“1451 Granö”的意思、由来-开放百科全书

The asteroid is a member of the Flora family, a large group of stony S-type asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 1.9–2.5 AU once every 3 years and 3 months (1,194 days). Its orbit has an eccentricity of 0.12 and an inclination of 5° with respect to the ecliptic. As no precoveries were taken, and no previous identifications were made, Granö{{'}}s observation arc begins with its official discovery observation in 1938.^[21]

Physical characteristics

Slow rotator

A rotational lightcurve of Granö was obtained from photometric observations made by amateur astronomer Robert Stephens at GMARS and Santana Observatories in March 2010. Analysis gave a long rotation period of 138 hours with a brightness variation of 0.65 magnitude ({{small|U=2+}}).^[9] This makes Granö a slow rotating asteroid. The result supersedes a previous period of 5.1 hours from May 2007 ({{small|U=2-}}).{{efn|name=LCDB-GenervaObs}}

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Granö measures between 6.17 and 9.70 kilometers in diameter, and its surface has an albedo between 0.171 and 0.429.^[5]^[6]^[8] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 6.81 kilometers using an absolute magnitude of 13.2.^[3]

Naming

This minor planet was named after Johannes Gabriel Granö (1882−1956), Finnish professor of geography and rector at University of Turku from 1932 to 1934.^[2] The approved naming citation was published by the Minor Planet Center before November 1977 ({{small|M.P.C. 2277}}).^[30]

Notes

References

1. ^¹²{{cite book |title = Dictionary of Minor Planet Names – (1451) Granö |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 116 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1452 |chapter = (1451) Granö }}
2. ^¹²{{cite web |title = 1451 Grano (1938 DT) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1451 |accessdate = 16 December 2016}}
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 = 16 December 2016}}
4. ^¹²³⁴⁵⁶{{cite web |title = LCDB Data for (1451) Granö |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1451%7CGranö |accessdate = 16 December 2016}}
5. ^¹²³⁴{{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= 16 December 2016}}
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 |author = Stephens, Robert D. |date = October 2010 |title = Asteroids Observed from GMARS and Santana Observatories: 2010 April - June |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2010MPBu...37..159S |journal = The Minor Planet Bulletin |volume = 37 |issue = 4 |pages = 159–161 |issn = 1052-8091 |bibcode = 2010MPBu...37..159S |access-date= 16 December 2016}}
8. ^¹²{{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= 16 December 2016}}
9. ^¹²³{{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= 16 December 2016}}

