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{{Infobox planet
#REDIRECT [[List of minor planets: 3001–4000]]
| minorplanet = yes
{{R to list entry}}
| name = 3212 Agricola
| background = #FFFFC0
| image =
| caption =
| discovery_ref = &thinsp;<ref name="jpldata" />
| discovered = 19 February 1938
| discoverer = [[Yrjö Väisälä|Y. Väisälä]]
| discovery_site = [[Iso-Heikkilä Observatory|Turku Observatory]]
| mp_name = 3212 Agricola
| alt_names = {{mp|1938 DH|2}}{{·}}{{mp|1982 BB|2}}
| named_after = [[Mikael Agricola]]<br />{{small|(reformer)}}<ref name="springer" />
| mp_category = [[main-belt]]{{·}}[[Flora family|Flora]]&thinsp;<ref name="lcdb" />
| orbit_ref = &thinsp;<ref name="jpldata" />
| epoch = 27 June 2015 ([[Julian day|JD]] 2457200.5)
| uncertainty = 0
| observation_arc = {{nowrap|77.83 yr (28,426 days)}}
| aphelion = 2.5977 [[Astronomical unit|AU]]
| perihelion = 1.9146 AU
| semimajor = 2.2561 AU
| eccentricity = 0.1514
| period = 3.39 [[Julian year (astronomy)|yr]] (1,238 days)
| mean_anomaly = 307.33[[degree (angle)|°]]
| inclination = 7.8115°
| asc_node = 109.98°
| arg_peri = 35.228°
| dimensions = {{val|4.442|0.287}} km<ref name="WISE" /><br />5.41 km {{small|(caculated)}}<ref name="lcdb" />
| rotation = 9 [[hour|h]]{{efn|name=Pravec}}
| albedo = {{val|0.3907|0.0697}}<ref name="WISE" /><br />0.24 {{small|(assumed)}}<ref name="lcdb" />
| spectral_type = [[S-type asteroid|S]]&thinsp;<ref name="lcdb" />
| abs_magnitude = 13.5<ref name="jpldata" />
}}

'''3212 Agricola''', provisional designation {{mp|1938 DH|2}}, is a stony [[asteroid]] from the inner regions of the [[asteroid belt]], about 5 kilometers in diameter. It was discovered by Finnish astronomer [[Yrjö Väisälä]] at [[Iso-Heikkilä Observatory|Turku Observatory]] in Southwest Finland, on 19 February 1938.<ref name="MPC-Agricola" />

The [[S-type asteroid|S-type]] asteroid is a member of the [[Flora family]], one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 1.9–2.6&nbsp;[[Astronomical unit|AU]] once every 3 years and 5 months (1,238 days). Its orbit shows an [[orbital eccentricity|eccentricity]] of 0.15 and is [[orbital inclination|tilted]] by 8 degrees to the plane of the [[ecliptic]].<ref name="jpldata" /> In 2006, a photometric [[light-curve]] analysis rendered a [[rotation period]] of 9 hours with an amplitude in brightness of 0.07.{{efn|name=Pravec}} Based on observations by the U.S. [[Wide-field Infrared Survey Explorer]], the asteroid's surface has a high [[astronomical albedo|albedo]] of 0.39, while the ''Collaborative Asteroid Lightcurve Link'' assumes a more moderate value of 0.24, which is also identical to the albedo of the Flora family's namesake, the asteroid [[8 Flora]].<ref name="lcdb" /><ref name="WISE" />

The minor planet was named for Finnish clergyman [[Mikael Agricola]] (c.&thinsp;1510–1557), bishop and [[Protestant Reformation|reformer]] of Finland, often called "father of Finnish literature". Around 1538 he issued his ABC-kiria, the first book printed in the Finnish language, and in 1548 he translated the New Testament into Finnish.<ref name="springer" />

== References ==
{{notelist|refs=

{{efn|name=Pravec|1=Pravec (2006) web: rotation period {{val|9}} hours with a brightness amplitude of {{val|0.07}} mag. Summary figures at {{URL|1=http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=3212%7CAgricola |2=Collaborative Asteroid Lightcurve Link (CALL) for (3212) Agricola}}}}

}} <!-- end of notelist -->

{{reflist|refs=

<ref name="lcdb">{{cite web
|title=LCDB Data for (3212) Agricola
|publisher=Asteroid Lightcurve Database (LCDB)
|url=http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=3212%7CAgricola
|accessdate=January 2016}}</ref>

<ref name="jpldata">{{cite web
|type=2015-12-18 last obs.
|title=JPL Small-Body Database Browser: 3212 Agricola (1938 DH2)
|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003212
|publisher=Jet Propulsion Laboratory
|accessdate=January 2016}}</ref>

