1449 Virtanen
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 20 February 1938 |
| Designations | |
| MPC designation | 1449 Virtanen |
Named after |
Artturi Virtanen (biochemist)[2] |
| 1938 DO · 1928 DC | |
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 87.64 yr (32,012 days) |
| Aphelion | 2.5374 AU |
| Perihelion | 1.9081 AU |
| 2.2227 AU | |
| Eccentricity | 0.1415 |
| 3.31 yr (1,210 days) | |
| 51.082° | |
| Inclination | 6.6410° |
| 110.79° | |
| 132.17° | |
| Physical characteristics | |
| Dimensions |
9.947±0.092 km[4] 9.46±0.33 km[5] 10.80 km (calculated)[3] |
|
30.495 h[6] 30.52±0.01 h[7] 30.5±0.5 h[7] 30.5421±0.3727 h[8] 14.770±0.440 h[9] | |
|
0.2856±0.0274[4] 0.285±0.038[5] 0.24 (assumed)[3] | |
|
Tholen = S S [3] | |
| 12.1 | |
|
| |
1449 Virtanen, provisional designation 1938 DO, is a stony asteroid from the inner regions of the asteroid belt, about 10 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 20 February 1938.[10]
The asteroid is a member of the Flora family, a large group of rocky S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 1.9–2.5 AU once every 3 years and 4 months (1,210 days). Its orbit shows an eccentricity of 0.14 and is tilted by 7 degrees to the plane of the ecliptic. It has an albedo of 0.28, based on observations by the Wide-field Infrared Survey Explorer.[4][5]
Photometric observations during 2008 showed a rotation period of 30.459 ± 0.005 hours and a brightness variation of 0.60 ± 0.02 in magnitude.[6]
The asteroid was named after famous Finnish biochemist Artturi Virtanen (1895–1973), recipient of the 1945 Nobel Prize in Chemistry and president of the Academy of Finland for many years.[2]
References
- 1 2 "JPL Small-Body Database Browser: 1449 Virtanen (1938 DO)" (2015-10-17 last obs.). Jet Propulsion Laboratory. Retrieved November 2015.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1449) Virtanen. Springer Berlin Heidelberg. p. 116. ISBN 978-3-540-29925-7. Retrieved November 2015.
- 1 2 3 4 "LCDB Data for (1449) Virtanen". Asteroid Lightcurve Database (LCDB). 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 Oey, Julian (October 2009). "Lightcurve Analysis of Asteroids from Leura and Kingsgrove Observatory in the Second Half of 2008". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 36 (4): 162–164. Bibcode:2009MPBu...36..162O. ISSN 1052-8091. Retrieved November 2015.
- 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1449) Virtanen". Geneva Observatory. Retrieved November 2015.
- ↑ 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 November 2015.
- ↑ Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series 219 (2): 19. arXiv:1506.08493. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved November 2015.
- ↑ "1449 Virtanen (1938 DO)". 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
- 1449 Virtanen at the JPL Small-Body Database
| ||||||
| ||||||||||||||||||||||||||||