191 Kolga
Discovery | |
---|---|
Discovered by | C. H. F. Peters, 1878 |
Discovery date | 30 September 1878 |
Designations | |
Main belt | |
Orbital characteristics[1] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 131.26 yr (47942 d) |
Aphelion | 3.1588 AU (472.55 Gm) |
Perihelion | 2.6313 AU (393.64 Gm) |
2.8951 AU (433.10 Gm) | |
Eccentricity | 0.091106 |
4.93 yr (1799.2 d) | |
326.28° | |
0° 12m 0.288s / day | |
Inclination | 11.508° |
159.31° | |
227.00° | |
Earth MOID | 1.64648 AU (246.310 Gm) |
Jupiter MOID | 2.29413 AU (343.197 Gm) |
Jupiter Tisserand parameter | 3.253 |
Physical characteristics | |
Mean radius | ±1.75 50.515km |
17.625 hours[2] 17.604 h (0.7335 d)[1] | |
±0.003 0.0408 | |
9.07 | |
|
191 Kolga is a large, dark main-belt asteroid that was discovered by German-American astronomer C. H. F. Peters on September 30, 1878, in Clinton, New York. It is named after Kolga, the daughter of Ægir in Norse mythology.[3]
In 2009, Photometric observations of this asteroid were made at the Palmer Divide Observatory in Colorado Springs, Colorado. The resulting light curve shows a synodic rotation period of 17.625 ± 0.004 hours with a brightness variation of 0.30 ± 0.03 in magnitude. Previous independent studies produced inconsistent results that differ from this finding.[2]
References
- 1 2 Yeomans, Donald K., "191 Kolga", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 6 May 2016.
- 1 2 Warner, Brian D. (October 2009), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2009 March-June", The Minor Planet Bulletin, 36 (4), pp. 172–176, Bibcode:2009MPBu...36..172W, doi:10.1016/j.pss.2012.03.009.
- ↑ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names (6th ed.), Springer, p. 30, ISBN 3642297188.
External links
- 191 Kolga at the JPL Small-Body Database
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