145523 Lulin

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145523 Lulin
Discovery [1]
Discovered by H.-C. Lin
Q.-Z. Ye
Discovery site Lulin Obs.
Discovery date 7 March 2006
MPC designation (145523) Lulin
Named after
Lulin Mountains
(observatory site)[2]
2006 EM67
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 24.59 yr (8,983 days)
Aphelion 3.2488 AU
Perihelion 2.2490 AU
2.7489 AU
Eccentricity 0.1819
4.56 yr (1,665 days)
0° 12m 58.68s / day
Inclination 10.865°
Physical characteristics
Dimensions 3.913±0.301 km[3]
15.5[4] · 15.7[1]

145523 Lulin, provisional designation 2006 EM67, is an asteroid from the middle region of the asteroid belt, approximately 4 kilometers 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.[2]

Orbit and classification[edit]

The asteroid orbits the Sun in the central main-belt at a distance of 2.2–3.2 AU once every 4 years and 7 months (1,665 days). Its orbit has an eccentricity of 0.18 and an inclination of 11° with respect to the ecliptic.[1] The earliest precovery was taken at ESO's La Silla Observatory in 1992, extending the asteroid's observation arc by 14 years prior to its discovery observation.[2]

Physical characteristics[edit]

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,[3] which is rather typical for a carbonaceous C-type body. As of 2017, the asteroid's rotation period and shape remain unknown.[1][5]


This minor planet was named after the Lulin mountain in central Taiwan, location of the discovering Lulin Observatory at an altitude of 2862 meters.[2] The approved naming citation was published by the Minor Planet Center on 2 April 2007 (M.P.C. 59389).[6]


  1. ^ a b c d e "JPL Small-Body Database Browser: 145523 Lulin (2006 EM67)" (2016-10-04 last obs.). Jet Propulsion Laboratory. Retrieved 5 July 2017. 
  2. ^ a b c d "145523 Lulin (2006 EM67)". Minor Planet Center. Retrieved 24 September 2016. 
  3. ^ 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:1109.4096Freely accessible. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 24 September 2016. 
  4. ^ Tholen (2007). "Asteroid Absolute Magnitudes". EAR-A-5-DDR-ASTERMAG-V11.0. Planetary Data System. Retrieved 5 July 2017. 
  5. ^ "LCDB Data for (145523) Lulin". Asteroid Lightcurve Database (LCDB). Retrieved 5 July 2017. 
  6. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 September 2016. 

External links[edit]