1535 Päijänne
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 9 September 1939 |
| Designations | |
| MPC designation | 1535 Päijänne |
Named after | Lake Päijänne (lake)[2] |
|
1939 RC · 1933 QE1 1944 OA · 1956 XB 1985 XE2 · A916 OB | |
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 82.64 yr (30183 days) |
| Aphelion | 3.7704 AU (564.04 Gm) |
| Perihelion | 2.5588 AU (382.79 Gm) |
| 3.1646 AU (473.42 Gm) | |
| Eccentricity | 0.19143 |
| 5.63 yr (2056.3 d) | |
| 313.10° | |
| 0° 10m 30.288s / day | |
| Inclination | 6.0562° |
| 264.80° | |
| 39.876° | |
| Earth MOID | 1.54685 AU (231.405 Gm) |
| Jupiter MOID | 1.48383 AU (221.978 Gm) |
| Jupiter Tisserand parameter | 3.167 |
| Physical characteristics | |
| Dimensions |
26.72 km[4] 26.12±0.42 km[5] 25.518±0.187 km[6] 26.43 km (derived)[3] |
Mean radius | 13.36±0.5 km |
| 8.8448 h (0.36853 d)[1][7] | |
|
0.1299[4] 0.140±0.005[5] 0.1430±0.0230[6] 0.0764 (derived)[3] 0.1299±0.011[1] | |
| S [3] | |
| 11.4 | |
|
| |
1535 Päijänne, provisional designation 1939 RC, is a stony asteroid from the outer region of the asteroid belt, about 27 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at the Turku Observatory in the southwestern parts of Finland, on 9 September 1939.[8]
The S-type asteroid orbits the Sun at a distance of 2.6–3.8 AU once every 5 years and 8 months (2,060 days). Its orbit shows an eccentricity of 0.19 and is tilted by 6 degrees to the plane of the ecliptic. It has a rotation period of 8.8 hours, observed by French astronomer Laurent Bernasconi.[7] The body's albedo has been identified to be 0.13–0.14, according to observations made by the Infrared Astronomical Satellite, IRAS, the Japanese Akari satellite, and the Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission.[4][5][6]
The asteroid was named after Finland's second largest lake, Päijänne, located in south-central Finland, and more than a thousand square kilometers in size.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 1535 Paijanne (1939 RC)" (2015-04-23 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1535) Päijänne. Springer Berlin Heidelberg. p. 122. ISBN 978-3-540-29925-7. Retrieved 25 November 2015.
- 1 2 3 4 "LCDB Data for (1535) Paijanne". Asteroid Lightcurve Database (LCDB). Retrieved 25 November 2015.
- 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 25 November 2015.
- 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 25 November 2015.
- 1 2 3 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. Retrieved 25 November 2015. - 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1535) Paijanne". Geneva Observatory. Retrieved 25 November 2015.
- ↑ "1535 Paijanne (1939 RC)". Minor Planet Center. Retrieved 25 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
- 1535 Päijänne at the JPL Small-Body Database
