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词条 1054 Forsytia
释义

  1. Orbit and classification

  2. Physical characteristics

      Rotation period    Diameter and albedo  

  3. Naming

      Reinmuth's flowers  

  4. References

  5. External links

{{Infobox planet
| minorplanet = yes
| name = 1054 Forsytia
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref =  
| discoverer = K. Reinmuth
| discovery_site = Heidelberg Obs.
| discovered = 20 November 1925
| mpc_name = (1054) Forsytia
| alt_names = 1925 WD{{·}}1962 DD
A907 EA
| pronounced = {{IPAc-en|f|ɔr|ˈ|s|ɪ|t|i|ə}} or {{IPAc-en|f|ɔr|ˈ|s|aɪ|t|i|ə}}
| named_after = Forsythia {{small|(flowering plant)}}[2]
| mp_category = main-belt{{·}}{{small|(outer)}} [3]
background [4]
| orbit_ref =  
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 110.32 yr (40,295 days)
| aphelion = 3.3198 AU
| perihelion = 2.5284 AU
| semimajor = 2.9241 AU
| eccentricity = 0.1353
| period = 5.00 yr (1,826 days)
| mean_anomaly = 165.01°
| mean_motion = {{Deg2DMS|0.1971|sup=ms}} / day
| inclination = 10.849°
| asc_node = 85.888°
| arg_peri = 294.19°
| dimensions = {{val|42.867|11.18}} km[6]
45.42 km {{small|(derived)}}[3]
{{val|45.47|4.3}} km[8]
{{val|46.40|13.38}} km[9]
{{val|46.69|15.08}} km[10]
{{val|47.780|3.344}} km[11]
{{val|53.04|0.71}} km[12]
| rotation = {{val|7.650|0.001}} h[13]
| albedo = {{val|0.035|0.013}}[11]
{{val|0.04|0.07}}[9]
{{val|0.048|0.002}}[12]
{{val|0.05|0.03}}[10]
0.0592 {{small|(derived)}}[3]
{{val|0.0648|0.014}}[8]
{{val|0.0750|0.0441}}[6]
| spectral_type = C {{small|(assumed)}}[3]
| abs_magnitude = 10.12[6]{{·}}{{val|10.12|0.51}}[23]{{·}}10.30[8][12]{{·}}10.40[3][10]{{·}}10.46[9]{{·}}10.87[11]
}}1054 Forsytia ({{IPAc-en|f|ɔr|ˈ|s|ɪ|t|i|ə}} or {{IPAc-en|f|ɔr|ˈ|s|aɪ|t|i|ə}}), provisional designation {{mp|1925 WD}}, is a dark background asteroid from the outer regions of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 20 November 1925, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[31] It is named after the flowering plant forsythia, and marks the beginning of a sequence of 28 thematically named asteroids by the discoverer.[2]

Orbit and classification

Forsytia is a non-family asteroid from the main belt's background population.[4] It orbits the Sun in the outer asteroid belt at a distance of 2.5–3.3 AU once every 5.00 years (1,826 days; semi-major axis of 2.92 AU). Its orbit has an eccentricity of 0.14 and an inclination of 11° with respect to the ecliptic.

The asteroid was first observed as {{mp|A907 EA}} at Heidelberg in March 1907. The body's observation arc begins with its official discovery observation in November 1925.[31]

Physical characteristics

Forsytia is an assumed carbonaceous C-type asteroid.[3]

Rotation period

In March 2002, a rotational lightcurve of Forsytia was obtained from photometric observations by American amateur astronomer John Gross at his Sonoran Skies Observatory ({{small|G94}}) in Arizona. Lightcurve analysis gave a well-defined rotation period of 7.650 hours with a brightness amplitude of 0.23 magnitude ({{small|U=3}}).[13]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Forsytia measures between 42.867 and 53.04 kilometers in diameter and its surface has an albedo between 0.035 and 0.0750.[6][8][9][10][11][12]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0592 and a diameter of 45.42 kilometers based on an absolute magnitude of 10.4.[3]

Naming

This minor planet was named after forsythia, a genus of flowering shrubs in the Oleaceae family. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ({{small|H 100}}).[2]

Reinmuth's flowers

Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between {{MoMP|1009|(1009)}} and {{MoMP|1200|(1200)}}. This list also contained a sequence of 28 asteroids, starting with this asteroid, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).[2]