词条	1451 Granö
释义	Orbit and classification Physical characteristics Slow rotator Diameter and albedo Naming Notes References External links {{Infobox planet \| minorplanet = yes \| name = 1451 Granö \| background = #D6D6D6 \| image = \| image_size = \| caption = \| discovery_ref = \| discovered = 22 February 1938 \| discoverer = Y. Väisälä \| discovery_site = Turku Obs. \| mpc_name = (1451) Grano \| alt_names = 1938 DT{{·}}1976 WK \| named_after = Johannes Gabriel Granö {{small\|(University of Turku)}}^[2] \| mp_category = main-belt{{·}}Flora ^[3] \| orbit_ref = \| epoch = 4 September 2017 (JD 2458000.5) \| uncertainty = 0 \| observation_arc = 56.21 yr (20,532 days) \| aphelion = 2.4619 AU \| perihelion = 1.9442 AU \| semimajor = 2.2030 AU \| eccentricity = 0.1175 \| period = 3.27 yr (1,194 days) \| mean_anomaly = 60.928° \| mean_motion = {{Deg2DMS\|0.3014\|sup=ms}} / day \| inclination = 5.1087° \| asc_node = 175.29° \| arg_peri = 51.858° \| dimensions = {{val\|6.170\|0.072}}^[5] {{val\|6.329\|0.037}} km^[6] 6.81 km {{small\|(calculated)}}^[3] {{val\|9.70\|0.57}} km^[8] \| rotation = {{val\|5.109}} h {{small\|(removed)}}{{efn\|name=LCDB-GenervaObs}} {{val\|138\|0.05}} h^[9] \| albedo = {{val\|0.171\|0.022}}^[8] 0.20 {{small\|(assumed)}}^[3] {{val\|0.4034\|0.0919}}^[6] {{val\|0.429\|0.077}}^[5] \| spectral_type = S ^[3]^[15] \| abs_magnitude = 12.6^[6]^[8]{{·}}13.2^[3]{{·}}{{val\|14.19\|0.95}}^[15] }}1451 Granö, provisional designation {{mp\|1938 DT}}, is a stony Florian asteroid and slow rotator from the inner regions of the asteroid belt, approximately 6.5 kilometers in diameter. It was discovered on 22 February 1938, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, and later named for Johannes Gabriel Granö, rector of the University of Turku.^[21] Orbit and classification The asteroid is a member of the Flora family, a large group of stony S-type asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 1.9–2.5 AU once every 3 years and 3 months (1,194 days). Its orbit has an eccentricity of 0.12 and an inclination of 5° with respect to the ecliptic. As no precoveries were taken, and no previous identifications were made, Granö{{'}}s observation arc begins with its official discovery observation in 1938.^[21] Physical characteristics Slow rotator A rotational lightcurve of Granö was obtained from photometric observations made by amateur astronomer Robert Stephens at GMARS and Santana Observatories in March 2010. Analysis gave a long rotation period of 138 hours with a brightness variation of 0.65 magnitude ({{small\|U=2+}}).^[9] This makes Granö a slow rotating asteroid. The result supersedes a previous period of 5.1 hours from May 2007 ({{small\|U=2-}}).{{efn\|name=LCDB-GenervaObs}} Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Granö measures between 6.17 and 9.70 kilometers in diameter, and its surface has an albedo between 0.171 and 0.429.^[5]^[6]^[8] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 6.81 kilometers using an absolute magnitude of 13.2.^[3] Naming This minor planet was named after Johannes Gabriel Granö (1882−1956), Finnish professor of geography and rector at University of Turku from 1932 to 1934.^[2] The approved naming citation was published by the Minor Planet Center before November 1977 ({{small\|M.P.C. 2277}}).^[30] Notes {{notelist\|refs={{efn\|name=LCDB-GenervaObs\|1=Geneva Obs. Behrend (2007) web: rotation period {{val\|5.109\|0.004}} hours with a brightness amplitude of {{val\|0.06}} mag. Summary figures for (1451) Grano at Collaborative Asteroid Lightcurve Link (CALL). Results are no longer published on website, see: Asteroids and comets rotation curves CdR – Observatoire de Genève, Raoul Behrend}} }} References 1. ^¹²{{cite book \|title = Dictionary of Minor Planet Names – (1451) Granö \|last = Schmadel \| first = Lutz D. \|publisher = Springer Berlin Heidelberg \|page = 116 \|date = 2007 \|isbn = 978-3-540-00238-3 \|doi = 10.1007/978-3-540-29925-7_1452 \|chapter = (1451) Granö }} 2. ^¹²{{cite web \|title = 1451 Grano (1938 DT) \|work = Minor Planet Center \|url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1451 \|accessdate = 16 December 2016}} 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 = 16 December 2016}} 4. ^¹²³⁴⁵⁶{{cite web \|title = LCDB Data for (1451) Granö \|publisher = Asteroid Lightcurve Database (LCDB) \|url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1451%7CGranö \|accessdate = 16 December 2016}} 5. ^¹²³⁴{{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= 16 December 2016}} 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 \|author = Stephens, Robert D. \|date = October 2010 \|title = Asteroids Observed from GMARS and Santana Observatories: 2010 April - June \|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2010MPBu...37..159S \|journal = The Minor Planet Bulletin \|volume = 37 \|issue = 4 \|pages = 159–161 \|issn = 1052-8091 \|bibcode = 2010MPBu...37..159S \|access-date= 16 December 2016}} 8. ^¹²{{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= 16 December 2016}} 9. ^¹²³{{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= 16 December 2016}} ^[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 (1)-(5000) – Minor Planet Center {{AstDys\|1451}} {{JPL small body}} {{Use dmy dates\|date=April 2018}}{{Minor planets navigator \|1450 Raimonda \|number=1451 \|1452 Hunnia}}{{Small Solar System bodies}}{{DEFAULTSORT:Grano}} 6 : Flora asteroids\|Discoveries by Yrjö Väisälä\|Minor planets named for people\|Named minor planets\|Slow rotating minor planets\|Astronomical objects discovered in 1938
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