“9971 Ishihara”的意思、由来-开放百科全书

In January 2012, a rotational lightcurve of Ishihara was obtained from photometric observations by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 6.715 hours with a brightness amplitude of 1.06 in magnitude, which indicates that the body has a non-spheroidal shape ({{small|U=2}}).^[8]

A 2016-published lightcurve, using modeled photometric data from the Lowell Photometric Database (LPD), gave a concurring period of 6.71574 hours ({{small|U=n.a.}}), as well as a spin axis of (42.0°, 76.0°) in ecliptic coordinates (λ, β).^[9]

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Ishihara measures 4.986 and 5.012 kilometers in diameter and its surface has an albedo of 0.235 and 0.2328, respectively.^[6]^[7] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, a S-type asteroid and the family's largest member and namesake – and calculates a diameter of 3.74 kilometers with an absolute magnitude of 14.3.^[3]

Naming

This minor planet was named after Takahiro Ishihara (born 1961), an observer of comets, communicator of astronomy, and former president of the astronomical society at Hiroshima (1987–1997).^[2] The official naming citation was published by the Minor Planet Center on 6 January 2003 ({{small|M.P.C. 47298}}).^[29]

References

1. ^¹²³{{cite book |title = Dictionary of Minor Planet Names – (9971) Ishihara, Addendum to Fifth Edition: 2003–2005 |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 49 |date = 2006 |isbn = 978-3-540-34361-5 |doi = 10.1007/978-3-540-34361-5_391 |chapter = (9971) Ishihara [2.18, 0.12, 2.7] }}
2. ^¹²{{cite web |title = 9971 Ishihara (1993 HS) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=9971 |accessdate = 10 April 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 = 10 April 2017}}
4. ^¹²³{{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= 10 April 2017}}
5. ^¹²³⁴⁵⁶{{cite web |title = LCDB Data for (9971) Ishihara |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=9971%7CIshihara |accessdate = 10 April 2017}}
6. ^¹²³⁴{{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 }}
7. ^¹²{{cite journal |first1 = J. |last1 = Durech |first2 = J. |last2 = Hanus |first3 = D. |last3 = Oszkiewicz |first4 = R. |last4 = Vanco |date = March 2016 |title = Asteroid models from the Lowell photometric database |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D |journal = Astronomy and Astrophysics |volume = 587 |page = 6 |bibcode = 2016A&A...587A..48D |doi = 10.1051/0004-6361/201527573 |arxiv = 1601.02909 |access-date= 10 April 2017}}
8. ^¹²³{{cite journal |display-authors = 6 |first1 = Adam |last1 = Waszczak |first2 = Chan-Kao |last2 = Chang |first3 = Eran O. |last3 = Ofek |first4 = Russ |last4 = Laher |first5 = Frank |last5 = Masci |first6 = David |last6 = Levitan |first7 = Jason |last7 = Surace |first8 = Yu-Chi |last8 = Cheng |first9 = Wing-Huen |last9 = Ip |first10 = Daisuke |last10 = Kinoshita |first11 = George |last11 = Helou |first12 = Thomas A. |last12 = Prince |first13 = Shrinivas |last13 = Kulkarni |date = September 2015 |title = Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W |journal = The Astronomical Journal |volume = 150 |issue = 3 |page = 35 |bibcode = 2015AJ....150...75W |doi = 10.1088/0004-6256/150/3/75 |arxiv = 1504.04041 |access-date= 10 April 2017}}
9. ^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= 10 April 2017}}

