Discovery | |
---|---|
Discovered by | J. Comas Solá |
Discovery date | 20 March 1915 |
Designations | |
(804) Hispania | |
Pronunciation | /hɪˈspeɪniə/ [1] [2] |
Named after | Spain |
1915 WT | |
Main belt | |
Adjectives | Hispanian [2] |
Orbital characteristics [3] | |
Epoch 31 July 2016 ( JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 39,655 d (108.57 yr) |
Aphelion | 3.2343 AU (483.84 Gm) |
Perihelion | 2.4418 AU (365.29 Gm) |
2.8381 AU (424.57 Gm) | |
Eccentricity | 0.13961 |
4.78 yr (1746.3 d) | |
Average
orbital speed | 17.60 km/s |
277.552 ° | |
0° 12m 22.104s / day | |
Inclination | 15.395° |
347.611° | |
344.626° | |
Earth MOID | 1.43481 AU (214.645 Gm) |
Jupiter MOID | 2.16034 AU (323.182 Gm) |
TJupiter | 3.244 |
Physical characteristics | |
Dimensions | 157.30 km[ citation needed] |
78.79±2.9
km
[3] 74.125±2.04 km [4] | |
Mass | (5.00±1.78)×1018 kg [4] |
Mean
density | 2.93±1.06 g/cm3 [4] |
Equatorial
surface gravity | ~0.107m/s2 |
Equatorial
escape velocity | ~129.9m/s |
14.845
h (0.6185
d)
[3] 7.405±0.010 h [5] | |
0.0520±0.004 | |
Temperature | ~167.4 K |
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.
Hispania is a carbonaceous C-type asteroid. Busarev and Taran (2002) classed it as CP type with a spectrum that shows a highly hydrated body. [6] It has a diameter of 122 kilometers according to measurements made with the W. M. Keck Observatory. 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. [7] Two alternate rotation periods have been found for this asteroid: 7.4 hours and double that at 14.8 hours. To explain this discrepancy, it is possible the asteroid has a peculiar shape or it may be a double asteroid. [4]
Discovery | |
---|---|
Discovered by | J. Comas Solá |
Discovery date | 20 March 1915 |
Designations | |
(804) Hispania | |
Pronunciation | /hɪˈspeɪniə/ [1] [2] |
Named after | Spain |
1915 WT | |
Main belt | |
Adjectives | Hispanian [2] |
Orbital characteristics [3] | |
Epoch 31 July 2016 ( JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 39,655 d (108.57 yr) |
Aphelion | 3.2343 AU (483.84 Gm) |
Perihelion | 2.4418 AU (365.29 Gm) |
2.8381 AU (424.57 Gm) | |
Eccentricity | 0.13961 |
4.78 yr (1746.3 d) | |
Average
orbital speed | 17.60 km/s |
277.552 ° | |
0° 12m 22.104s / day | |
Inclination | 15.395° |
347.611° | |
344.626° | |
Earth MOID | 1.43481 AU (214.645 Gm) |
Jupiter MOID | 2.16034 AU (323.182 Gm) |
TJupiter | 3.244 |
Physical characteristics | |
Dimensions | 157.30 km[ citation needed] |
78.79±2.9
km
[3] 74.125±2.04 km [4] | |
Mass | (5.00±1.78)×1018 kg [4] |
Mean
density | 2.93±1.06 g/cm3 [4] |
Equatorial
surface gravity | ~0.107m/s2 |
Equatorial
escape velocity | ~129.9m/s |
14.845
h (0.6185
d)
[3] 7.405±0.010 h [5] | |
0.0520±0.004 | |
Temperature | ~167.4 K |
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.
Hispania is a carbonaceous C-type asteroid. Busarev and Taran (2002) classed it as CP type with a spectrum that shows a highly hydrated body. [6] It has a diameter of 122 kilometers according to measurements made with the W. M. Keck Observatory. 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. [7] Two alternate rotation periods have been found for this asteroid: 7.4 hours and double that at 14.8 hours. To explain this discrepancy, it is possible the asteroid has a peculiar shape or it may be a double asteroid. [4]