(467336) 2002 LT38

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(467336) 2002 LT38
Discovery [1][2]
Discovered by LINEAR
Discovery site Lincoln Lab's ETS
Discovery date 12 June 2002
Designations
MPC designation (467336) 2002 LT38
2002 LT38
NEO · Aten · PHA[1][2]  
Orbital characteristics[1]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 14.09 yr (5,148 days)
Aphelion 1.1103 AU
Perihelion 0.5799 AU
0.8451 AU
Eccentricity 0.3138
0.78 yr (284 days)
316.03°
1° 16m 7.32s / day
Inclination 6.1959°
259.41°
162.73°
Earth MOID 0.0344 AU (13.4 LD)
Physical characteristics
Dimensions 0.236 km (calculated)[3]
0.240 km (est. at 0.20)[4]
21.80±0.05 h[5][a]
0.20 (assumed)[3]
S (assumed)[3]
20.5[1][3]

(467336) 2002 LT38, is a sub-kilometer asteroid and suspected tumbler, classified as a near-Earth object and potentially hazardous asteroid of the Aten group, approximately 240 meters (790 ft) in diameter. It was discovered on 12 June 2002, by astronomers of the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States.[2]

Orbit and classification[edit]

2002 LT38 orbits the Sun at a distance of 0.6–1.1 AU once every 9 months (284 days; semi-major axis of 0.85 AU). Its orbit has an eccentricity of 0.31 and an inclination of 6° with respect to the ecliptic.[1]

The body's observation arc begins with a precovery taken at AMOS on 10 June 2002, two nights prior to its official discovery observation at Lincoln Lab's ETS.[2]

Close approaches[edit]

2002 LT38 has an Earth minimum orbital intersection distance of 0.0344 AU (5,150,000 km) which corresponds to 13.4 lunar distances.[1] It will pass at that distance during its close encounter with Earth on 27 June 2030.[1]

Physical characteristics[edit]

The asteroid is an assumed stony S-type asteroid.[3]

Rotation period[edit]

In July 2016, a first rotational lightcurve of 2002 LT38 was obtained from photometric observations by American astronomer Brian Warner at his Palmer Divide Station in California (U82). Lightcurve analysis gave a longer-than average rotation period of 21.80 hours with a brightness variation of 1.16 magnitude (U=2+).[5][a] A high brightness amplitude typically indicates that the body has a non-spherical, elongated shape, it is also a suspected tumbler.[5]

Diameter and albedo[edit]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 0.236 kilometers based on an absolute magnitude of 20.5.[3]

Numbering and naming[edit]

This minor planet was numbered by the Minor Planet Center on 21 May 2016, after its orbit determination became sufficiently secure (M.P.C. 100286).[6] As of 2018, it has not been named.[2]

Notes[edit]

  1. ^ a b Lightcurve plot of (467336) 2002 LT38 by Brian Warner, Palmer Divide Station, California (2016). Rotation period 21.80±0.05 hours with a brightness amplitude of 1.16±0.05 mag. Quality Code of 2+. Summary figures at the LCDB. Observers comment: "There may be some indications of tumbling in the lightcurve, for example, the 'break' in the Fourier curve around 0.45 rotation phase".

References[edit]

  1. ^ a b c d e f g "JPL Small-Body Database Browser: 467336 (2002 LT38)" (2016-07-14 last obs.). Jet Propulsion Laboratory. Retrieved 27 February 2018. 
  2. ^ a b c d e "467336 (2002 LT38)". Minor Planet Center. Retrieved 27 February 2018. 
  3. ^ a b c d e f "LCDB Data for (467336)". Asteroid Lightcurve Database (LCDB). Retrieved 23 November 2017. 
  4. ^ "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 12 November 2017. 
  5. ^ a b c Warner, Brian D. (January 2017). "Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2016 July-September". The Minor Planet Bulletin. 44 (1): 22–36. Bibcode:2017MPBu...44...22W. ISSN 1052-8091. Retrieved 23 November 2017. 
  6. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 23 November 2017. 

External links[edit]