804 Hispania

804 Hispania
Discovery
Discovered byJ. Comas Solá
Discovery date20 March 1915
Designations
(804) Hispania
Pronunciation/hɪˈspeɪniə/[1][2]
Named after
Spain
1915 WT
Main belt
AdjectivesHispanian[2]
Orbital characteristics[3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc39,655 d (108.57 yr)
Aphelion3.2343 AU (483.84 Gm)
Perihelion2.4418 AU (365.29 Gm)
2.8381 AU (424.57 Gm)
Eccentricity0.13961
4.78 yr (1746.3 d)
17.60 km/s
277.552°
0° 12m 22.104s / day
Inclination15.395°
347.611°
344.626°
Earth MOID1.43481 AU (214.645 Gm)
Jupiter MOID2.16034 AU (323.182 Gm)
TJupiter3.244
Physical characteristics
Dimensions157.30 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~167.4K
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]

  1. ^ Cite error: The named reference Webster1884 was invoked but never defined (see the help page).
  2. ^ a b "Hispanian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  3. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference Carry2012 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Calabresi_Roselli_2001 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Busarev_Taran_2002 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Marchis2006 was invoked but never defined (see the help page).