(6382) 1988 EL

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(6382) 1988 EL
Discovery[1]
Discovered byJ. Alu
Discovery sitePalomar Obs.
Discovery date14 March 1988
Designations
(6382) 1988 EL
1988 EL · 1983 EC1
Minor planet category
main-belt · (inner)[1]
Hungaria[2][3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc29.01 yr (10,596 days)
Aphelion1.9102 AU
Perihelion1.7388 AU
1.8245 AU
Eccentricity0.0470
2.46 yr (900 days)
349.44°
0° 23m 59.64s / day
Inclination18.556°
350.60°
191.91°
Physical characteristics
Dimensions4.22 km (calculated)[3]
4.931±0.042 km[1][4]
5.311±0.013 km[5]
2.892±0.005 h[6]
2.8932±0.0005 h[7]
2.894±0.001 h[8]
2.895±0.002 h[9]
2.898±0.001 h[10]
0.1896±0.0604[5]
0.254±0.035[1][4]
0.3 (assumed)[3]
E[3] · S[8]
Absolute magnitude (H)
13.8[1][3][5] · 14.08±0.49[11]

(6382) 1988 EL, is a stony Hungaria asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 14 March 1988, by American astronomer Jeffrey Alu at the U.S. Palomar Observatory, California.[2]

Orbit and classification[]

The presumed E-type asteroid may not be a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System, but an unrelated , which intruded into the Hungaria orbital space, as indicated by a lower albedos from observations by the NEOWISE mission.[7]: 169  It orbits the Sun at a distance of 1.7–1.9 AU once every 2 years and 6 months (900 days). Its orbit has an eccentricity of 0.05 and an inclination of 19° with respect to the ecliptic.[1] The body's first yet unused observation was made at the Chinese Purple Mountain Observatory in 1983.[2] On 13 April 2042 and on 3 October 2113, the asteroid will pass 0.086 AU (12,900,000 km) and 0.092 AU (13,800,000 km) from Mars, respectively.[1]

Rotation period[]

Between February 2005 and January 2015, American astronomer Brian D. Warner obtained 5 rotational lightcurves for this asteroid from photometric observations at the CS3–Palmer Divide Station in Colorado. The lightcurves gave a well-defined rotation period of 2.892–2.898 hours with a low brightness variation between 0.06 and 0.15 magnitude (U=2/3-/3/2+/3).[6][7][8][9][10]

Diameter and albedo[]

According to two different data sets from space-based survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 4.9 and 5.3 kilometers in diameter and its surface has an albedo of 0.19 and 0.25, respectively,[5][4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.30 – a compromise value between 0.4 and 0.2, corresponding to the Hungaria asteroids as collisional family and orbital group, respectively – and calculates a smaller diameter of 4.2 kilometers, based on an absolute magnitude of 13.8.[3]

Naming[]

As of 2017, 1988 EL remains unnamed.[2]

References[]

  1. ^ Jump up to: a b c d e f g h "JPL Small-Body Database Browser: 6382 (1988 EL)" (2017-03-18 last obs.). Jet Propulsion Laboratory. Archived from the original on 16 December 2019. Retrieved 26 May 2017.
  2. ^ Jump up to: a b c d "6382 (1988 EL)". Minor Planet Center. Retrieved 31 August 2016.
  3. ^ Jump up to: a b c d e f "LCDB Data for (6382)". Asteroid Lightcurve Database (LCDB). Retrieved 31 August 2016.
  4. ^ Jump up to: a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121.
  5. ^ Jump up to: a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
  6. ^ Jump up to: a b Warner, Brian D. (July 2010). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2009 December - 2010 March". The Minor Planet Bulletin. 37 (3): 112–118. Bibcode:2010MPBu...37..112W. ISSN 1052-8091.
  7. ^ Jump up to: a b c Warner, Brian D. (July 2015). "Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 December - 2015 March". The Minor Planet Bulletin. 42 (3): 167–172. Bibcode:2015MPBu...42..167W. ISSN 1052-8091.
  8. ^ Jump up to: a b c Warner, Brian D. (April 2012). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2011 September - December". The Minor Planet Bulletin. 39 (2): 69–80. Bibcode:2012MPBu...39...69W. ISSN 1052-8091.
  9. ^ Jump up to: a b Warner, Brian D. (September 2005). "Asteroid lightcurve analysis at the Palmer Divide Observatory - winter 2004-2005". The Minor Planet Bulletin. 32 (3): 54–58. Bibcode:2005MPBu...32...54W. ISSN 1052-8091.
  10. ^ Jump up to: a b Warner, Brian D. (March 2007). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June-September 2006". The Minor Planet Bulletin. 34 (1): 8–10. Bibcode:2007MPBu...34....8W. ISSN 1052-8091.
  11. ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007.

External links[]

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