_Laugier.png) Shape model of Laugier from its
lightcurve | |
| Discovery [1] | |
|---|---|
| Discovered by | L. Boyer |
| Discovery site | Algiers Obs. |
| Discovery date | 7 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 | |
| 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A rotational lightcurve for this asteroid from an unpublished source at the Asteroid Light Curve Database gave a well-defined rotation period of 8.020 hours with a brightness amplitude between 0.68 and 0.71 in magnitude (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 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]
References
- ^ a b c d e "JPL Small-Body Database Browser: 1597 Laugier (1949 EB)" (2017-03-10 last obs.). Jet Propulsion Laboratory. Retrieved 5 June 2017.
- ^ a b 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.
- ^ a b c d e f g h i "LCDB Data for (1597) Laugier". Asteroid Lightcurve Database (LCDB). Retrieved 20 July 2016.
- ^ a b c 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.
- ^ a b 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.
- ^ a b "1597 Laugier (1949 EB)". Minor Planet Center. Retrieved 20 July 2016.
- ^ 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.
External links
- Asteroid Lightcurve Database (LCDB), query form ( info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1597 Laugier at AstDyS-2, Asteroids—Dynamic Site
- 1597 Laugier at the JPL Small-Body Database
