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]
| Discovery[1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Obs. |
| Discovery date | 12 September 1936 |
| Designations | |
| (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 | 6.21±0.35 km[4] 6.810±0.098 km[5] 7.175±0.089 km[6] 7.20 km (taken)[3] 7.204 km[7] 9.26±1.95 km[8] 12.18±1.1 km[9] |
| 6.051±0.001 h[a][b] | |
| 0.1432±0.029[9] 0.27±0.15[8] 0.3191[7] 0.3516±0.0646[6] 0.388±0.040[5] 0.458±0.068[4] | |
| S[3][10] | |
| 12.03 (R)[a] · 12.3[9] · 12.48[6] · 12.5[1][4][8] · 12.57±0.078[3][7] · 12.57±0.33[10] | |
Orbit and classification
editSibelius 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
editSibelius has been characterized as an S-type asteroid by Pan-STARRS photometric survey.[10]
Rotation period
editIn 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-).[a][b]
Diameter and albedo
editAccording 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
editThis minor planet was named for Jean Sibelius (1865–1957), Finnish violinist and composer of the late Romantic and early-modern periods.[2] The official naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3928).[12]
Notes
edit- ^ a b c Pravec (2007) web: rotation period 6.051±0.001 hours with a brightness amplitude of 0.11 mag. Summary figures for (1405) Sibelius at Collaborative Asteroid Lightcurve Link and Pravec, P.; Wolf, M.; Sarounova, L. (2007)
- ^ a b Lightcurve plot of (1405) Sibelius from October 2007; unpublished data.
References
edit- ^ a b c d "JPL Small-Body Database Browser: 1405 Sibelius (1936 RE)" (2017-07-02 last obs.). Jet Propulsion Laboratory. Retrieved 25 July 2017.
- ^ a b c Schmadel, Lutz D. (2007). "(1405) Sibelius". Dictionary of Minor Planet Names – (1405) Sibelius. Springer Berlin Heidelberg. p. 113. doi:10.1007/978-3-540-29925-7_1406. ISBN 978-3-540-00238-3.
- ^ a b c d e "LCDB Data for (1405) Sibelius". Asteroid Lightcurve Database (LCDB). Retrieved 10 January 2017.
- ^ a b c d 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.
- ^ a b c 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.
- ^ a b c d 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.
- ^ a b c d 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.
- ^ a b c d 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.
- ^ a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
- ^ a b c 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.
- ^ a b "1405 Sibelius (1936 RE)". Minor Planet Center. Retrieved 10 January 2017.
- ^ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.
External links
edit- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- 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 AstDyS-2, Asteroids—Dynamic Site
- 1405 Sibelius at the JPL Small-Body Database
