“1704 Wachmann”的意思、由来-开放百科全书

The S-type asteroid orbits the Sun in the inner main-belt at a distance of 2.0–2.4 AU once every 3 years and 4 months (1,210 days). Its orbit has an eccentricity of 0.09 and an inclination of 1° with respect to the ecliptic. No precoveries were taken. The asteroid's observation arc begins 3 days after its official discovery observation.^[18]

Physical characteristics

Lightcurves

In April 2007, a rotational lightcurve Wachmann was obtained at the U.S. Sandia View Observatory in New Mexico ({{small|H03}}). Lightcurve analysis gave a well-defined rotation period of {{val|3.314|0.001}} hours with a brightness variation of 0.40 magnitude ({{small|U=3}}).^[8]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wachmann measures 6.6 and 6.9 kilometers in diameter, and its surface has an albedo of 0.177 and 0.193, respectively,^[5]^[6] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.8 kilometers, based on an absolute magnitude of 12.9.^[3]

Naming

This minor planet was named for Arno Wachmann (1902–1990), long-time astronomer at the Bergedorf Observatory in Hamburg, discoverer of minor planets and comets, and observer of variable and binary stars. He is best known for the co-discovery of the three "Schwassmann–Wachmann" comets, 29P, 31P and 73P.^[2] The official naming citation was published by the Minor Planet Center before November 1977 ({{small|M.P.C. 3933}}).^[26]

References

1. ^¹²³{{cite book |title = Dictionary of Minor Planet Names – (1704) Wachmann |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |pages = 135–136 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1705 |chapter = (1704) Wachmann }}
2. ^¹²{{cite web |title = 1704 Wachmann (A924 EE) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1704 |accessdate = 20 July 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 = 20 July 2016}}
4. ^¹²³⁴⁵⁶{{cite web |title = LCDB Data for (1704) Wachmann |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1704%7CWachmann |accessdate = 20 July 2016}}
5. ^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 }}
6. ^¹²{{Cite journal |last = Julian, II |first = William M. |date = March 2008 |title = Period Determination for 1704 Wachmann |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35....4J |journal = The Minor Planet Bulletin |volume = 35 |issue = 1 |page = 4 |issn = 1052-8091 |bibcode = 2008MPBu...35....4J |access-date= 20 July 2016}}
7. ^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= 20 July 2016}}
8. ^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= 8 December 2016}}

