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]
| 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 | |
| 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) |
| Aphelion | 3.2484 AU |
| Perihelion | 2.2468 AU |
| 2.7476 AU | |
| Eccentricity | 0.1823 |
| 4.55 yr (1,664 d) | |
| 273.09° | |
| 0° 12m 59.04s / day | |
| Inclination | 10.867° |
| 345.22° | |
| 273.12° | |
| Physical characteristics | |
| 3.913±0.301 km[5] | |
| 0.073±0.021[5] | |
| 15.5[1][2] | |
Orbit and classification
editLulin 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
editThis 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
editAccording 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
edit- ^ a b c d e f g h "145523 Lulin (2006 EM67)". Minor Planet Center. Retrieved 4 December 2018.
- ^ a b c d e "JPL Small-Body Database Browser: 145523 Lulin (2006 EM67)" (2017-11-21 last obs.). Jet Propulsion Laboratory. Archived from the original on 5 March 2017. Retrieved 4 December 2018.
- ^ a b "Asteroid 145523 Lulin". Small Bodies Data Ferret. Retrieved 4 December 2018.
- ^ a b "Asteroid (145523) Lulin". AstDyS-2, Asteroids – Dynamic Site. Retrieved 4 December 2018.
- ^ 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 4 December 2018.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 December 2018.
- ^ "LCDB Data for (145523) Lulin". Asteroid Lightcurve Database (LCDB). Retrieved 4 December 2018.
External links
edit- 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
