1741 Giclas

1741 Giclas
Discovery [1]
Discovered by Indiana Asteroid Program
Discovery site Goethe Link Obs.
Discovery date 26 January 1960
Designations
MPC designation 1741 Giclas
Named after
 Henry Giclas
(astronomer) [2]
1960 BC · 1953 UY
1953 VH1 · 1953 XN
1963 YD
main-belt · Koronis [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 61.83 yr (22585 days)
Aphelion 3.0874 AU (461.87 Gm)
Perihelion 2.6804 AU (400.98 Gm)
2.8839 AU (431.43 Gm)
Eccentricity 0.070556
4.90 yr (1788.8 d)
256.72°
0° 12m 4.5s / day
Inclination 2.8877°
55.519°
339.13°
Earth MOID 1.68556 AU (252.156 Gm)
Jupiter MOID 2.23883 AU (334.924 Gm)
Jupiter Tisserand parameter 3.288
Physical characteristics
Dimensions 15.06±1.04 km [4]
12.501±0.245 km [5]
13.11±0.18 km [6]
13.60 km (caculated) [3]
2.943 h (0.1226 d) [1][7]
2.92±0.02 h [8]
2.938±0.001 h [9]
0.265±0.039 [4]
0.3742±0.0483 [5]
0.260±0.049 [6]
0.24 (assumed) [3]
S [3]
11.5

    1741 Giclas, provisional designation 1960 BC, is a stony asteroid from the outer region of the asteroid belt, about 14 kilometers in diameter. It was discovered by the Indiana Asteroid Program at the U.S. Goethe Link Observatory near Brooklyn, Indiana, on 26 January 1960.[10]

    The S-type asteroid is a member of the Koronis family, a group consisting of about 200 known bodies. It orbits the Sun at a distance of 2.7–3.1 AU once every 4 years and 11 months (1,788 days). Its orbit shows an eccentricity of 0.07 and is tilted by 3 degrees to the plane of the ecliptic. It has a rotation period of 2.9 hours[7][8][9] and an albedo of about 0.26, based on observations carried out by the space-based Akari and WISE missions.[4][5]

    It was named in honour of American astronomer Henry Lee Giclas (1910–2007), longtime staff member of the Lowell Observatory in Flagstaff, Arizona, where he discovered 17 minor planets and the comet 84P/Giclas. Giclas responsibility included the programs of minor planet positions and stellar proper motions, using the 13-inch Lawrence Lowell Telescope.[2]

    References

    1. 1 2 3 "JPL Small-Body Database Browser: 1741 Giclas (1960 BC)" (2015-08-14 last obs.). Jet Propulsion Laboratory. Retrieved 21 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1741) Giclas. Springer Berlin Heidelberg. p. 138. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 "LCDB Data for (1741) Giclas". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 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. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved November 2015.
    5. 1 2 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved November 2015.
    6. 1 2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S. (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 November 2015.
    7. 1 2 Slivan, Stephen M.; Binzel, Richard P.; Boroumand, Shaida C.; Pan, Margaret W.; Simpson, Christine M.; Tanabe, James T.; et al. (May 2008). "Rotation rates in the Koronis family, complete to H≈11.2". Icarus 195 (1): 226–276. Bibcode:2008Icar..195..226S. doi:10.1016/j.icarus.2007.11.019. Retrieved November 2015.
    8. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1741) Giclas". Geneva Observatory. Retrieved November 2015.
    9. 1 2 Warner, Brian D. (June 2008). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: September-December 2007". The Minor Planet Bulletin 35 (2): 67–71. Bibcode:2008MPBu...35...67W. ISSN 1052-8091. Retrieved November 2015.
    10. ↑ "1741 Giclas (1960 BC)". Minor Planet Center. Retrieved November 2015.

    External links


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