词条	1704 Wachmann
释义	Classification and orbit Physical characteristics Lightcurves Diameter and albedo Naming References External links {{Infobox planet \| minorplanet = yes \| name = 1704 Wachmann \| background = #D6D6D6 \| image = 1704Wachmann (Lightcurve Inversion).png \| image_size = 265px \| caption = {{longitem\|Light curve based 3D-model of Wachmann\|style=padding: 5px 0;}} \| discovery_ref = \| discovered = 7 March 1924 \| discoverer = K. Reinmuth \| discovery_site = Heidelberg Obs. \| mpc_name = (1704) Wachmann \| alt_names = A924 EE{{·}}1947 CE 1957 BJ \| pronounced = \| named_after = Arno Wachmann {{small\|(German astronomer)}}^[2] \| mp_category = main-belt{{·}}{{small\|(inner)}} ^[3] \| orbit_ref = \| epoch = 4 September 2017 (JD 2458000.5) \| uncertainty = 0 \| observation_arc = 93.16 yr (34,026 days) \| aphelion = 2.4163 AU \| perihelion = 2.0292 AU \| semimajor = 2.2228 AU \| eccentricity = 0.0871 \| period = 3.31 yr (1,210 days) \| mean_anomaly = 67.047° \| mean_motion = {{Deg2DMS\|0.2974\|sup=ms}} / day \| inclination = 0.9715° \| asc_node = 259.47° \| arg_peri = 280.77° \| dimensions = {{val\|6.618\|0.070}}^[5] {{val\|6.934\|0.070}} km^[6] 7.82 km {{small\|(calculated)}}^[3] \| rotation = {{val\|3.314\|0.001}} h^[8] \| albedo = {{val\|0.1767\|0.0133}}^[6] {{val\|0.193\|0.036}}^[5] 0.20 {{small\|(assumed)}}^[3] \| spectral_type = S ^[3] \| abs_magnitude = 12.9^[3]{{·}}{{val\|12.97\|0.13}}^[15]{{·}}13.3^[6] }}1704 Wachmann, provisional designation {{mp\|A924 EE}}, is a stony asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 7 March 1924. It was later named after astronomer Arno Wachmann.^[2]^[18] Classification and orbit The S-type asteroid orbits the Sun in the inner main-belt at a distance of 2.0–2.4 AU once every 3 years and 4 months (1,210 days). Its orbit has an eccentricity of 0.09 and an inclination of 1° with respect to the ecliptic. No precoveries were taken. The asteroid's observation arc begins 3 days after its official discovery observation.^[18] Physical characteristics Lightcurves In April 2007, a rotational lightcurve Wachmann was obtained at the U.S. Sandia View Observatory in New Mexico ({{small\|H03}}). Lightcurve analysis gave a well-defined rotation period of {{val\|3.314\|0.001}} hours with a brightness variation of 0.40 magnitude ({{small\|U=3}}).^[8] Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wachmann measures 6.6 and 6.9 kilometers in diameter, and its surface has an albedo of 0.177 and 0.193, respectively,^[5]^[6] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.8 kilometers, based on an absolute magnitude of 12.9.^[3] Naming This minor planet was named for Arno Wachmann (1902–1990), long-time astronomer at the Bergedorf Observatory in Hamburg, discoverer of minor planets and comets, and observer of variable and binary stars. He is best known for the co-discovery of the three "Schwassmann–Wachmann" comets, 29P, 31P and 73P.^[2] The official naming citation was published by the Minor Planet Center before November 1977 ({{small\|M.P.C. 3933}}).^[26] References 1. ^¹²³{{cite book \|title = Dictionary of Minor Planet Names – (1704) Wachmann \|last = Schmadel \| first = Lutz D. \|publisher = Springer Berlin Heidelberg \|pages = 135–136 \|date = 2007 \|isbn = 978-3-540-00238-3 \|doi = 10.1007/978-3-540-29925-7_1705 \|chapter = (1704) Wachmann }} 2. ^¹²{{cite web \|title = 1704 Wachmann (A924 EE) \|work = Minor Planet Center \|url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1704 \|accessdate = 20 July 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 = 20 July 2016}} 4. ^¹²³⁴⁵⁶{{cite web \|title = LCDB Data for (1704) Wachmann \|publisher = Asteroid Lightcurve Database (LCDB) \|url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1704%7CWachmann \|accessdate = 20 July 2016}} 5. ^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 }} 6. ^¹²{{Cite journal \|last = Julian, II \|first = William M. \|date = March 2008 \|title = Period Determination for 1704 Wachmann \|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35....4J \|journal = The Minor Planet Bulletin \|volume = 35 \|issue = 1 \|page = 4 \|issn = 1052-8091 \|bibcode = 2008MPBu...35....4J \|access-date= 20 July 2016}} 7. ^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= 20 July 2016}} 8. ^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= 8 December 2016}} ^[1]^[2]^[3]^[4]^[5]^[6]^[7]^[8] }} 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 {{JPL small body}} {{Minor planets navigator\|1703 Barry \|number=1704\|1705 Tapio}}{{Small Solar System bodies}}{{DEFAULTSORT:Wachmann}} 5 : Background asteroids\|Discoveries by Karl Wilhelm Reinmuth\|Minor planets named for people\|Named minor planets\|Astronomical objects discovered in 1924
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Classification and orbit

Physical characteristics

Lightcurves

Diameter and albedo

Naming

References

External links