804 Hispania
| Discovery | |
|---|---|
| Discovered by | J. Comas Solá |
| Discovery date | March 20, 1915 |
| Designations | |
Named after | Spain |
| 1915 WT | |
| Main belt | |
| Orbital characteristics | |
| Epoch 18 August 2005 (JD 2453600.5) | |
| Aphelion | 484.2 Gm (3.237 AU) |
| Perihelion | 364.6 Gm (2.437 AU) |
| 424.4 Gm (2.837 AU) | |
| Eccentricity | 0.141 |
| 1745 d (4.778 a) | |
Average orbital speed | 17.60 km/s |
| 175.732° | |
| Inclination | 15.380° |
| 347.889° | |
| 342.525° | |
| Physical characteristics | |
| Dimensions | 148.25 ± 4.08[1] km |
| Mass | (5.00 ± 1.78) × 1018[1] kg |
Mean density | 2.93 ± 1.06[1] g/cm3 |
| ~0.107m/s2 | |
| ~129.9m/s | |
| 7.405hr | |
| Albedo | 0.0522 |
| Temperature | ~167.4K |
Spectral type | P |
| 7.84 | |
|
| |
804 Hispania is a minor planet orbiting the Sun. It was discovered from Barcelona (Spain) on 20 March 1915 by Josep Comas Solá (1868–1937), the first asteroid to be discovered by a Spaniard.
This is a C-type carbonaceous asteroid. Measurements made with adaptive optics at the W. M. Keck Observatory put the size of this object at 122 km. This is 30% smaller than the size estimated from the IRAS observatory data. It has a size ratio of 1.16 between its major and minor axes.[2]
References
- ↑ 1.0 1.1 1.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ↑ Marchis, F. et al. (November 2006), "Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey", Icarus 185 (1): 39–63, Bibcode:2006Icar..185...39M, doi:10.1016/j.icarus.2006.06.001, PMC 2600456, PMID 19081813, retrieved 2013-03-27.
External links
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