1927 Suvanto

1927 Suvanto, provisional designation 1936 FP, is a stony Eunomian asteroid from the central region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 18 March 1936, by Finnish astronomer Rafael Suvanto at the Turku Observatory in Southwest Finland.[10] The asteroid was posthumously named in honor of the discoverer.[2]

1927 Suvanto
Lightcurve-based 3D-model of Suvanto
Discovery [1]
Discovered byR. Suvanto
Discovery siteTurku Obs.
Discovery date18 March 1936
Designations
(1927) Suvanto
Named after
Rafael Suvanto
(discoverer; posthumous)[2]
1936 FP · 1930 XN
main-belt · Eunomia [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc86.21 yr (31,487 days)
Aphelion3.0392 AU
Perihelion2.2631 AU
2.6512 AU
Eccentricity0.1464
4.32 yr (1,577 days)
352.49°
0° 13m 41.88s / day
Inclination13.372°
27.146°
95.875°
Physical characteristics
Dimensions11.55 km (calculated)[3]
11.841±0.188 km[4]
12.42±1.28 km[5]
12.494±0.155 km[6]
8.163±0.003 h[7]
8.164±0.002 h[8]
0.289±0.080[4]
0.2609±0.0380[6]
0.193±0.157[5]
0.21 (assumed)[3]
S [3][9]
11.6[6] · 11.93[5] · 12.0[1][3] · 12.22±0.50[9]

    Orbit and classification

    Suvanto is a member of the Eunomia family, the most prominent family in the intermediate main-belt, which mostly consists of stony S-type asteroids. It orbits the Sun at a distance of 2.3–3.0 AU once every 4 years and 4 months (1,577 days). Its orbit has an eccentricity of 0.15 and an inclination of 13° with respect to the ecliptic.[1]

    Physical characteristics

    It will pass 0.048 AU (7,200,000 km) from 2 Pallas on 24 May 2074, which will allow a refinement to the known mass of Pallas.[1]

    Photometric observations of Suvanto collected during 2004–2005 show a rotation period of 8.163 hours with a brightness variation of 0.60 magnitude.[7]

    Naming

    This minor planet was named in memory of Rafael Suvanto (credited discoverer), assistant of Yrjö Väisälä. Suvanto died during the last days of the Finnish Winter War of in the Battle of Summa (also see naming of asteroid 1928 Summa).[2] The approved naming citation was published by the Minor Planet Center on 1 August 1980 (M.P.C. 5450).[11]

    References
    1. "JPL Small-Body Database Browser: 1927 Suvanto (1936 FP)" (2017-02-26 last obs.). Jet Propulsion Laboratory. Retrieved 15 June 2017.
    2. Schmadel, Lutz D. (2007). "(1927) Suvanto". Dictionary of Minor Planet Names – (1927) Suvanto. Springer Berlin Heidelberg. p. 155. doi:10.1007/978-3-540-29925-7_1928. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1927) Suvanto". Asteroid Lightcurve Database (LCDB). Retrieved 15 June 2017.
    4. Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 14 June 2017.
    5. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 15 June 2017.
    6. 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.
    7. Pray, Donald P. (September 2005). "Lightcurve analysis of asteroids 106, 752, 847, 1057, 1630, 1670, 1927 1936, 2426, 2612, 2647, 4087, 5635, 5692, and 6235". The Minor Planet Bulletin. 32 (3): 48–51. Bibcode:2005MPBu...32...48P. ISSN 1052-8091. Retrieved 15 June 2017.
    8. Behrend, Raoul. "Asteroids and comets rotation curves – (1927) Suvanto". Geneva Observatory. Retrieved 15 June 2017.
    9. Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 15 June 2017.
    10. "1927 Suvanto (1936 FP)". Minor Planet Center. Retrieved 15 June 2017.
    11. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 15 June 2017.

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