<ref name="springer">{{cite book
|url=http://link.springer.com/referenceworkentry/10.1007/978-3-540-29925-7_3213
|title=Dictionary of Minor Planet Names – (3212) Agricola
|last=Schmadel |first=Lutz D.
|publisher=Springer Berlin Heidelberg
|page=267
|date=2003
|isbn=978-3-540-29925-7
|accessdate=January 2016}}</ref>

<ref name="MPC-Agricola">{{cite web
|title=3212 Agricola (1938 DH2)
|work=Minor Planet Center
|url=http://www.minorplanetcenter.net/db_search/show_object?object_id=3212
|accessdate=January 2016}}</ref>

<ref name="WISE">{{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
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
|page = 25
|bibcode = 2011ApJ...741...90M
|doi = 10.1088/0004-637X/741/2/90
|access-date= January 2016}}</ref>

}} <!-- end of reflist -->

== External links ==
* [http://www.asu.cas.cz/~ppravec/neo.htm www.asu.cas.cz/~ppravec/neo.htm] Pravec, P.; Wolf, M.; Sarounova, L. (2006)
* [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info])
* [https://books.google.se/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
* [http://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
* {{JPL small body|title=3212 Agricola (1938 DH2)|id=2003212}}

{{Minor planets navigator|3211 Louispharailda|3213 Smolensk}}
{{Small Solar System bodies}}


{{DEFAULTSORT:Agricola}}
{{DEFAULTSORT:Agricola}}
[[Category:Main-belt asteroids]]
[[Category:Main Belt asteroids|003212]]
[[Category:Asteroids named for people]]
[[Category:Numbered asteroids]]
[[Category:Discoveries by Yrjö Väisälä]]
[[Category:Asteroids named for people|Agricola]]
[[Category:Astronomical objects discovered in 1938]]
[[Category:Discoveries by Yrjö Väisälä|Agricola]]
[[Category:Astronomical objects discovered in 1938|19380219]]
[[Category:Flora asteroids|003212]]


{{Beltasteroid-stub}}

Revision as of 10:05, 5 January 2016

3212 Agricola
Discovery [1]
Discovered byY. Väisälä
Discovery siteTurku Observatory
Discovery date19 February 1938
Designations
3212 Agricola
Named after
Mikael Agricola
(reformer)[2]
1938 DH2 · 1982 BB2
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc77.83 yr (28,426 days)
Aphelion2.5977 AU
Perihelion1.9146 AU
2.2561 AU
Eccentricity0.1514
3.39 yr (1,238 days)
307.33°
Inclination7.8115°
109.98°
35.228°
Physical characteristics
Dimensions4.442±0.287 km[4]
5.41 km (caculated)[3]
9 h[a]
0.3907±0.0697[4]
0.24 (assumed)[3]
S [3]
13.5[1]

3212 Agricola, provisional designation 1938 DH2, is a stony asteroid from the inner regions of the asteroid belt, about 5 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, on 19 February 1938.[5]

The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,238 days). Its orbit shows an eccentricity of 0.15 and is tilted by 8 degrees to the plane of the ecliptic.[1] In 2006, a photometric light-curve analysis rendered a rotation period of 9 hours with an amplitude in brightness of 0.07.[a] Based on observations by the U.S. Wide-field Infrared Survey Explorer, the asteroid's surface has a high albedo of 0.39, while the Collaborative Asteroid Lightcurve Link assumes a more moderate value of 0.24, which is also identical to the albedo of the Flora family's namesake, the asteroid 8 Flora.[3][4]

The minor planet was named for Finnish clergyman Mikael Agricola (c. 1510–1557), bishop and reformer of Finland, often called "father of Finnish literature". Around 1538 he issued his ABC-kiria, the first book printed in the Finnish language, and in 1548 he translated the New Testament into Finnish.[2]

References

  1. ^ a b Pravec (2006) web: rotation period 9 hours with a brightness amplitude of 0.07 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (3212) Agricola
  1. ^ a b c d "JPL Small-Body Database Browser: 3212 Agricola (1938 DH2)" (2015-12-18 last obs.). Jet Propulsion Laboratory. Retrieved January 2016. {{cite web}}: Check date values in: |accessdate= (help)
  2. ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (3212) Agricola. Springer Berlin Heidelberg. p. 267. ISBN 978-3-540-29925-7. Retrieved January 2016. {{cite book}}: Check date values in: |accessdate= (help)
  3. ^ a b c d e "LCDB Data for (3212) Agricola". Asteroid Lightcurve Database (LCDB). Retrieved January 2016. {{cite web}}: Check date values in: |accessdate= (help)
  4. ^ a b c Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved January 2016. {{cite journal}}: Check date values in: |access-date= (help)
  5. ^ "3212 Agricola (1938 DH2)". Minor Planet Center. Retrieved January 2016. {{cite web}}: Check date values in: |accessdate= (help)

External links


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