Astronomy:8116 Jeanperrin

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8116 Jeanperrin
Discovery [1]
Discovered byE. W. Elst
Discovery siteLa Silla Obs.
Discovery date17 April 1996
Designations
(8116) Jeanperrin
Named afterJean Baptiste Perrin [1]
(French physicist)
1996 HA15 · 1987 WU3
1990 RS11
Minor planet categorymain-belt [1][2] · (inner)
Flora [3][4]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc30.26 yr (11,051 d)
|{{{apsis}}}|helion}}2.6079 AU
|{{{apsis}}}|helion}}1.8916 AU
2.2498 AU
Eccentricity0.1592
Orbital period3.37 yr (1,233 d)
Mean anomaly36.814°
Mean motion0° 17m 31.56s / day
Inclination5.4335°
Longitude of ascending node48.972°
320.86°
Known satellites1 (D: 1.49 km; P: 36.15 h)[5][6]
Physical characteristics
Mean diameter3.66±0.10 km[7]
3.72±0.63 km[8]
4.773±0.075 km[9][10]
4.797 km[11]
4.80 km (taken)[4]
Rotation period3.6169±0.0002 h[6]
3.6169±0.0002 h[lower-alpha 1]
3.61692±0.00007 h[lower-alpha 2]
Geometric albedo0.1841[11]
0.1859±0.0353[10]
0.186±0.035[9]
0.40±0.19[8]
0.437±0.045[7]
S (assumed)[4]
V–R = 0.475±0.020[lower-alpha 2]
V–I = 0.870±0.030[lower-alpha 2]
Absolute magnitude (H)13.52±0.13[6]
13.64±0.04 (R)[lower-alpha 1]
13.70[7][8]
13.8[2]
13.98±0.35[12]
14.05[4][10][11][lower-alpha 2]


8116 Jeanperrin, provisional designation 1996 HA15, is a Florian asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 4.8 kilometers (3 miles) in diameter. It was discovered on 17 April 1996, by Belgian astronomer Eric Elst at the La Silla Observatory in northern Chile.[1] The likely stony S-type asteroid has a rotation period of 3.62 hours and a nearly round shape.[4] It was named for French physicist and Nobel laureate Jean Baptiste Perrin.[1] A minor-planet moon, a third the size of its primary, was discovered in 2007.[5][6]

Orbit and classification

Jeanperrin is a member of the Flora family (402),[3] a giant asteroid family and the largest family of stony asteroids in the main-belt.[4][13]

It orbits the Sun in the inner asteroid belt at a distance of 1.9–2.6 AU once every 3 years and 4 months (1,233 days; semi-major axis of 2.25 AU). Its orbit has an eccentricity of 0.16 and an inclination of 5° with respect to the ecliptic.[2] The body's observation arc begins with its first observations as 1987 WU3 at Anderson Mesa Station in November 1987, more than 8 years prior to its official discovery observation at La Silla.[1]

Physical characteristics

Jeanperrin is an assumed S-type asteroid,[4] which agrees with the overall spectral type for member of the Flora family.[13]:23

Rotation period

In October 2007, a rotational lightcurve of Jeanperrin was obtained from photometric observations by a large international collaboration of astronomers. Lightcurve analysis gave a rotation period of 3.6169 hours and a low brightness variation of 0.09 magnitude, indicative of a nearly spheroidal shape ({{{1}}}).[6] Additional observations by Petr Pravec at Ondřejov Observatory in 2007 and 2017, rendered a nearly identical period of 3.6169 and 3.61692 hours with an amplitude of 0.09 and 0.10 magnitude, respectively ({{{1}}}).[lower-alpha 1][lower-alpha 2]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Jeanperrin measures between 3.66 and 4.797 kilometers in diameter and its surface has an albedo between 0.1841 and 0.437.[7][8][9][10][11]

The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE data, that is, an albedo of 0.1841 and a (rounded) diameter of 4.80 kilometers based on an absolute magnitude of 14.05.[4]

Satellite

During the photometric observations in October 2007 (see above), it was also revealed, that Jeanperrin is a synchronous binary asteroid with a minor-planet moon in its orbit. The satellite measures approximately 1.49 kilometers in diameter (ds/dp-ratio of at least 0.33), and orbits its primary at an estimated average distance of 13 kilometers once every 36.15 hours (1.506 days).[5][6]

Naming

This minor planet was named after French physicist Jean Baptiste Perrin (1870–1942), who was awarded the 1926 Nobel Prize in Physics for his studies of Brownian motion (also see list of laureates).[1] The official naming citation was published by the Minor Planet Center on 11 February 1998 (M.P.C. 31299).[14]

Notes

  1. ↑ 1.0 1.1 1.2 Pravec (Feb 2012) web: rotation period 3.6169±0.0002 hours with a brightness amplitude of 0.10±0.01 mag. Quality code of 3. Summary figures for (8116) Jeanperrin at the LCDB and Pravec, P.; Wolf, M.; Sarounova, L. (2012) (Ondrejov data).
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Pravec (Oct 2007) web: observations in the R-band. Rotation period of 3.61692±0.00007 hours with a brightness amplitude of 0.09±0.01 mag. Quality code of 3. Summary figures for (8116) Jeanperrin at the LCDB and Pravec, P.; Wolf, M.; Sarounova, L. (2007) (Ondrejov data).

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 "8116 Jeanperrin (1996 HA15)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=8116. 
  2. ↑ 2.0 2.1 2.2 2.3 "JPL Small-Body Database Browser: 8116 Jeanperrin (1996 HA15)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008116. 
  3. ↑ 3.0 3.1 "Asteroid 8116 Jeanperrin – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=8116+Jeanperrin#Asteroid%208116%20JeanperrinEAR-A-VARGBDET-5-NESVORNYFAM-V3.0. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 "LCDB Data for (8116) Jeanperrin". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=8116%7CJeanperrin. 
  5. ↑ 5.0 5.1 5.2 Johnston, Wm. Robert (21 September 2014). "Asteroids with Satellites Database – (8116) Jeanperrin". Johnston's Archive. http://www.johnstonsarchive.net/astro/astmoons/am-08116.html. 
  6. ↑ 6.0 6.1 6.2 6.3 6.4 6.5 Higgins, D.; Pravec, P.; Kusnirak, P.; Hornoch, K.; Husarik, M.; Pikler, M. et al. (November 2007). "(8116) Jeanperrin". Central Bureau Electronic Telegrams 1127 (1127): 1. Bibcode: 2007CBET.1127....1H. http://www.cbat.eps.harvard.edu/iau/cbet/001100/CBET001127.txt. Retrieved 25 April 2018. 
  7. ↑ 7.0 7.1 7.2 7.3 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. 
  8. ↑ 8.0 8.1 8.2 8.3 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T. et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal 814 (2): 13. doi:10.1088/0004-637X/814/2/117. Bibcode: 2015ApJ...814..117N. 
  9. ↑ 9.0 9.1 9.2 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. 
  10. ↑ 10.0 10.1 10.2 10.3 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. 
  11. ↑ 11.0 11.1 11.2 11.3 Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus 221 (1): 365–387. doi:10.1016/j.icarus.2012.07.026. Bibcode: 2012Icar..221..365P. 
  12. ↑ 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. 
  13. ↑ 13.0 13.1 Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131. Bibcode: 2015aste.book..297N. 
  14. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. 

External links



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