1461 Jean-Jacques

1461 Jean-Jacques
Discovery [1]
Discovered by M. Laugier
Discovery site Nice Observatory
Discovery date 30 December 1937
Designations
MPC designation 1461 Jean-Jacques
Named after
 Jean-Jacques Laugier
(son of discoverer)[2]
1937 YL · 1935 OH
1939 GH
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 80.70 yr (29476 days)
Aphelion 3.2757 AU (490.04 Gm)
Perihelion 2.9810 AU (445.95 Gm)
3.1283 AU (467.99 Gm)
Eccentricity 0.047117
5.53 yr (2021.0 d)
111.45°
0° 10m 41.268s / day
Inclination 15.307°
104.70°
336.12°
Earth MOID 2.00091 AU (299.332 Gm)
Jupiter MOID 1.90503 AU (284.988 Gm)
Jupiter Tisserand parameter 3.157
Physical characteristics
Dimensions 32.94 km[4]
33.75±1.40 km[5]
41.431±0.464 km[6]
25.33±1.04 km[7]
Mean radius
 16.47±0.7 km
16.56 h (0.690 d)[1][8]
0.1613[4]
0.168±0.017[5]
0.1022±0.0095[6]
0.273±0.043[7]
0.1613±0.014[1]
B–V = 0.715
U–B = 0.210
Tholen = M
M [3]
10.01

    1461 Jean-Jacques, provisional designation 1937 YL, is a metallic asteroid from the outer region of the asteroid belt, about 33 kilometers in diameter. It was discovered by French female astronomer Marguerite Laugier at Nice Observatory in southern France on 30 December 1937.[9]

    The metallic M-type asteroid orbits the Sun at a distance of 3.0–3.3 AU once every five and a half years (2,020 days). Its orbit shows an eccentricity of 0.05 and is tilted by 15 degrees to the plane of the ecliptic. It has a rotation period of 16.6 hours[8] and a geometric albedo of 0.10–0.27 according to the surveys carried out by IRAS, Akari, WISE and NEOWISE.[4][5][6][7]

    The minor planet was named after Jean-Jacques Laugier, the son of the discoverer.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1461 Jean-Jacques (1937 YL)" (2015-10-14 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1461) Jean-Jacques. Springer Berlin Heidelberg. p. 117. ISBN 978-3-540-29925-7. Retrieved 18 November 2015.
    3. 1 2 "LCDB Data for (1461) Jean-Jacques". Asteroid Lightcurve Database (LCDB). Retrieved 18 November 2015.
    4. 1 2 3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 18 November 2015.
    5. 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; 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. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 18 November 2015.
    6. 1 2 3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 18 November 2015.
    7. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; 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:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 18 November 2015.
    8. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1461) Jean-Jacques". Geneva Observatory. Retrieved 18 November 2015.
    9. ↑ "1461 Jean-Jacques (1937 YL)". Minor Planet Center. Retrieved 18 November 2015.

    External links


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