3045 Alois
{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| name = 3045 Alois
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovered = 8 January 1984
| discoverer = J. Wagner
| discovery_site = Anderson Mesa Stn.
| mpc_name = (3045) Alois
| alt_names = 1984 AW{{·}}1954 QD
1965 QD{{·}}{{mp|1971 SB|3}}
{{mp|1982 SY|3}}
| named_after = Alois T. Stuczynski
{{small|(discoverer's grandfather)}}
| mp_category = main-belt{{·}}{{small|(outer)}}
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 66.15 yr (24,160 days)
| aphelion = 3.4822 AU
| perihelion = 2.7782 AU
| semimajor = 3.1302 AU
| eccentricity = 0.1124
| period = 5.54 yr (2,023 days)
| mean_anomaly = 120.77°
| mean_motion = {{Deg2DMS|0.1780|sup=ms}} / day
| inclination = 3.3434°
| asc_node = 36.206°
| arg_peri = 330.87°
| dimensions = {{val|23.51|1.58}} km
26.64 km {{small|(calculated)}}
{{val|27.49|0.20}} km
| rotation = {{val|3.7533|0.0058}} h
| albedo = 0.057 {{small|(assumed)}}
{{val|0.059|0.009}}
{{val|0.095|0.015}}
| abs_magnitude = 11.40{{·}}{{val|11.412|0.001}} {{small|(R)}}{{·}}11.50{{·}}11.6{{·}}{{val|11.91|0.17}}
}}
3045 Alois, provisional designation {{mp|1984 AW}}, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 26 kilometers in diameter. The asteroid was discovered on 8 January 1984, by American astronomer Joe Wagner at Lowell's Anderson Mesa Station in Flagstaff, Arizona, United States. It was named after the discoverer's grandfather Alois Stuczynski.
Orbit and classification
Alois orbits the Sun in the outer main-belt at a distance of 2.8–3.5 AU once every 5 years and 6 months (2,023 days). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic. A first precovery was taken at Palomar Observatory in 1951, extending the body's observation arc by 33 years prior to its official discovery observation at Anderson Mesa.
Physical characteristics
The C-type body is also classified as an X-type asteroid by Pan-STARRS{{'}} large-scale survey.
= Rotation period =
In November 2010, a rotational lightcurve of Alois was obtained from photometric observations made at the Palomar Transient Factory, California. It gave a rotation period of {{val|3.7533|0.0058}} hours with a brightness amplitude of 0.18 in magnitude ({{small|U=2}}).
= Diameter and albedo =
According to the space-based surveys by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer, Alois measures 23.5 and 27.5 kilometers in diameter, respectively, and has a corresponding albedo of 0.095 and 0.059. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 26.6 kilometers.
Naming
This minor planet was named by the discoverer in memory of his grandfather, Alois T. Stuczynski. The official naming citation was published by the Minor Planet Center on 7 March 1985 ({{small|M.P.C. 9479}}).
References
{{reflist|30em|refs=
|type = 2017-03-29 last obs.
|title = JPL Small-Body Database Browser: 3045 Alois (1984 AW)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003045
|publisher = Jet Propulsion Laboratory
|access-date = 15 June 2017}}
|title = Dictionary of Minor Planet Names – (3045) Alois
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|page = 251
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_3046 |chapter = (3045) Alois }}
|title = 3045 Alois (1984 AW)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=3045
|access-date = 13 May 2016}}
|title = MPC/MPO/MPS Archive
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
|access-date = 13 May 2016}}
|title = LCDB Data for (3045) Alois
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=3045%7CAlois
|access-date = 13 May 2016}}
|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=3045 online], [https://core.ac.uk/download/pdf/43545172.pdf AcuA catalog p. 153])
|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= 13 May 2016}}
|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= 13 May 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
|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= 13 May 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|3045}}
- {{JPL small body}}
{{Minor planets navigator |3044 Saltykov| number=3045 |3046 Molière}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Alois}}