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词条 2023 Asaph
释义

  1. Orbit and classification

  2. Physical characterization

      Diameter and albedo  

  3. Naming

  4. Notes

  5. References

  6. External links

{{Infobox planet
| minorplanet = yes
| name = 2023 Asaph
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref =  
| discovered = 16 September 1952
| discoverer = Indiana University
{{nowrap|{{small|(Indiana Asteroid Program)}}}}
| discovery_site = Goethe Link Obs.
| mpc_name = (2023) Asaph
| alt_names = 1952 SA
| named_after = Asaph Hall
{{small|(American astronomer)}}[2]
| mp_category = main-belt{{·}}{{small|(outer)}}[3]
| orbit_ref =  
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 64.53 yr (23,571 days)
| aphelion = 3.6816 AU
| perihelion = 2.0703 AU
| semimajor = 2.8760 AU
| eccentricity = 0.2801
| period = 4.88 yr (1,781 days)
| mean_anomaly = 98.697°
| mean_motion = {{Deg2DMS|0.2021|sup=ms}} / day
| inclination = 22.352°
| asc_node = 3.1290°
| arg_peri = 357.53°
| dimensions = {{val|19.678|0.264}} km[5][6]
{{val|20.56|0.43}} km[7]
{{val|21.29|0.40}} km[8]
25.44 km {{small|(calculated)}}[3]
| rotation = {{val|3.87|0.02}} h[10]{{efn|name=lightcurve-plot-Warner}}
{{val|4.74|0.01}} h[11]
{{val|9.19|0.05}} h[12]
| albedo = 0.057 {{small|(assumed)}}[3]
{{val|0.090|0.004}}[8]
{{val|0.096|0.018}}[7][6]
{{val|0.1045|0.0204}}[5]
| spectral_type = C [3]
| abs_magnitude = 11.6[5][7][8]{{·}}11.7[3]
}}2023 Asaph, provisional designation {{mp|1952 SA}}, is a dark asteroid from the outer regions of the asteroid belt, approximately 21 kilometers in diameter.[7] It was discovered on 16 September 1952, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States.[25]

Orbit and classification

Asaph orbits the Sun in the outer main-belt at a distance of 2.1–3.7 AU once every 4 years and 11 months (1,781 days). Its orbit has an eccentricity of 0.28 and an inclination of 22° with respect to the ecliptic. The asteroid's observation arc begins with its official discovery observation Goethe Link.[25]

Physical characterization

In November 2001, a rotational lightcurve of Asaph was obtained from photometric observations by American astronomer Brian Warner. Lightcurve analysis gave a rotation period of 4.74 hours with a low brightness variation of 0.06 magnitude ({{small|U=2-}}).[11] Upon re-examination of the revised data set, Warner constructed a new, ambiguous lightcurve with two possible period solutions of {{val|3.87}} and {{val|6.28}} hours ({{small|U=2-}}).[10]{{efn|name=lightcurve-plot-Warner}} These observations supersede a period of 9.19 hours derived from two fragmentary lightcurves obtained in 2001 and 2006, respectively ({{small|U=1/1}}).[12]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Asaph measures between 19.678 and 21.29 kilometers in diameter and its surface has an albedo between 0.09 and 0.1045.[5][6][7][8]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and consequently calculates a larger diameter of 25.44 kilometers based on an absolute magnitude of 11.7.[3]

Naming

This minor planet was named in memory of American astronomer Asaph Hall (1829–1907), who discovered the Martian satellites, Phobos and Deimos.[2] The approved naming citation was published by the Minor Planet Center before November 1977 ({{small|M.P.C. 4238}}).[37]

Notes

{{notelist|refs={{efn|name=lightcurve-plot-Warner|1=Lightcurve plot of 2023 Asaph, Palmer Divide Observatory, Brian Warner (2001). The lightcurve is ambiguous with two possible period solutions of {{val|6.28|0.05}} and {{val|3.87|0.02}} hours.}}

