1405 Sibelius

1405 Sibelius
Discovery [1]
Discovered by Y. Väisälä
Discovery site Turku Observatory
Discovery date 12 September 1936
Designations
MPC designation 1405 Sibelius
Named after
 Jean Sibelius
(composer)[2]
1936 RE · 1951 CO
1953 VK3 · 1963 ST
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 64.28 yr (23,477 days)
Aphelion 2.5808 AU
Perihelion 1.9237 AU
2.2522 AU
Eccentricity 0.1458
3.38 yr (1,235 days)
78.833°
Inclination 7.0327°
312.11°
95.915°
Physical characteristics
Dimensions 12.18 km[4]
7.175±0.089 km[5]
7.204 km[6]
6.21±0.35 km[7]
7.20 km (taken)[3]
6.051 h[lower-alpha 1]
0.1432[4]
0.3516±0.0646[5]
0.3191[6]
0.458±0.068[7]
S [3]
12.5

    1405 Sibelius, provisional designation 1936 RE, is a stony asteroid from the inner regions of the asteroid belt, about 7 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 12 September 1936.[8]

    The asteroid is a member of the Flora family, a large group of stony S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,235 days). Its orbit shows an eccentricity of 0.15 and is tilted by 7 degrees to the plane of the ecliptic. It has a rotation period of 6.1 hours[lower-alpha 1] and a geometric albedo of 0.14 to 0.46, according to the surveys carried out by the Infrared Astronomical Satellite, IRAS, the Wide-field Infrared Survey Explorer and subsequent NEOWISE mission.[4][5][7]

    The minor planet was named after Finnish violinist and composer of the late Romantic and early-modern periods, Jean Sibelius (1865–1957).[2]

    References

    1. 1 2 Pravec (2007) web: rotation period 6.051±0.001 hours with a brightness amplitude of 0.11 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1405) Sibelius
    1. 1 2 "JPL Small-Body Database Browser: 1405 Sibelius (1936 RE)" (2015-05-17 last obs.). Jet Propulsion Laboratory. Retrieved November 2015.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1405) Sibelius. Springer Berlin Heidelberg. p. 113. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 "LCDB Data for (1405) Sibelius". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved November 2015.
    5. 1 2 3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; 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 November 2015.
    6. 1 2 Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved November 2015.
    7. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; 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 November 2015.
    8. ↑ "1405 Sibelius (1936 RE)". Minor Planet Center. Retrieved November 2015.

    External links


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