![]() Orbital diagram | |
Discovery | |
---|---|
Discovered by | C. H. F. Peters |
Discovery date | 30 September 1878 |
Designations | |
(191) Kolga | |
Pronunciation | /ˈkɒlɡə/ |
Named after | Kólga |
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) |
TJupiter | 3.253 |
Physical characteristics | |
Dimensions | (134.3±12.8) × (78.2±1.7) km [2] |
94.536±0.433 km [1] | |
Mass | (7.24 ± 4.11/2.17)×1017 kg [3] |
Mean
density | 1.637 ± 0.928/0.491 g/cm3 [3] |
17.625 hours
[4] 17.604 h (0.7335 d) [1] | |
0.0408±0.003 | |
9.07 | |
191 Kolga ( minor planet designation: 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 Kólga, the daughter of Ægir in Norse mythology. [5]
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. [4]
![]() Orbital diagram | |
Discovery | |
---|---|
Discovered by | C. H. F. Peters |
Discovery date | 30 September 1878 |
Designations | |
(191) Kolga | |
Pronunciation | /ˈkɒlɡə/ |
Named after | Kólga |
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) |
TJupiter | 3.253 |
Physical characteristics | |
Dimensions | (134.3±12.8) × (78.2±1.7) km [2] |
94.536±0.433 km [1] | |
Mass | (7.24 ± 4.11/2.17)×1017 kg [3] |
Mean
density | 1.637 ± 0.928/0.491 g/cm3 [3] |
17.625 hours
[4] 17.604 h (0.7335 d) [1] | |
0.0408±0.003 | |
9.07 | |
191 Kolga ( minor planet designation: 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 Kólga, the daughter of Ægir in Norse mythology. [5]
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. [4]