1451 Granö
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 22 February 1938 |
| Designations | |
| MPC designation | 1451 Grano |
Named after |
J. G. Granö (University of Turku)[2] |
| 1938 DT · 1976 WK | |
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 55.04 yr (20105 days) |
| Aphelion | 2.4630 AU (368.46 Gm) |
| Perihelion | 1.9439 AU (290.80 Gm) |
| 2.2035 AU (329.64 Gm) | |
| Eccentricity | 0.11780 |
| 3.27 yr (1194.7 d) | |
| 300.31° | |
| 0° 18m 4.788s / day | |
| Inclination | 5.1086° |
| 175.29° | |
| 51.945° | |
| Earth MOID | 0.939332 AU (140.5221 Gm) |
| Jupiter MOID | 2.51732 AU (376.586 Gm) |
| Jupiter Tisserand parameter | 3.649 |
| Physical characteristics | |
| Dimensions |
9.70±0.57 km[4] 6.329±0.037 km[5] 7.13 km (calculated)[3] |
|
138.00 h (5.750 d)[1][6] 5.109±0.004 h[lower-alpha 1] | |
|
0.171±0.022[4] 0.4034±0.0919[5] 0.20 (assumed)[3] | |
|
S [3] | |
| 13.2 | |
|
| |
1451 Granö, provisional designation 1938 DT, is a stony asteroid and slow rotator from the inner regions of the asteroid belt, about 8 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 22 February 1938.[7]
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 3 months (1,194 days). Its orbit shows an eccentricity of 0.12 and is tilted by 5 degrees to the plane of the ecliptic. It has a very long rotation period of 138 hours[6] and an assumed albedo of 0.20, while observations from the Akari and NEOWISE surveys gave 0.17 and 0.40, respectively.[4][5]
The asteroid was named after Finnish professor of geography and rector at the University of Turku from 1932 to 1934, J. G. Granö (1882−1956)[2]
References
- ↑ Behrend (2007) web: rotation period 5.109±0.004 hours with a brightness amplitude of 0.06 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1451) Grano. Results are no longer published on website, see: Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend]
- 1 2 3 "JPL Small-Body Database Browser: 1451 Grano (1938 DT)" (2015-10-17 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1451) Granö. Springer Berlin Heidelberg. p. 116. ISBN 978-3-540-29925-7. Retrieved 20 November 2015.
- 1 2 3 4 "LCDB Data for (1451) Grano". Asteroid Lightcurve Database (LCDB). Retrieved 20 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 20 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 20 November 2015. - 1 2 Stephens, Robert D. (October 2010). "Asteroids Observed from GMARS and Santana Observatories: 2010 April - June". The Minor Planet Bulletin. 37 (4): 159–161. Bibcode:2010MPBu...37..159S. ISSN 1052-8091. Retrieved 20 November 2015.
- ↑ "1451 Grano (1938 DT)". Minor Planet Center. Retrieved 20 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
- 1451 Granö at the JPL Small-Body Database
