Astronomy:1461 Jean-Jacques

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1461 Jean-Jacques
Discovery[1]
Discovered byM. Laugier
Discovery siteNice Obs.
Discovery date30 December 1937
Designations
(1461) Jean-Jacques
Named afterJean-Jacques Laugier
(son of discoverer)[2]
1937 YL · 1935 OH
1939 GH
Minor planet categorymain-belt · (outer)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc81.92 yr (29,921 days)
|{{{apsis}}}|helion}}3.2752 AU
|{{{apsis}}}|helion}}2.9749 AU
3.1250 AU
Eccentricity0.0480
Orbital period5.52 yr (2,018 days)
Mean anomaly183.52°
Mean motion0° 10m 42.24s / day
Inclination15.314°
Longitude of ascending node104.64°
335.41°
Physical characteristics
Dimensions25.33±1.04 km[4]
32.94±1.4 km (IRAS:8)[5]
33.75±1.40 km[6]
35.145±0.172[7]
41.431±0.464 km[8]
Rotation period16.56±0.01 h[9]
Geometric albedo0.1022±0.0095[8]
0.1613±0.014 (IRAS:8)[5]
0.168±0.017[6]
0.172±0.030[7]
0.273±0.043[4]
Tholen = M[1] · X[10] · M[3]
B–V = 0.715[1]
U–B = 0.210[1]
Absolute magnitude (H)9.97±0.33[10] · 10.01[1][3][4][5][6][8]


1461 Jean-Jacques, provisional designation 1937 YL, is a metallic asteroid from the outer region of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 30 December 1937, by French astronomer Marguerite Laugier at Nice Observatory in southern France, who named it after her son Jean-Jacques Laugier.[11]

Orbit and classification

Jean-Jacques orbits the Sun in the outer main-belt at a distance of 3.0–3.3 AU once every 5 years and 6 months (2,018 days). Its orbit has an eccentricity of 0.05 and an inclination of 15° with respect to the ecliptic.[1] The asteroid was first identified as 1935 OH at Johannesburg Observatory in 1935, extending the body's observation arc by 2 years prior to its official discovery observation.[11]

Physical characteristics

In the Tholen classification, Jean-Jacques is a metallic M-type asteroid.[1]

Rotation period

In March 2005, a rotational lightcurve of Jean-Jacques was obtained from photometric observations by Laurent Bernasconi and Horacio Correia. Lightcurve analysis gave a rotation period of 16.56 hours with a brightness variation of 0.09 in magnitude ({{{1}}}).[9]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Jean-Jacques measures between 25.33 and 41.43 kilometers in diameter and its surface has an albedo between 0.102 and 0.273.[5][6][7]

The Collaborative Asteroid Lightcurve Link adopts the results from IRAS, that is an albedo of 0.161 and a diameter of 32.94 kilometers with an absolute magnitude of 10.01.[3]

Naming

This minor planet was named after Jean-Jacques Laugier, the son of the discoverer.[2] The official naming citation was published by the Minor Planet Center on 31 January 1962 (M.P.C. 2116).[12]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "JPL Small-Body Database Browser: 1461 Jean-Jacques (1937 YL)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001461. Retrieved 25 July 2017. 
  2. ↑ 2.0 2.1 Schmadel, Lutz D. (2007). "(1461) Jean-Jacques". Dictionary of Minor Planet Names – (1461) Jean-Jacques. Springer Berlin Heidelberg. p. 117. doi:10.1007/978-3-540-29925-7_1462. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 "LCDB Data for (1461) Jean-Jacques". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1461%7CJean-Jacques. Retrieved 16 December 2016. 
  4. ↑ 4.0 4.1 4.2 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 16 December 2016. 
  5. ↑ 5.0 5.1 5.2 5.3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode: 2004PDSS...12.....T. https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab. Retrieved 22 October 2019. 
  6. ↑ 6.0 6.1 6.2 6.3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U.  (online, AcuA catalog p. 153)
  7. ↑ 7.0 7.1 7.2 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R. et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal 791 (2): 11. doi:10.1088/0004-637X/791/2/121. Bibcode: 2014ApJ...791..121M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M. Retrieved 16 December 2016. 
  8. ↑ 8.0 8.1 8.2 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. 
  9. ↑ 9.0 9.1 Behrend, Raoul. "Asteroids and comets rotation curves – (1461) Jean-Jacques". Geneva Observatory. http://obswww.unige.ch/~behrend/page4cou.html#001461. Retrieved 16 December 2016. 
  10. ↑ 10.0 10.1 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 16 December 2016. 
  11. ↑ 11.0 11.1 "1461 Jean-Jacques (1937 YL)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1461. Retrieved 16 December 2016. 
  12. ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7. https://archive.org/details/dictionaryminorp2008schm. 

External links



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