1405 Sibelius
Discovery [1] | |
---|---|
Discovered by | Y. Väisälä |
Discovery site | Turku Obs. |
Discovery date | 12 September 1936 |
Designations | |
MPC designation | (1405) Sibelius |
Named after |
Jean Sibelius (Finnish composer)[2] |
1936 RE · 1951 CO 1953 VK3 · 1963 ST | |
main-belt · Flora [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 66.40 yr (24,254 days) |
Aphelion | 2.5817 AU |
Perihelion | 1.9215 AU |
2.2516 AU | |
Eccentricity | 0.1466 |
3.38 yr (1,234 days) | |
312.34° | |
0° 17m 30.12s / day | |
Inclination | 7.0301° |
312.08° | |
95.795° | |
Physical characteristics | |
Dimensions |
±0.35 km 6.21[4] ±0.098 km 6.810[5] ±0.089 km 7.175[6] 7.20 km (taken)[3] km 7.204[7] ±1.95 km 9.26[8] ±1.1 km 12.18[9] |
±0.001 6.051h[lower-alpha 1][lower-alpha 2] | |
±0.029 0.1432[9] ±0.15 0.27[8] 0.3191[7] ±0.0646 0.3516[6] ±0.040 0.388[5] ±0.068 0.458[4] | |
S [3][10] | |
12.03 (R)[lower-alpha 1] · 12.3[9] · 12.48[6] · 12.5[1][4][8] · ±0.078 12.57[3][7] · ±0.33 12.57[10] | |
|
1405 Sibelius, provisional designation 1936 RE, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 12 September 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.[11] The asteroid was named after composer Jean Sibelius.[2]
Orbit and classification
Sibelius is a member of the Flora family, one of the largest populations of stony asteroids in the entire main-belt. It orbits the Sun in the inner main-belt at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,234 days). Its orbit has an eccentricity of 0.15 and an inclination of 7° with respect to the ecliptic.[1] The body's observation arc begins with an observation taken at Turku two weeks prior to its official discovery observation.[11]
Physical characteristics
Sibelius has been characterized as an S-type asteroid by Pan-STARRS photometric survey.[10]
Rotation period
In October 2007, a rotational lightcurve of Sibelius was obtained from photometric observations taken by Petr Pravec at the Ondřejov Observatory in the Czech Republic. Lightcurve analysis gave a rotation period of 6.051 hours with a brightness variation of 0.11 magnitude (U=3-).[lower-alpha 1][lower-alpha 2]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS and NASA's Wide-field Infrared Survey Explorer (WISE) with its subsequent NEOWISE mission, Sibelius measures between 6.21 and 12.18 kilometers in diameter and its surface has an albedo between 0.14 and 0.48.[4][5][6][8][9] The Collaborative Asteroid Lightcurve Link adopts an albedo of 0.3191 and a diameter of 7.20 kilometers from Petr Pravec's revised WISE thermal observations.[3][7]
Naming
This minor planet was named for Jean Sibelius (1865–1957), Finnish violinist and composer of the late Romantic and early-modern periods.[2] The approved naming citation was published by the Minor Planet Center before November 1977 (M.P.C. 3928).[12]
Notes
- 1 2 3 Pravec (2007) web: rotation period ±0.001 hours with a brightness amplitude of 6.051 mag. Summary figures for (1405) Sibelius at 0.11Collaborative Asteroid Lightcurve Link and Pravec, P.; Wolf, M.; Sarounova, L. (2007)
- 1 2 Lightcurve plot of (1405) Sibelius from October 2007; unpublished data.
References
- 1 2 3 4 "JPL Small-Body Database Browser: 1405 Sibelius (1936 RE)" (2017-07-02 last obs.). Jet Propulsion Laboratory. Retrieved 25 July 2017.
- 1 2 3 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1405) Sibelius. Springer Berlin Heidelberg. p. 113. ISBN 978-3-540-00238-3. Retrieved 10 January 2017.
- 1 2 3 4 5 "LCDB Data for (1405) Sibelius". Asteroid Lightcurve Database (LCDB). Retrieved 10 January 2017.
- 1 2 3 4 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 10 January 2017.
- 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 10 January 2017.
- 1 2 3 4 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 10 January 2017.
- 1 2 3 4 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 10 January 2017.
- 1 2 3 4 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 10 January 2017.
- 1 2 3 4 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 10 January 2017.
- 1 2 3 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 10 January 2017.
- 1 2 "1405 Sibelius (1936 RE)". Minor Planet Center. Retrieved 10 January 2017.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 January 2017.
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