Astronomy:(119951) 2002 KX14

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(119951) 2002 KX14
119951-2002kx14 hst.jpg
Hubble Space Telescope image of 2002 KX14 taken in 2006
Discovery[1]
Discovered byMichael E. Brown, Chad Trujillo
Discovery date17 May 2002
Designations
(119951) 2002 KX14
Minor planet categoryTNO
cubewano[2]
plutino-like
Orbital characteristics[1][2]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc10192 days (27.90 yr)
Earliest precovery date31 May 1984
|{{{apsis}}}|helion}}40.491 astronomical unit|AU (6.0574 Tm)
|{{{apsis}}}|helion}}37.244 AU (5.5716 Tm)
38.867 AU (5.8144 Tm)
Eccentricity0.041762
Orbital period242.32 yr (88506.6 d)
Average Orbital speed4.77 km/s
Mean anomaly261.303°
Mean motion0° 0m 14.643s / day
Inclination0.40348°
Longitude of ascending node286.686°
|{{{apsis}}}|helion}}≈ 30 May 2085[3]
±13 days
71.686°
Earth MOID36.2388 AU (5.42125 Tm)
Jupiter MOID32.2786 AU (4.82881 Tm)
Physical characteristics
Dimensions496±9×230±27 km[4]
Mean diameter393±19 km[5]
365+30
−21 km[6]
455±27 km[7]
415±1 km (chord)[6]
Rotation period9–11 h[6]
Geometric albedo0.097+0.014
−0.013[7]
Physics≈45 K
Apparent magnitude20.4 (opposition)[8][9]
Absolute magnitude (H)4.862±0.038,[7] 4.6[1]


(119951) 2002 KX14 (provisional designation 2002 KX14) is a medium-sized trans-Neptunian object (TNO) residing within the Kuiper belt. It was discovered on 17 May 2002 by Michael E. Brown and Chad Trujillo.[1]

It has a semi-major axis, orbital period and orbital eccentricity close to that of a plutino.[10] The orbital periods of plutinos cluster around 247.2 years (1.5 times Neptune's orbital period), close to 2002 KX14's orbital period. However, 2002 KX14 is not a plutino, as it is not actually in a resonance with Neptune, and it may have formed near its present nearly circular orbit lying almost perfectly on the ecliptic. This TNO may have remained dynamically cold since its formation, and thus its orbit may not have been a direct result of significant perturbations from Neptune during its migration to the outer solar system. The Deep Ecliptic Survey (DES) currently classifies it as a cubewano (classical) based on a 10-million-year integration of the orbit.[2]

2002KX14-orbit.png

2002 KX14 comes to opposition in late May at an apparent magnitude of 20.4.[8][9] This makes it about 360 times fainter than Pluto.[11]

The evolution of the semi-major axis of both Pluto (pink) and (119951) 2002 KX14 (blue).

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 119951 (2002 KX14)". (last obs). 2006-04-26. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=119951. 
  2. ↑ 2.0 2.1 2.2 Marc W. Buie (2006-04-26). "Orbit Fit and Astrometric record for 119951". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/119951.html. 
  3. ↑ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
  4. ↑ "(119951) 2002 KX14 2020 May 26". Euraster. 26 May 2020. https://www.euraster.net/results/2020/20200526-2002KX14_crd.gif. 
  5. ↑ Kretlow, Mike; Sicardy, Bruno; Santos-Sanz, Pablo; Ortiz, Jose L.; Desmars, Josselin; Morales, Nicolás (September 2021). "The May 26, 2020 multi-chord stellar occultation by the trans-Neptunian object (119951) 2002 KX14". 15th Europlanet Science Congress 2021. Europlanet Society. doi:10.5194/epsc2021-520. EPSC2021-520. Bibcode: 2021EPSC...15..520K. https://presentations.copernicus.org/EPSC2021/EPSC2021-520_presentation-h720659.pdf. Retrieved 26 June 2022. 
  6. ↑ 6.0 6.1 6.2 Alvarez-Candal, A. et al. (November 2014). "Stellar occultation by (119951) 2002 KX14 on April 26, 2012". Astronomy & Astrophysics 571 (A48): 8. doi:10.1051/0004-6361/201424648. Bibcode: 2014A&A...571A..48A. https://www.boulder.swri.edu/ekonews/issues/past/n096/html/index.html. 
  7. ↑ 7.0 7.1 7.2 Vilenius, E. et al. (2012). ""TNOs are Cool": A survey of the trans-Neptunian region VI. Herschel/PACS observations and thermal modeling of 19 classical Kuiper belt objects". Astronomy & Astrophysics 541: A94. doi:10.1051/0004-6361/201118743. Bibcode: 2012A&A...541A..94V. 
  8. ↑ 8.0 8.1 "(119951) = 2002 KX14". IAU Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=119951. 
  9. ↑ 9.0 9.1 "HORIZONS Web-Interface". JPL Solar System Dynamics. http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=119951. 
  10. ↑ John S. Lewis (2004). "Plutinos 2nd paragraph". Physics and Chemistry of the Solar System. Academic Press. p. 410. ISBN 978-0-12-446744-6. https://books.google.com/books?id=zm3ChHeFJn8C&pg=PA410. 
  11. ↑ (5th root of 100)^(20.4-14=363)

External links



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