1750 Eckert
| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 15 July 1950 |
| Designations | |
| MPC designation | (1750) Eckert |
|
Named after
|
Wallace Eckert (astronomer) |
| 1950 NA1 · 1950 OA | |
| Mars-crosser · Hungaria | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 66.07 yr (24,133 days) |
| Aphelion | 2.2593 AU |
| Perihelion | 1.5931 AU |
| 1.9262 AU | |
| Eccentricity | 0.1729 |
| 2.67 yr (976 days) | |
| 272.24° | |
| Inclination | 19.085° |
| 273.76° | |
| 109.02° | |
| Earth MOID | 0.6933 AU |
| Physical characteristics | |
| Dimensions |
6.95±0.21 km 6.97 km (calculated) |
|
4.49±0.01 h (dated) 375±5 h 377.5±0.5 h |
|
| 0.20 (assumed) 0.203±0.013 |
|
|
B–V = 0.885 U–B = 0.500 Tholen = S · S |
|
| 13.15 · 13.67±0.33 | |
1750 Eckert, provisional designation 1950 NA1, is a stony slow rotating Hungaria asteroid and Mars-crosser from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 15 July 1950, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. It was named after American astronomer Wallace Eckert.
The Mars crossing asteroid is also a member of the Hungaria family, a group that forms the innermost dense concentration of asteroids in the Solar System. It orbits the Sun at a distance of 1.6–2.3 AU once every 2 years and 8 months (976 days). Its orbit has an eccentricity of 0.17 and an inclination of 19° with respect to the ecliptic. As no precoveries were taken, and no prior identifications were made, Eckert's observation arc begins with its official discovery observation.
In October 2009, a rotational light-curve of Eckert was obtained by American astronomer Brian D. Warner at his Palmer Divide Observatory in Colorado. It gave an exceptionally long rotation period of 375 hours with a brightness variation of 0.87 magnitude (U=3-). A modeled light-curve obtained from the Lowell Photometric Database in 2016, gave a similar period of 377.5 hours (U=n.a.).Eckert has the sixth-longest rotation period of all known Mars-crossers.
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