1628 Strobel
{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| name = 1628 Strobel
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovered = 11 September 1923
| discoverer = K. Reinmuth
| discovery_site = Heidelberg Obs.
| mpc_name = (1628) Strobel
| alt_names = 1923 OG{{·}}1926 GY
1947 GC{{·}}{{mp|1949 QA|2}}
{{mp|1952 DV|2}}{{·}}1957 CA
1960 WH
| named_after = Willi Strobel {{small|(astronomer)}}
| mp_category = main-belt{{·}}{{small|(outer)}}
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 93.11 yr (34,007 days)
| aphelion = 3.2152 AU
| perihelion = 2.8088 AU
| semimajor = 3.0120 AU
| eccentricity = 0.0675
| period = 5.23 yr (1,909 days)
| mean_anomaly = 244.38°
| mean_motion = {{Deg2DMS|0.1885|sup=ms}} / day
| inclination = 19.387°
| asc_node = 181.19°
| arg_peri = 289.14°
| dimensions = {{val|51.15|14.91}} km
{{val|53.147|0.793}} km
{{val|54.26|16.39}} km
{{val|56.58|0.68}} km
57.06 km {{small|(derived)}}
{{val|57.12|1.7}} km {{small|(IRAS:12)}}
{{val|59.345|0.484}} km
| rotation = {{val|9.52|0.01}} h
{{val|11.80|}} h
| albedo = {{val|0.047|0.010}}
{{val|0.05|0.03}}
0.0504 {{small|(derived)}}
{{val|0.0532|0.003}} {{small|(IRAS:12)}}
{{val|0.055|0.002}}
{{val|0.0581|0.0113}}
{{val|0.06|0.04}}
| spectral_type = P{{·}}X{{·}}C
B–V = 0.840
U–B = 0.320
| abs_magnitude = 10.02{{·}}10.08{{·}}{{val|10.31|0.20}}{{·}}10.32
}}
1628 Strobel (provisional designation {{mp|1923 OG}}) is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 55 kilometers in diameter.
It was discovered on 11 September 1923, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, and named after ARI-astronomer Willi Strobel.
Classification and orbit
Strobel orbits the Sun in the outer main-belt at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,909 days). Its orbit has an eccentricity of 0.07 and an inclination of 19° with respect to the ecliptic. Strobel's observation arc begins two nights after its official discovery observation at Heidelberg in 1923.
Physical characteristics
Strobel is a carbonaceous C-type asteroid. It is also classified as a P-type by WISE and as an X-type asteroid by Pan-STARRS.
= Rotation period =
American astronomer Richard Binzel obtained the first rotational lightcurve of Strobel in May 1984. It gave a rotation period of 11.80 hours with a brightness amplitude of 0.22 magnitude ({{small|U=2}}). In May 2005, photometric observations by French amateur astronomer Laurent Bernasconi gave a shorter period of 9.52 hours and a brightness change of 0.20 magnitude ({{small|U=2}}).
= Diameter and albedo =
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Strobel measures between 51.15 and 59.35 kilometers in diameter, and its surface has an albedo between 0.047 and 0.06. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0504 and a diameter of 57.06 kilometers with an absolute magnitude of 10.08.
Naming
This minor planet was named in honor of Willi Strobel (1909–1988), staff member at Astronomisches Rechen-Institut (ARI) since 1938, and author of the 1963-edition of Identifizierungsnachweis der Kleinen Planeten (Minor planet identifications, published by ARI). The official {{MoMP|1628|naming citation}} was published by the Minor Planet Center on 20 February 1976 ({{small|M.P.C. 3931}}).
References
{{reflist|refs=
|type = 2016-10-19 last obs.
|title = JPL Small-Body Database Browser: 1628 Strobel (1923 OG)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001628
|publisher = Jet Propulsion Laboratory
|accessdate = 30 June 2017}}
|title = Dictionary of Minor Planet Names – (1628) Strobel
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|page = 129
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_1629 |chapter = (1628) Strobel }}
|title = 1628 Strobel (1923 OG)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1628
|accessdate = 27 December 2016}}
|title = Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008)
|chapter = Appendix – Publication Dates of the MPCs
|last = Schmadel |first=Lutz D.
|date = 2009
|publisher = Springer Berlin Heidelberg
|page = 221
|isbn = 978-3-642-01964-7
|doi = 10.1007/978-3-642-01965-4|bibcode = 2009dmpn.book.....S
}}
|title = Asteroids and comets rotation curves – (1628) Strobel
|last = Behrend |first = Raoul
|publisher = Geneva Observatory
|url = http://obswww.unige.ch/~behrend/page4cou.html#001628
|accessdate = 27 December 2016}}
|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
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|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= 27 December 2016}}
|title = LCDB Data for (1628) Strobel
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1628%7CStrobel
|accessdate = 27 December 2016}}
|first1 = E. F. |last1 = Tedesco
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|date = October 2004
|title = IRAS Minor Planet Survey V6.0
|url = https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab
|journal = NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0
|bibcode = 2004PDSS...12.....T
|accessdate = 17 October 2019}}
|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
|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
|doi-access=
}} ([http://vizier.cfa.harvard.edu/viz-bin/VizieR-5?-source=J/PASJ/63/1117/acua_v1&Num=1628 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])
|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
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|first12 = W. |last12 = Mo
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|date = November 2011
|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
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|bibcode = 2011ApJ...741...90M
|doi = 10.1088/0004-637X/741/2/90
|arxiv = 1109.6407|s2cid = 35447010 }}
|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
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|first10 = E. L. |last10 = Wright
|date = December 2015
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|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N
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|volume = 814
|issue = 2
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|bibcode = 2015ApJ...814..117N
|doi = 10.1088/0004-637X/814/2/117
|arxiv = 1509.02522
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|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
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|first8 = S. |last8 = Sonnett
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|author = Binzel, R. P.
|date = October 1987
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|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1987Icar...72..135B
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|issn = 0019-1035
|bibcode = 1987Icar...72..135B
|doi = 10.1016/0019-1035(87)90125-4
|access-date= 27 December 2016}}
|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
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|first15 = Paul A. |last15 = Price
|first16 = John L. |last16 = Tonry
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|date = November 2015
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|arxiv = 1506.00762
|s2cid = 53493339 |access-date= 27 December 2016}}
}}
External links
- [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
- [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
- [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend
- [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
- {{AstDys|1628}}
- {{JPL small body}}
{{Minor planets navigator|1627 Ivar|number=1628|1629 Pecker}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Strobel}}