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词条 1250 Galanthus
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 = 1250 Galanthus
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref =  
| discoverer = K. Reinmuth
| discovery_site = Heidelberg Obs.
| discovered = 25 January 1933
| mpc_name = (1250) Galanthus
| alt_names = 1933 BD{{·}}1971 OQ
| pronounced =
| named_after = Galanthus (snowdrop)
{{small|(herbaceous plants)}}[2]
| mp_category = main-belt{{·}}{{small|(middle)}}
background [3]
| orbit_ref =  
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 84.84 yr (30,987 days)
| aphelion = 3.2465 AU
| perihelion = 1.8560 AU
| semimajor = 2.5513 AU
| eccentricity = 0.2725
| period = 4.08 yr (1,488 days)
| mean_anomaly = 249.60°
| mean_motion = {{Deg2DMS|0.2419|sup=ms}} / day
| inclination = 15.169°
| asc_node = 292.02°
| arg_peri = 217.17°
| dimensions = {{val|17.18|5.39}} km[5]
{{val|19.394|0.152}} km[6]
{{val|19.54|0.36}} km[7]
{{val|20.062|0.112}} km[8]
{{val|20.33|4.93}} km[9]
{{val|21.00|2.9}} km[10]
| rotation = {{val|3.918|0.0009}} h[11]
{{val|3.92|}} h[12]
| albedo = {{val|0.04|0.02}}[9]
{{val|0.0443|0.0069}}[6]
{{val|0.0500|0.017}}[10]
{{val|0.055|0.011}}[8]
{{val|0.058|0.002}}[7]
{{val|0.06|0.04}}[5]
| spectral_type = C {{small|(assumed)}}[19]
| abs_magnitude = {{val|12.233|0.001}} {{small|(R)}}[11]{{·}}12.26[5][6][7][10][19]{{·}}12.52[9]
}}1250 Galanthus, provisional designation {{mp|1933 BD}}, is a dark background asteroid from the central regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 25 January 1933, by German astronomer Karl Reinmuth at the Heidelberg Observatory.[28] The asteroid was named for the herbaceous plant Galanthus, also known as "snowdrop".[2]

Orbit and classification

Galanthus is a non-family asteroid from the main belt's background population.[3] It orbits the Sun in the central main-belt at a distance of 1.9–3.2 AU once every 4 years and 1 month (1,488 days; semi-major axis of 2.55 AU). Its orbit has an eccentricity of 0.27 and an inclination of 15° with respect to the ecliptic. The body's observation arc begins at Heidelberg the night after its official discovery observation.[28]

Physical characteristics

Galanthus is an assumed carbonaceous C-type asteroid.[19]

Rotation period

In the early 1980s, a rotational lightcurve of Galanthus was obtained during a survey conducted by Richard P. Binzel at the McDonald Observatory, Texas. Lightcurve analysis gave a well-defined rotation period of 3.92 hours with a brightness variation of 0.28 magnitude ({{small|U=3}}).[12] The period was confirmed from photometric observations by astronomers at the Palomar Transient Factory in October 2015, which gave a similar period of 3.918 hours and an amplitude of 0.22 magnitude ({{small|U=2}}).[11]

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, Galanthus measures between 17.18 and 21.00 kilometers in diameter and its surface has an albedo between 0.04 and 0.06.[5][6][7][8][9][10]

The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0500 and a diameter of 21.0 kilometers based on an absolute magnitude of 12.26.[19]

Naming

This minor planet was named after the herbaceous plant Galanthus, also known as "snowdrop".[2] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ({{small|H 115}}).[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 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).[45]

References

1. ^1 2 3 4 {{cite book |title = Dictionary of Minor Planet Names – (1250) Galanthus |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 102 |date = 2003 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1251 |chapter = (1250) Galanthus }}
2. ^1 {{cite book |title = Dictionary of Minor Planet Names – (1054) Forsytia |last = Schmadel |first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 90 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1055 |chapter = (1054) Forsytia }}
3. ^1 2 {{cite web |title = 1250 Galanthus (1933 BD) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1250 |accessdate = 31 December 2017}}
4. ^1 2 3 {{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 |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 }}
5. ^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 = 31 December 2017}}
6. ^1 2 3 4 {{cite web |title = LCDB Data for (1250) Galanthus |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1250%7CGalanthus |accessdate = 31 December 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= 31 December 2017}}
8. ^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 |pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 |bibcode = 2004PDSS...12.....T |access-date = 31 December 2017 |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 = }}
9. ^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 }}
10. ^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= 31 December 2017}}
11. ^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= 31 December 2017}}
12. ^1 2 3 {{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= 31 December 2017}}
13. ^1 2 {{Cite journal |first1 = R. P. |last1 = Binzel |first2 = J. D. |last2 = Mulholland |date = December 1983 |title = A photoelectric lightcurve survey of small main belt asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1983Icar...56..519B |journal = Icarus |volume = 56 |issue = 3 |pages = 519–533 |issn = 0019-1035 |bibcode = 1983Icar...56..519B |doi = 10.1016/0019-1035(83)90170-7 |access-date= 31 December 2017}}
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}}

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 |1249 Rutherfordia |number=1250 |1251 Hedera}}{{Small Solar System bodies}}{{DEFAULTSORT:Galanthus}}

5 : Background asteroids|Discoveries by Karl Wilhelm Reinmuth|Minor planets named for plants|Named minor planets|Astronomical objects discovered in 1933
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