词条	9971 Ishihara
释义	Orbit and classification Physical characteristics Rotation and poles Diameter and albedo Naming References External links {{short description\|Asteroid}}{{Infobox planet \| minorplanet = yes \| name = 9971 Ishihara \| background = #D6D6D6 \| image = AnimatedOrbitOf9971Ishihara.gif \| image_size = 180 \| caption = {{longitem\|Orbit of Ishihara (blue), inner planets and Jupiter (outermost)}} \| discovery_ref = \| discovered = 16 April 1993 \| discoverer = K. Endate K. Watanabe \| discovery_site = Kitami Observatory \| mpc_name = (9971) Ishihara \| alt_names = 1993 HS{{·}}{{mp\|1991 YC\|2}} {{mp\|1996 EU\|1}} \| pronounced = \| named_after = Takahiro Ishihara {{small\|(Japanese astronomer)}}^[2] \| mp_category = main-belt{{·}}Flora ^[3] \| orbit_ref = \| epoch = 4 September 2017 (JD 2458000.5) \| uncertainty = 0 \| observation_arc = 24.91 yr (9,097 days) \| aphelion = 2.4465 AU \| perihelion = 1.9164 AU \| semimajor = 2.1814 AU \| eccentricity = 0.1215 \| period = 3.22 yr (1,177 days) \| mean_anomaly = 158.69° \| mean_motion = {{Deg2DMS\|0.3059\|sup=ms}} / day \| inclination = 2.7482° \| asc_node = 20.550° \| arg_peri = 246.01° \| dimensions = 3.74 km {{small\|(calculated)}}^[3] {{val\|4.986\|0.053}} km^[6] {{val\|5.012\|0.069}} km^[7] \| rotation = {{val\|6.715\|0.0036}} h^[8] {{val\|6.71574\|0.00001}} h^[9] \| albedo = {{val\|0.2328\|0.0281}}^[7] {{val\|0.235\|0.027}}^[6] 0.24 {{small\|(assumed)}}^[3] \| spectral_type = S ^[3] \| abs_magnitude = 13.7^[7]{{·}}13.9{{·}}{{val\|13.852\|0.006}} {{small\|(R)}}^[8]{{·}}{{val\|14.26\|0.22}}^[17]{{·}}14.3^[3] }}9971 Ishihara, provisional designation {{mp\|1993 HS}}, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 4 to 5 kilometers in diameter. It was discovered by Japanese amateur astronomers Kin Endate and Kazuro Watanabe at Kitami Observatory on 16 April 1993,^[19] and named after Takahiro Ishihara, president of the astronomical society at Hiroshima.^[2] Orbit and classification Ishihara is a member of the Flora family, one of the largest families of stony asteroids in the asteroid belt. It orbits the Sun in the inner main-belt at a distance of 1.9–2.4 AU once every 3 years and 3 months (1,177 days). Its orbit has an eccentricity of 0.12 and an inclination of 3° with respect to the ecliptic. It was first identified as {{mp\|1991 YC\|2}} at Karl Schwarzschild Observatory in 1991, extending the body's observation arc by approximately 2 years prior to its official discovery at Kitami.^[19] Physical characteristics Rotation and poles In January 2012, a rotational lightcurve of Ishihara was obtained from photometric observations by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 6.715 hours with a brightness amplitude of 1.06 in magnitude, which indicates that the body has a non-spheroidal shape ({{small\|U=2}}).^[8] A 2016-published lightcurve, using modeled photometric data from the Lowell Photometric Database (LPD), gave a concurring period of 6.71574 hours ({{small\|U=n.a.}}), as well as a spin axis of (42.0°, 76.0°) in ecliptic coordinates (λ, β).^[9] Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Ishihara measures 4.986 and 5.012 kilometers in diameter and its surface has an albedo of 0.235 and 0.2328, respectively.^[6]^[7] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, a S-type asteroid and the family's largest member and namesake – and calculates a diameter of 3.74 kilometers with an absolute magnitude of 14.3.^[3] Naming This minor planet was named after Takahiro Ishihara (born 1961), an observer of comets, communicator of astronomy, and former president of the astronomical society at Hiroshima (1987–1997).^[2] The official naming citation was published by the Minor Planet Center on 6 January 2003 ({{small\|M.P.C. 47298}}).^[29] References 1. ^¹²³{{cite book \|title = Dictionary of Minor Planet Names – (9971) Ishihara, Addendum to Fifth Edition: 2003–2005 \|last = Schmadel \| first = Lutz D. \|publisher = Springer Berlin Heidelberg \|page = 49 \|date = 2006 \|isbn = 978-3-540-34361-5 \|doi = 10.1007/978-3-540-34361-5_391 \|chapter = (9971) Ishihara [2.18, 0.12, 2.7] }} 2. ^¹²{{cite web \|title = 9971 Ishihara (1993 HS) \|work = Minor Planet Center \|url = http://www.minorplanetcenter.net/db_search/show_object?object_id=9971 \|accessdate = 10 April 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 = 10 April 2017}} 4. ^¹²³{{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= 10 April 2017}} 5. ^¹²³⁴⁵⁶{{cite web \|title = LCDB Data for (9971) Ishihara \|publisher = Asteroid Lightcurve Database (LCDB) \|url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=9971%7CIshihara \|accessdate = 10 April 2017}} 6. ^¹²³⁴{{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 }} 7. ^¹²{{cite journal \|first1 = J. \|last1 = Durech \|first2 = J. \|last2 = Hanus \|first3 = D. \|last3 = Oszkiewicz \|first4 = R. \|last4 = Vanco \|date = March 2016 \|title = Asteroid models from the Lowell photometric database \|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D \|journal = Astronomy and Astrophysics \|volume = 587 \|page = 6 \|bibcode = 2016A&A...587A..48D \|doi = 10.1051/0004-6361/201527573 \|arxiv = 1601.02909 \|access-date= 10 April 2017}} 8. ^¹²³{{cite journal \|display-authors = 6 \|first1 = Adam \|last1 = Waszczak \|first2 = Chan-Kao \|last2 = Chang \|first3 = Eran O. \|last3 = Ofek \|first4 = Russ \|last4 = Laher \|first5 = Frank \|last5 = Masci \|first6 = David \|last6 = Levitan \|first7 = Jason \|last7 = Surace \|first8 = Yu-Chi \|last8 = Cheng \|first9 = Wing-Huen \|last9 = Ip \|first10 = Daisuke \|last10 = Kinoshita \|first11 = George \|last11 = Helou \|first12 = Thomas A. \|last12 = Prince \|first13 = Shrinivas \|last13 = Kulkarni \|date = September 2015 \|title = Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry \|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W \|journal = The Astronomical Journal \|volume = 150 \|issue = 3 \|page = 35 \|bibcode = 2015AJ....150...75W \|doi = 10.1088/0004-6256/150/3/75 \|arxiv = 1504.04041 \|access-date= 10 April 2017}} 9. ^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= 10 April 2017}} ^[1]^[2]^[3]^[4]^[5]^[6]^[7]^[8]^[9] }} 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 (5001)-(10000) – Minor Planet Center {{JPL small body}} {{Minor planets navigator\|(9970) 1992 ST1\|number=9971\|9972 Minoruoda}}{{Small Solar System bodies}}{{DEFAULTSORT:Ishihara}} 6 : Flora asteroids\|Discoveries by Kazuro Watanabe\|Discoveries by Kin Endate\|Minor planets named for people\|Named minor planets\|Astronomical objects discovered in 1993
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Orbit and classification

Physical characteristics

Rotation and poles

Diameter and albedo

Naming

References

External links