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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. It was named for the Lulin mountain and the observatory site.

Orbit and classification

Lulin is a non-family asteroid from the main belt's background population. 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. 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.

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. The official naming citation was published by the Minor Planet Center on 2 April 2007 (M.P.C. 59389). 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, 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.

References

1. ^ "145523 Lulin (2006 EM67)". Minor Planet Center. Retrieved 4 December 2018.
2. ^ "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.
3. ^ "Asteroid 145523 Lulin". Small Bodies Data Ferret. Retrieved 4 December 2018.
4. ^ "Asteroid (145523) Lulin". AstDyS-2, Asteroids – Dynamic Site. Retrieved 4 December 2018.
5. ^ 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.
6. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 December 2018.
7. "LCDB Data for (145523) Lulin". Asteroid Lightcurve Database (LCDB). Retrieved 4 December 2018.

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
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 145523 Lulin at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

• Minor planet object articles (numbered)
• Background asteroids
• Discoveries by Hung-Chin Lin
• Discoveries by Quanzhi Ye
• Named minor planets
• Astronomical objects discovered in 2006