Astronomy:145523 Lulin
| Discovery[1] | |
|---|---|
| Discovered by | H.-C. Lin Q.-Z. Ye |
| Discovery site | Lulin Obs. |
| Discovery date | 7 March 2006 |
| Designations | |
| (145523) Lulin | |
| Named after | Lulin Mountains[1] (observatory site) |
| 2006 EM67 | |
| Minor planet category | main-belt[1][2] · (middle) background[3][4] |
| Orbital characteristics[2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 25.72 yr (9,396 d) |
| |{{{apsis}}}|helion}} | 3.2484 AU |
| |{{{apsis}}}|helion}} | 2.2468 AU |
| 2.7476 AU | |
| Eccentricity | 0.1823 |
| Orbital period | 4.55 yr (1,664 d) |
| Mean anomaly | 273.09° |
| Mean motion | 0° 12m 59.04s / day |
| Inclination | 10.867° |
| Longitude of ascending node | 345.22° |
| 273.12° | |
| Physical characteristics | |
| Mean diameter | 3.913±0.301 km[5] |
| Geometric albedo | 0.073±0.021[5] |
| Absolute magnitude (H) | 15.5[1][2] |
145523 Lulin, provisional designation 2006 EM67, is a background asteroid from the central region of the asteroid belt, approximately 3.9 kilometers (2.4 miles) in diameter. It was discovered on 7 March 2006, by Taiwanese astronomers Hung-Chin Lin (林宏欽) and Ye Quanzhi (葉泉志) at Lulin Observatory in central Taiwan.[1] It was named for the Lulin mountain and the observatory site.[1]
Orbit and classification
Lulin is a non-family asteroid from the main belt's background population.[3][4] It orbits the Sun in the central asteroid belt at a distance of 2.2–3.2 AU once every 4 years and 7 months (1,664 days; semi-major axis of 2.75 AU). Its orbit has an eccentricity of 0.18 and an inclination of 11° with respect to the ecliptic.[2] The earliest precovery was taken at ESO's La Silla Observatory in March 1992, extending the asteroid's observation arc by 14 years prior to its discovery observation.[1]
Naming
This minor planet was named after the Lulin mountain in central Taiwan, location of the discovering Lulin Observatory at an altitude of 2862 meters.[1] The official naming citation was published by the Minor Planet Center on 2 April 2007 (M.P.C. 59389).[6] At the observatory, Comet Lulin was discovered in 2007.
Physical characteristics
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 3.9 kilometers in diameter and its surface has a low albedo of 0.073,[5] which is rather typical for a carbonaceous C-type body. As of 2018, no rotational lightcurve of Lulin has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.[2][7]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "145523 Lulin (2006 EM67)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=145523.
- ↑ 2.0 2.1 2.2 2.3 2.4 "JPL Small-Body Database Browser: 145523 Lulin (2006 EM67)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2145523.
- ↑ 3.0 3.1 "Asteroid 145523 Lulin". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=145523+Lulin.
- ↑ 4.0 4.1 "Asteroid (145523) Lulin". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?n=145523&pc=1.1.6.
- ↑ 5.0 5.1 5.2 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. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 4 December 2018.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
- ↑ "LCDB Data for (145523) Lulin". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=145523%7CLulin.
External links
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (145001)-(150000) – Minor Planet Center
- 145523 Lulin at AstDyS-2, Asteroids—Dynamic Site
- 145523 Lulin at the JPL Small-Body Database
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