}}

References

1. ^1 2 {{cite book |title = Dictionary of Minor Planet Names – (2023) Asaph |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 164 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_2024 |chapter = (2023) Asaph }}
2. ^1 2 {{cite web |title = 2023 Asaph (1952 SA) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=2023 |accessdate = 6 July 2017}}
3. ^1 {{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 6 July 2017}}
4. ^1 2 {{cite web |title = Asteroids and comets rotation curves – (2023) Asaph |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page4cou.html#002023 |accessdate = 6 July 2017}}
5. ^1 2 3 {{cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = A. K. |last2 = Mainzer |first3 = T. |last3 = Grav |first4 = J. M. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = J. |last6 = Dailey |first7 = P. R. M. |last7 = Eisenhardt |first8 = R. S. |last8 = McMillan |first9 = T. B. |last9 = Spahr |first10 = M. F. |last10 = Skrutskie |first11 = D. |last11 = Tholen |first12 = R. G. |last12 = Walker |first13 = E. L. |last13 = Wright |first14 = E. |last14 = DeBaun |first15 = D. |last15 = Elsbury |first16 = T., IV |last16 = Gautier |first17 = S. |last17 = Gomillion |first18 = A. |last18 = Wilkins |date = November 2011 |title = Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M |journal = The Astrophysical Journal |volume = 741 |issue = 2 |page = 20 |bibcode = 2011ApJ...741...68M |doi = 10.1088/0004-637X/741/2/68 |arxiv = 1109.4096 |access-date= 6 July 2017}}
6. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (2023) Asaph |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=2023%7CAsaph |accessdate = 6 July 2017}}
7. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = Fumihiko |last1 = Usui |first2 = Daisuke |last2 = Kuroda |first3 = Thomas G. |last3 = Müller |first4 = Sunao |last4 = Hasegawa |first5 = Masateru |last5 = Ishiguro |first6 = Takafumi |last6 = Ootsubo |first7 = Daisuke |last7 = Ishihara |first8 = Hirokazu |last8 = Kataza |first9 = Satoshi |last9 = Takita |first10 = Shinki |last10 = Oyabu |first11 = Munetaka |last11 = Ueno |first12 = Hideo |last12 = Matsuhara |first13 = Takashi |last13 = Onaka |date = October 2011 |title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey |url = http://pasj.oxfordjournals.org/content/63/5/1117.full.pdf+html |journal = Publications of the Astronomical Society of Japan |volume = 63 |issue = 5 |pages = 1117–1138 |bibcode = 2011PASJ...63.1117U |doi = 10.1093/pasj/63.5.1117 |access-date= 6 July 2017}}
8. ^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 |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 }}
9. ^1 2 3 4 5 {{cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = A. K. |last2 = Mainzer |first3 = T. |last3 = Grav |first4 = J. M. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = C. |last6 = Nugent |first7 = M. S. |last7 = Cabrera |date = November 2012 |title = Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M |journal = The Astrophysical Journal Letters |volume = 759 |issue = 1 |page = 5 |bibcode = 2012ApJ...759L...8M |doi = 10.1088/2041-8205/759/1/L8 |arxiv = 1209.5794 |access-date= 6 July 2017}}
10. ^1 2 {{Cite journal |author = Warner, Brian D. |date = September 2003 |title = Lightcurve analysis of asteroids 331, 795, 886, 1266, 2023, 3285, and 3431 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2003MPBu...30...61W |journal = The Minor Planet Bulletin |volume = 30 |issue = 3 |pages = 61–64 |issn = 1052-8091 |bibcode = 2003MPBu...30...61W |access-date= 6 July 2017}}
11. ^1 2 {{Cite journal |author = Warner, Brian D. |date = October 2010 |title = Upon Further Review: II. An Examination of Previous Lightcurve Analysis from the Palmer Divide Observatory |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2010MPBu...37..150W |journal = The Minor Planet Bulletin |volume = 37 |issue = 4 |pages = 150–151 |issn = 1052-8091 |bibcode = 2010MPBu...37..150W |access-date= 6 July 2017}}
[1][2][3][4][5][6][7][8][9][10][11]

}}

External links

  • 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 (1)-(5000) – Minor Planet Center
  • {{AstDys|2023}}
  • {{JPL small body}}
{{Minor planets navigator |2022 West |number=2023 |2024 McLaughlin}}{{Small Solar System bodies}}{{DEFAULTSORT:Asaph}}

5 : Background asteroids|Discoveries by Indiana University (Indiana Asteroid Program)|Minor planets named for people|Named minor planets|Astronomical objects discovered in 1952
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