Astronomy:4147 Lennon

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4147 Lennon
Discovery [1]
Discovered byB. A. Skiff
Discovery siteAnderson Mesa Stn.
Discovery date12 January 1983
Designations
(4147) Lennon
Named afterJohn Lennon
(musician, The Beatles)[2]
1983 AY · 1971 YG
1980 KA
Minor planet categorymain-belt · Vestian [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc44.51 yr (16,258 days)
|{{{apsis}}}|helion}}2.5524 AU
|{{{apsis}}}|helion}}2.1712 AU
2.3618 AU
Eccentricity0.0807
Orbital period3.63 yr (1,326 days)
Mean anomaly88.732°
Mean motion0° 16m 17.4s / day
Inclination5.7326°
Longitude of ascending node288.57°
302.94°
Physical characteristics
Dimensions5.171±0.087 km[4][5]
7.13±0.37 km[6]
7.46 km (calculated)[3]
Rotation period137 h[7]
Geometric albedo0.20 (assumed)[3]
0.240±0.049[6]
0.4166±0.0564[4]
V [7]:5 · S [3]
Absolute magnitude (H)12.90[6] · 13.0[1][3][4] · 13.63±0.34[8]


4147 Lennon, provisional designation 1983 AY, is a stony Vestian asteroid and a potentially slow rotator from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by American astronomer Brian Skiff at Lowell's Anderson Mesa Station on 12 January 1983.[9] It was later named after musician John Lennon.[2]

Orbit and classification

Lennon is a member of the Vesta family, which is named after the main-belt's second largest asteroid, 4 Vesta. It orbits the Sun in the inner main-belt at a distance of 2.2–2.6 AU once every 3 years and 8 months (1,326 days). Its orbit has an eccentricity of 0.08 and an inclination of 6° with respect to the ecliptic.[1] The first observation was made at Crimea–Nauchnij in 1971, extending the asteroid's observation arc by 12 years prior to its discovery.[9]

Physical characteristics

Lennon has been characterized as a V-type asteroid.[7]:5

Slow rotator

In October 2004, a rotational lightcurve of Lennon was obtained during a photometric survey of V-type asteroids at several observatories in Japan. The fragmentary lightcurve gave a very long rotation period of 137 hours with a high brightness variation of 0.6 in magnitude ({{{1}}}).[7]

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Lennon measures 5.2 and 7.1 kilometers in diameter and its surface has an albedo of 0.24 of 0.42, respectively.[4][5][6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for S-type asteroids of 0.20 and calculates a diameter of 7.5 kilometers with an absolute magnitude of 13.0.[3] The discrepancy is due to disagreement on the body's spectral type (V or S).

Naming

This minor planet was named in memory of English musician John Lennon (1940–1980), famous for his song "Imagine" and co-founder of The Beatles, one of the most successful bands in the history of popular music.[2]

The minor planets 8749 Beatles, 4149 Harrison, 4148 McCartney and 4150 Starr, were named after the band and its three other members. The official naming citation was published by the Minor Planet Center on 10 April 1990 (M.P.C. 16247).[10]

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 4147 Lennon (1983 AY)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004147. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(4147) Lennon". Dictionary of Minor Planet Names – (4147) Lennon. Springer Berlin Heidelberg. p. 354. doi:10.1007/978-3-540-29925-7_4119. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (4147) Lennon". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=4147%7CLennon. 
  4. ↑ 4.0 4.1 4.2 4.3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D. et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal 741 (2): 25. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. 
  5. ↑ 5.0 5.1 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 5 December 2016. 
  6. ↑ 6.0 6.1 6.2 6.3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C. et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 10 August 2016. 
  7. ↑ 7.0 7.1 7.2 7.3 Hasegawa, S.; Miyasaka, S.; Mito, H.; Sarugaku, Y.; Ozawa, T.; Kuroda, D. et al. (May 2012). "Lightcurve Survey of V-Type Asteroids. Observations Until 2005". Asteroids 1667: 6281. Bibcode: 2012LPICo1667.6281H. 
  8. ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 10 August 2016. 
  9. ↑ 9.0 9.1 "4147 Lennon (1983 AY)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=4147. 
  10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. 

External links



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