1680 Per Brahe
| Discovery [1] | |
|---|---|
| Discovered by | L. Oterma |
| Discovery site | Turku Observatory |
| Discovery date | 12 February 1942 |
| Designations | |
| MPC designation | 1680 Per Brahe |
Named after |
Per Brahe the Younger (Count and Governor)[2] |
|
1942 CH · 1934 PP 1937 AA · 1937 AY 1938 JA · 1943 PC 1949 XL · 1952 OG 1953 VD1 · 1960 FF A902 JA | |
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.61 yr (41495 days) |
| Aphelion | 3.2207 AU (481.81 Gm) |
| Perihelion | 2.2306 AU (333.69 Gm) |
| 2.7257 AU (407.76 Gm) | |
| Eccentricity | 0.18163 |
| 4.50 yr (1643.7 d) | |
| 86.765° | |
| 0° 13m 8.472s / day | |
| Inclination | 4.2604° |
| 83.353° | |
| 158.60° | |
| Earth MOID | 1.21745 AU (182.128 Gm) |
| Jupiter MOID | 1.79393 AU (268.368 Gm) |
| Jupiter Tisserand parameter | 3.329 |
| Physical characteristics | |
| Dimensions |
14.20 km[4] 18.29±0.70 km[5] 14.848±0.130 km[6] 15.45±1.32 km[7] 14.36 km (derived)[3] |
Mean radius | 7.10 ± 0.4 km |
|
3.428 h (0.1428 d)[1][3] 3.444±0.007 h[8] 3.44 h[8] 3.426±0.002 h[9] | |
|
0.2903[4] 0.178±0.015[5] 0.2722±0.0223[6] 0.407±0.294[7] 0.3409 (derived)[3] 0.2903 ± 0.038[1] | |
|
SMASS = S S [3] | |
| 11.0 | |
|
| |
1680 Per Brahe, provisional designation 1942 CH, is a bright, stony asteroid from the outer region of the asteroid belt, about 15 kilometers in diameter. It was discovered by Finnish female astronomer Liisi Oterma at Turku Observatory on 12 February 1942.[10]
The asteroid orbits the Sun at a distance of 2.2–3.2 AU once every four and a half years (1,644 days). Its orbit shows an eccentricity of 0.18 and is tilted by 4 degrees to the plane of the ecliptic. Light-curve photometry carried out in 2006 and 2012, rendered a rotation period of 3.4 hours.[8][9] The geometric albedo of the S-type asteroid varies between 0.18 and 0.40, based on the different results from the IRAS, Akari, WISE and NEOWISE surveys.[4][5][6][7]
The minor planet was named after Swedish count Per Brahe (1602–1680), who was Governor General of Finland in the 17th century. His prosperous legacy saw the establishment of Academia Aboensis, the first university in Finland, the construction of various new towns and many schools, and the publication of the first Finnish Bible.[2]
References
- 1 2 3 4 "JPL Small-Body Database Browser: 1680 Per Brahe (1942 CH)" (2015-10-24 last obs.). Jet Propulsion Laboratory. Retrieved 22 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1680) Per Brahe. Springer Berlin Heidelberg. p. 133. ISBN 978-3-540-29925-7. Retrieved November 2015.
- 1 2 3 4 5 "LCDB Data for (1680) Per Brahe". Asteroid Lightcurve Database (LCDB). Retrieved 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 November 2015.
- 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; 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 November 2015.
- 1 2 3 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 November 2015.
- 1 2 3 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 November 2015.
- 1 2 3 Behrend, Raoul. "Asteroids and comets rotation curves – (1680) Per Brahe". Geneva Observatory. Retrieved November 2015.
- 1 2 Stephens, Robert D.; Warner, Brian D. (April 2013). "Lightcurves for 110 Lydia and 1680 Per Brahe". The Minor Planet Bulletin 40 (2): 93–94. Bibcode:2013MPBu...40...93S. ISSN 1052-8091. Retrieved November 2015.
- ↑ "1680 Per Brahe (1942 CH)". Minor Planet Center. Retrieved 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
- 1680 Per Brahe at the JPL Small-Body Database
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