilla-Alonso, N.; Stansberry, J.; Emery, J. P.; Perkins, W.; Van Laerhoven, C.; et al. (February 2021). "Compositional Study of Trans-Neptunian Objects at λ > 2.2 μm". The Planetary Science Journal. 2 (1): 10. arXiv:2011.07121. Bibcode:2021PSJ.....2...10F. doi:10.3847/PSJ/abc34e. ISSN 2632-3338. S2CID 234003733.
  7. ^ a b "LCDB Data for (42301)". Asteroid Lightcurve Database (LCDB). Retrieved 27 July 2021.
  8. ^ a b c d Belskaya, Irina N.; Barucci, Maria A.; Fulchignoni, Marcello; Dovgopol, Anatolij N. (April 2015). "Updated taxonomy of trans-neptunian objects and centaurs: Influence of albedo". Icarus. 250: 482–491. Bibcode:2015Icar..250..482B. doi:10.1016/j.icarus.2014.12.004.
  9. ^ a b "Asteroid (42301) 2001 UR163 – Ephemerides". AstDyS-2, Asteroids – Dynamic Site, Department of Mathematics, University of Pisa. Retrieved 27 July 2021.
  10. ^ a b Tancredi, Gonzalo; Favre, Sofía (June 2008). "Which are the dwarfs in the Solar System?" (PDF). Icarus. 195 (2): 851–862. Bibcode:2008Icar..195..851T. doi:10.1016/j.icarus.2007.12.020. ISSN 0019-1035.
  11. ^ a b Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. Retrieved 31 August 2016.
  12. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 July 2021.
  13. ^ "Naming of Astronomical Objects – Minor planets". IAU – International Astronomical Union. Retrieved 27 July 2021.

External links

This page was last edited on 18 January 2024, at 21:31
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.
Contact WIKI 2
Introduction
Terms of Service
Privacy Policy