3425 Hurukawa
| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 29 January 1929 |
| Designations | |
| MPC designation | 3425 Hurukawa |
|
Named after
|
Kiichirō Furukawa (astronomer) |
| 1929 BD · 1951 GB 1971 DJ1 · 1978 PN 1979 SG1 · 1981 DW3 A903 CB |
|
| main-belt · Eos | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.76 yr (41,551 days) |
| Aphelion | 3.2548 AU |
| Perihelion | 2.7469 AU |
| 3.0008 AU | |
| Eccentricity | 0.0846 |
| 5.20 yr (1,899 days) | |
| 28.299° | |
| 0° 11m 22.56s / day | |
| Inclination | 9.2120° |
| 291.51° | |
| 135.02° | |
| Physical characteristics | |
| Dimensions |
21.21±0.38 km 25.25 km (derived) 25.36±2.8 km 25.4 km 27.81±0.54 km |
|
16 h 24.8158±0.0402 h 24.84±0.01 h |
|
|
0.100±0.004 0.1103 (derived) 0.1315 0.171±0.026 |
|
| S | |
| 10.75±0.27 · 10.8 · 10.837±0.002 (R) · 10.9 · 11.0 | |
3425 Hurukawa, provisional designation 1929 BD, is a stony Eos asteroid from the outer region of the asteroid belt, approximately 25 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 29 January 1929.
The asteroid is a member of the Eos family, an orbital group of more than 4,000 asteroids, which are well known for mostly being of a stony S-type composition with relatively high albedos. It orbits the Sun at a distance of 2.7–3.3 AU once every 5 years and 2 months (1,899 days). Its orbit has an eccentricity of 0.08 and an inclination of 9° with respect to the ecliptic. The first precovery was taken at the discovering observatory in 1903, extending the asteroid's observation arc by 26 years prior to its discovery.
A rotational light-curve was obtained for this asteroid from photometric observations taken by French astronomer Raymond Poncy in September 2005. It gave a well-defined, slightly longer-than-average rotation period of 24.84±0.01 hours with a brightness variation of 0.47 in magnitude (U=3-). The period was confirmed by observations taken at the U.S. Palomar Transient Factory in August 2010, which rendered a period of 24.8158±0.0402 hours and an amplitude of 0.17 (U=2), superseding a third period of 16 hours from a fragmentary light-curve obtained by French astronomer René Roy in 2007 (U=1).
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