References

1. ^1 2 3 4 {{cite book |title = Dictionary of Minor Planet Names – (1054) Forsytia |last = Schmadel |first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 90 |date = 2007 |url = https://link.springer.com/referenceworkentry/10.1007/978-3-540-29925-7_1055 |isbn = 978-3-540-00238-3 |accessdate = 10 January 2018 |deadurl = unfit |archiveurl = https://web.archive.org/web/20170924095706/https://link.springer.com/referenceworkentry/10.1007/978-3-540-29925-7_1055 |archivedate= 24 September 2017}}
2. ^1 2 {{cite web |title = 1054 Forsytia (1925 WD) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1054 |accessdate = 10 January 2018}}
3. ^1 2 {{cite web |title = Small Bodies Data Ferret |work = Nesvorny HCM Asteroid Families V3.0 |url = https://sbntools.psi.edu/ferret/PropertySearch/familyForm.action |accessdate = 10 January 2018}}
4. ^1 2 3 4 5 6 7 {{cite web |title = LCDB Data for (1054) Forsytia |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1054%7CForsytia |accessdate = 10 January 2018}}
5. ^1 2 3 4 {{cite journal |first1 = E. F. |last1 = Tedesco |first2 = P. V. |last2 = Noah |first3 = M. |last3 = Noah |first4 = S. D. |last4 = Price |date = October 2004 |title = IRAS Minor Planet Survey V6.0 |url = https://sbn.psi.edu/pds/asteroid/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab |journal = NASA Planetary Data System |bibcode = 2004PDSS...12.....T |access-date = 10 January 2018 |archive-url = https://web.archive.org/web/20160603231123/http://sbn.psi.edu/pds/asteroid/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab |archive-date = 2016-06-03 |dead-url = yes |df = }}
6. ^1 2 3 4 {{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= 10 January 2018}}
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= 10 January 2018}}
8. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Bauer |first4 = R. M. |last4 = Cutri |first5 = E. A. |last5 = Kramer |first6 = T. |last6 = Grav |first7 = J. |last7 = Masiero |first8 = S. |last8 = Sonnett |first9 = E. L. |last9 = Wright |date = September 2016 |title = NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016AJ....152...63N |journal = The Astronomical Journal |volume = 152 |issue = 3 |page = 12 |bibcode = 2016AJ....152...63N |doi = 10.3847/0004-6256/152/3/63 |arxiv = 1606.08923 |access-date= 10 January 2018}}
9. ^1 2 3 4 {{Cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = C. |last2 = Nugent |first3 = A. K. |last3 = Mainzer |first4 = E. L. |last4 = Wright |first5 = J. M. |last5 = Bauer |first6 = R. M. |last6 = Cutri |first7 = T. |last7 = Grav |first8 = E. |last8 = Kramer |first9 = S. |last9 = Sonnett |date = October 2017 |title = NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos |url = https://arxiv.org/pdf/1708.09504.pdf |journal = The Astronomical Journal |volume = 154 |issue = 4 |page = 10 |bibcode = 2017AJ....154..168M |doi = 10.3847/1538-3881/aa89ec |arxiv = 1708.09504 |access-date= 10 January 2018}}
10. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Masiero |first4 = J. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = T. |last6 = Grav |first7 = E. |last7 = Kramer |first8 = S. |last8 = Sonnett |first9 = R. |last9 = Stevenson |first10 = E. L. |last10 = Wright |date = December 2015 |title = NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N |journal = The Astrophysical Journal |volume = 814 |issue = 2 |page = 13 |bibcode = 2015ApJ...814..117N |doi = 10.1088/0004-637X/814/2/117 |arxiv = 1509.02522 |access-date= 10 January 2018}}
11. ^1 2 {{Cite journal |author = Gross, John |date = September 2003 |title = Sonoran Skies Observatory lightcurve results for asteroids 1054, 1390, 1813 1838, 2988, 3167, 4448, and 5262 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2003MPBu...30...44G |journal = The Minor Planet Bulletin |volume = 30 |issue = 3 |pages = 44–46 |issn = 1052-8091 |bibcode = 2003MPBu...30...44G |access-date= 10 January 2018}}
12. ^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 January 2018}}
[1][2][3][4][5][6][7][8][9][10][11][12]

}}

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 |1053 Vigdis |number=1054 |1055 Tynka}}{{Small Solar System bodies}}{{DEFAULTSORT:Forsytia}}

5 : Background asteroids|Discoveries by Karl Wilhelm Reinmuth|Minor planets named for plants|Named minor planets|Astronomical objects discovered in 1925
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