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词条 (6382) 1988 EL
释义

  1. Orbit and classification

  2. Rotation period

  3. Diameter and albedo

  4. Naming

  5. References

  6. External links

{{Infobox planet
| minorplanet = yes
| name = (6382) 1988 EL
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref =  
| discovered = 14 March 1988
| discoverer = J. Alu
| discovery_site = Palomar Obs.
| mpc_name = (6382) 1988 EL
| alt_names = 1988 EL{{·}}{{mp|1983 EC|1}}
| pronounced =
| named_after =
| mp_category = main-belt{{·}}{{small|(inner)}} 
Hungaria [3][4]
| orbit_ref =  
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 29.01 yr (10,596 days)
| aphelion = 1.9102 AU
| perihelion = 1.7388 AU
| semimajor = 1.8245 AU
| eccentricity = 0.0470
| period = 2.46 yr (900 days)
| mean_anomaly = 349.44°
| mean_motion = {{Deg2DMS|0.3999|sup=ms}} / day
| inclination = 18.556°
| asc_node = 350.60°
| arg_peri = 191.91°
| dimensions = 4.22 km {{small|(calculated)}}[4]
{{val|4.931|0.042}} km[8]
{{val|5.311|0.013}} km[9]
| rotation = {{val|2.892|0.005}} h[10]
{{val|2.8932|0.0005}} h[11]
{{val|2.894|0.001}} h[12]
{{val|2.895|0.002}} h[13]
{{val|2.898|0.001}} h[14]
| albedo = {{val|0.1896|0.0604}}[9]
{{val|0.254|0.035}}[8]
0.3 {{small|(assumed)}}[4]
| spectral_type = E [4]{{·}}S [12]
| abs_magnitude = 13.8[4][9]{{·}}{{val|14.08|0.49}}[24]
}}{{mp|(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.[3]

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 interloper, which intruded into the Hungaria orbital space, as indicated by a lower albedos from observations by the NEOWISE mission.[11]{{rp|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. The body's first yet unused observation was made at the Chinese Purple Mountain Observatory in 1983.[3] On 13 April 2042 and on 3 October 2113, the asteroid will pass {{convert|0.086|AU|km|abbr=on|lk=off}} and {{convert|0.092|AU|km|abbr=on}} from Mars, respectively.

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 ({{small|U=2/3-/3/2+/3}}).[10][11][12][13][14]

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,[9][8] 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.[4]

Naming

As of 2017, {{mp|1988 EL}} remains unnamed.[3]

References

1. ^1 2 3 4 {{cite web |title = 6382 (1988 EL) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=6382 |accessdate = 31 August 2016}}
2. ^1 2 3 {{Cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = T. |last2 = Grav |first3 = A. K. |last3 = Mainzer |first4 = C. R. |last4 = Nugent |first5 = J. M. |last5 = Bauer |first6 = R. |last6 = Stevenson |first7 = S. |last7 = Sonnett |date = August 2014 |title = Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M |journal = The Astrophysical Journal |volume = 791 |issue = 2 |page = 11 |bibcode = 2014ApJ...791..121M |doi = 10.1088/0004-637X/791/2/121 |arxiv = 1406.6645 |access-date= 31 August 2016}}
3. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (6382) |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=6382%7C |accessdate = 31 August 2016}}
4. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = A. |last1 = Mainzer |first2 = T. |last2 = Grav |first3 = J. |last3 = Masiero |first4 = E. |last4 = Hand |first5 = J. |last5 = Bauer |first6 = D. |last6 = Tholen |first7 = R. S. |last7 = McMillan |first8 = T. |last8 = Spahr |first9 = R. M. |last9 = Cutri |first10 = E. |last10 = Wright |first11 = J. |last11 = Watkins |first12 = W. |last12 = Mo |first13 = C. |last13 = Maleszewski |date = November 2011 |title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results |url = https://arxiv.org/pdf/1109.6407v1.pdf |journal = The Astrophysical Journal |volume = 741 |issue = 2 |page = 25 |bibcode = 2011ApJ...741...90M |doi = 10.1088/0004-637X/741/2/90 |arxiv = 1109.6407 |access-date= 31 August 2016}}
5. ^1 2 {{Cite journal |author = Warner, Brian D. |date = September 2005 |title = Asteroid lightcurve analysis at the Palmer Divide Observatory - winter 2004-2005 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2005MPBu...32...54W |journal = The Minor Planet Bulletin |volume = 32 |issue = 3 |pages = 54–58 |issn = 1052-8091 |bibcode = 2005MPBu...32...54W |access-date= 31 August 2016}}
6. ^1 2 {{Cite journal |author = Warner, Brian D. |date = March 2007 |title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June-September 2006 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2007MPBu...34....8W |journal = The Minor Planet Bulletin |volume = 34 |issue = 1 |pages = 8–10 |issn = 1052-8091 |bibcode = 2007MPBu...34....8W |access-date= 31 August 2016}}
7. ^1 2 {{Cite journal |author = Warner, Brian D. |date = July 2010 |title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2009 December - 2010 March |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2010MPBu...37..112W |journal = The Minor Planet Bulletin |volume = 37 |issue = 3 |pages = 112–118 |issn = 1052-8091 |bibcode = 2010MPBu...37..112W |access-date= 31 August 2016}}
8. ^1 2 3 {{Cite journal |author = Warner, Brian D. |date = April 2012 |title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2011 September - December |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39...69W |journal = The Minor Planet Bulletin |volume = 39 |issue = 2 |pages = 69–80 |issn = 1052-8091 |bibcode = 2012MPBu...39...69W |access-date= 31 August 2016}}
9. ^1 2 3 {{Cite journal |author = Warner, Brian D. |date = July 2015 |title = Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 December - 2015 March |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015MPBu...42..167W |journal = The Minor Planet Bulletin |volume = 42 |issue = 3 |pages = 167–172 |issn = 1052-8091 |bibcode = 2015MPBu...42..167W |access-date= 31 August 2016}}
10. ^1 {{cite journal |display-authors = 6 |first1 = Peter |last1 = Veres |first2 = Robert |last2 = Jedicke |first3 = Alan |last3 = Fitzsimmons |first4 = Larry |last4 = Denneau |first5 = Mikael |last5 = Granvik |first6 = Bryce |last6 = Bolin |first7 = Serge |last7 = Chastel |first8 = Richard J. |last8 = Wainscoat |first9 = William S. |last9 = Burgett |first10 = Kenneth C. |last10 = Chambers |first11 = Heather |last11 = Flewelling |first12 = Nick |last12 = Kaiser |first13 = Eugen A. |last13 = Magnier |first14 = Jeff S. |last14 = Morgan |first15 = Paul A. |last15 = Price |first16 = John L. |last16 = Tonry |first17 = Christopher |last17 = Waters |date = November 2015 |title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V |journal = Icarus |volume = 261 |pages = 34–47 |bibcode = 2015Icar..261...34V |doi = 10.1016/j.icarus.2015.08.007 |arxiv = 1506.00762 |access-date= 31 August 2016}}
[1][2][3][4][5][6][7][8][9][10]

}}

External links

  • Lightcurve plot of (6382) 1988 EL, Palmer Divide Observatory, B. D. Warner (2011)
  • Asteroid Lightcurve Database (LCDB), query form (info)
  • [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
  • Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
  • Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
  • {{JPL small body}}
{{Minor planets navigator|6381 Toyama|number=6382|6383 Tokushima}}{{Small Solar System bodies}}{{DEFAULTSORT:1988 EL}}

3 : Hungaria asteroids|Discoveries by Jeff T. Alu|Astronomical objects discovered in 1988
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