1597 Laugier

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1597 Laugier
001597-asteroid shape model (1597) Laugier.png
Shape model of Laugier from its lightcurve
Discovery [1]
Discovered by L. Boyer
Discovery site Algiers Obs.
Discovery date7 March 1949
Designations
(1597) Laugier
Named after
 Marguerite Laugier
(French astronomer) [2]
1949 EB
main-belt  ·(outer) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 68.01 yr (24,840 days)
Aphelion 3.1024 AU
Perihelion 2.5869 AU
2.8446 AU
Eccentricity 0.0906
4.80 yr (1,752 days)
67.764°
0° 12m 19.44s / day
Inclination 11.812°
158.63°
52.042°
Physical characteristics
Dimensions12.885±0.169 [4]
24.30 km (calculated) [3]
8.0199 h [3]
8.02272 h [5]
0.057 (assumed) [3]
0.244±0.033 [4]
C [3]
11.7 [1]  ·11.8 [3]

    1597 Laugier, provisional designation 1949 EB, is an asteroid from the outer region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 7 March 1949, by French astronomer Louis Boyer at the north African Algiers Observatory in Algeria. [6] It was later named after French astronomer Marguerite Laugier. [2]

    Contents

    Orbit and classification

    This asteroid orbits the Sun in the outer main-belt at a distance of 2.6–3.1  AU once every 4 years and 10 months (1,752 days). Its orbit has an eccentricity of 0.09 and an inclination of 12° with respect to the ecliptic. [1] As no precoveries were taken and no prior identifications were made, Laugier's observation arc begins with its official discovery observation in 1949. [6]

    Physical characteristics

    Laugier is a presumed C-type asteroid [3]

    Lightcurves

    A rotational lightcurve for this asteroid from an unpublished source at the Asteroid Light Curve Database gave a well-defined rotation period of 8.020 hours with a brightness amplitude between 0.68 and 0.71 in magnitude ( U=3 ). [3] A similar period of 8.023 hours was previously obtained from remodeled data of the Lowell photometric database in March 2016. [1] [5]

    Diameter and albedo

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Laugier measures 12.9 kilometers in diameter and its surface has an albedo of 0.244, [4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057, and calculates a diameter of 24.3 kilometers based on an absolute magnitude of 11.8. [3]

    Naming

    This minor planet was named after French astronomer and asteroid discoverer Marguerite Laugier (1896–1976). The official naming citation was published by the Minor Planet Center on 1 August 1978 ( M.P.C. 4418). [7]

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    References

    1. 1 2 3 4 5 "JPL Small-Body Database Browser: 1597 Laugier (1949 EB)" (2017-03-10 last obs.). Jet Propulsion Laboratory . Retrieved 5 June 2017.
    2. 1 2 Schmadel, Lutz D. (2007). "(1597) Laugier". Dictionary of Minor Planet Names – (1597) Laugier. Springer Berlin Heidelberg. p. 126. doi:10.1007/978-3-540-29925-7_1598. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 7 8 9 "LCDB Data for (1597) Laugier". Asteroid Lightcurve Database (LCDB). Retrieved 20 July 2016.
    4. 1 2 3 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 8 December 2016.
    5. 1 2 Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv: 1601.02909 . Bibcode:2016A&A...587A..48D. doi:10.1051/0004-6361/201527573 . Retrieved 20 July 2016.
    6. 1 2 "1597 Laugier (1949 EB)". Minor Planet Center. Retrieved 20 July 2016.
    7. ↑ 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.
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