1525 Savonlinna
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 18 September 1939 |
| Designations | |
| MPC designation | 1525 Savonlinna |
Named after |
Savonlinna (Finnish town)[2] |
| 1939 SC · 1930 SE | |
| main-belt · (middle) [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.54 yr (31243 days) |
| Aphelion | 3.4108 AU (510.25 Gm) |
| Perihelion | 1.9813 AU (296.40 Gm) |
| 2.6961 AU (403.33 Gm) | |
| Eccentricity | 0.26511 |
| 4.43 yr (1617.0 d) | |
| 146.72° | |
| 0° 13m 21.504s / day | |
| Inclination | 5.8640° |
| 279.27° | |
| 64.552° | |
| Earth MOID | 0.981155 AU (146.7787 Gm) |
| Jupiter MOID | 2.04184 AU (305.455 Gm) |
| Jupiter Tisserand parameter | 3.311 |
| Physical characteristics | |
| Dimensions |
12.18 km (IRAS)[1] 12.23±0.14 km[4] 12.06 km (derived)[3] |
Mean radius | 6.09±0.45 km |
|
14.634 h (0.6098 d)[1][5] 22.8406±0.0296 h[6] | |
|
0.1306±0.020 (IRAS)[1] 0.045±0.027[4] 0.0840 (derived)[3] | |
| S [3] | |
| 12.9[1] | |
|
| |
1525 Savonlinna, provisional designation 1939 SC, is an eccentric, stony asteroid from the middle region of the asteroid belt, about 12 kilometers in diameter. It was discovered on 18 September 1939, by Finnish astronomer Yrjö Väisälä at the Turku Observatory in southwestern Finland.[7]
The asteroid orbits the Sun at a distance of 2.0–3.4 AU once every 4 years and 5 months (1,616 days). Its orbit is tilted by 6 degrees to the plane of the ecliptic and shows a relatively high eccentricity of 0.27. It has a divergent rotation period of 14.6 and 22.8 hours, based on two different observations made in 2012 and 2015, respectively.[5][6] According to a preliminary analysis of WISE/NEOWISE cryogenic and post-cryogenic observations, the body has an albedo of 0.05,[1] while the Infrared Astronomical Satellite, IRAS, observed an albedo of 0.13, and the Collaborative Asteroid Lightcurve Link derives a value of 0.08, which is unusually low for an assumed S-type asteroid.[3]
The minor planet was named for the eastern Finnish town Savonlinna, located in the heart of the Saimaa lake region.[2]
References
- 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 1525 Savonlinna (1939 SC)" (2015-11-13 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1525) Savonlinna. Springer Berlin Heidelberg. p. 121. ISBN 978-3-540-29925-7. Retrieved 7 December 2015.
- 1 2 3 4 5 "LCDB Data for (1525) Savonlinna". Asteroid Lightcurve Database (LCDB). Retrieved 7 December 2015.
- 1 2 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 7 December 2015. - 1 2 Gartrelle, Gordon M. (April 2012). "Lightcurve Results for Eleven Asteroids". The Minor Planet Bulletin. 39 (2): 40–46. Bibcode:2012MPBu...39...40G. ISSN 1052-8091. Retrieved 7 December 2015.
- 1 2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 7 December 2015.
- ↑ "1525 Savonlinna (1939 SC)". Minor Planet Center. Retrieved 7 December 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
- 1525 Savonlinna at the JPL Small-Body Database
