3212 Agricola

3212 Agricola
Discovery[1]
Discovered by Y. Väisälä
Discovery site Turku Observatory
Discovery date 19 February 1938
Designations
MPC designation 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 arc 77.83 yr (28,426 days)
Aphelion 2.5977 AU
Perihelion 1.9146 AU
2.2561 AU
Eccentricity 0.1514
3.39 yr (1,238 days)
307.33°
Inclination 7.8115°
109.98°
35.228°
Physical characteristics
Dimensions 4.442±0.287 km[4]
5.41 km (caculated)[3]
9 h[lower-alpha 1]
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.[lower-alpha 1] 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. 1 2 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. 1 2 3 4 "JPL Small-Body Database Browser: 3212 Agricola (1938 DH2)" (2015-12-18 last obs.). Jet Propulsion Laboratory. Retrieved January 2016.
    2. 1 2 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.
    3. 1 2 3 4 5 "LCDB Data for (3212) Agricola". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
    4. 1 2 3 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved January 2016.
    5. "3212 Agricola (1938 DH2)". Minor Planet Center. Retrieved January 2016.

    External links


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