1597 Laugier

1597 Laugier
Discovery [1]
Discovered by L. Boyer
Discovery site Algiers Obs.
Discovery date 7 March 1949
Designations
MPC designation (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
Dimensions 12.885±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]

    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    A rotational lightcurve for this asteroid from an unpublished source at the Asteroid Light Curve Database gave a well-defined rotation period of 8.020 hours with a brightness amplitude between 0.68 and 0.71 in magnitude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 an 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 before November 1977 (M.P.C. 4418).[7]

    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). Dictionary of Minor Planet Names – (1597) Laugier. Springer Berlin Heidelberg. p. 126. ISBN 978-3-540-00238-3. Retrieved 20 July 2016.
    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. Bibcode:2011ApJ...741...68M. arXiv:1109.4096 Freely accessible. 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. Bibcode:2016A&A...587A..48D. arXiv:1601.02909 Freely accessible. 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. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 20 July 2016.
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