1405 Sibelius
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 12 September 1936 |
| Designations | |
| 1405 Sibelius | |
Named after | Jean Sibelius (composer)[2] |
| 1936 RE · 1951 CO 1953 VK3 · 1963 ST | |
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 65.20 yr (23814 days) |
| Aphelion | 2.5812 AU (386.14 Gm) |
| Perihelion | 1.9215 AU (287.45 Gm) |
| 2.2513 AU (336.79 Gm) | |
| Eccentricity | 0.14651 |
| 3.38 yr (1233.8 d) | |
| 195.55° | |
| 0° 17m 30.408s / day | |
| Inclination | 7.0305° |
| 312.08° | |
| 95.862° | |
| Earth MOID | 0.945072 AU (141.3808 Gm) |
| Jupiter MOID | 2.79419 AU (418.005 Gm) |
| TJupiter | 3.603 |
| 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] |
Mean radius | 6.09±0.55 km |
| 6.051 h (0.2521 d)[a][1] | |
| 0.1432[4] 0.3516±0.0646[5] 0.3191[6] 0.458±0.068[7] 0.1432±0.029[1] | |
| 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[a] 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
- ^ a b 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
- ^ a b c d "JPL Small-Body Database Browser: 1405 Sibelius (1936 RE)" (2015-05-17 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
- ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1405) Sibelius. Springer Berlin Heidelberg. p. 113. ISBN 978-3-540-29925-7. Retrieved 20 November 2015.
- ^ a b c "LCDB Data for (1405) Sibelius". Asteroid Lightcurve Database (LCDB). Retrieved 20 November 2015.
- ^ a b c 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 20 November 2015.
- ^ a b c 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 20 November 2015.
- ^ a b 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 20 November 2015.
- ^ a b c 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 20 November 2015.
- ^ "1405 Sibelius (1936 RE)". Minor Planet Center. Retrieved 20 November 2015.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1405 Sibelius at the JPL Small-Body Database
- Pravec, P.; Wolf, M.; Sarounova, L. (2007) http://www.asu.cas.cz/~ppravec/neo.htm
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