4147_Lennon
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]
| Discovery [1] | |
|---|---|
| Discovered by | B. A. Skiff |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 12 January 1983 |
| Designations | |
| (4147) Lennon | |
Named after | John Lennon (musician, The Beatles)[2] |
| 1983 AY · 1971 YG 1980 KA | |
| main-belt · Vestian [3] | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 44.51 yr (16,258 days) |
| Aphelion | 2.5524 AU |
| Perihelion | 2.1712 AU |
| 2.3618 AU | |
| Eccentricity | 0.0807 |
| 3.63 yr (1,326 days) | |
| 88.732° | |
| 0° 16m 17.4s / day | |
| Inclination | 5.7326° |
| 288.57° | |
| 302.94° | |
| Physical characteristics | |
| Dimensions | 5.171±0.087 km[4][5] 7.13±0.37 km[6] 7.46 km (calculated)[3] |
| 137 h[7] | |
| 0.20 (assumed)[3] 0.240±0.049[6] 0.4166±0.0564[4] | |
| V [7]: 5 · S [3] | |
| 12.90[6] · 13.0[1][3][4] · 13.63±0.34[8] | |
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]
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 (U=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).
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]
- "JPL Small-Body Database Browser: 4147 Lennon (1983 AY)" (2016-06-20 last obs.). Jet Propulsion Laboratory. Retrieved 20 June 2017.
- 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.
- "LCDB Data for (4147) Lennon". Asteroid Lightcurve Database (LCDB). Retrieved 10 August 2016.
- 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
- 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. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 5 December 2016.
- 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. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 10 August 2016.
- 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. arXiv:1204.0548. Bibcode:2012LPICo1667.6281H.
- 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. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 10 August 2016.
- "4147 Lennon (1983 AY)". Minor Planet Center. Retrieved 10 August 2016.
- "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 August 2016.
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 4147 Lennon at AstDyS-2, Asteroids—Dynamic Site
- 4147 Lennon at the JPL Small-Body Database
