Hygiea (planetka)
| Hygiea | |
|---|---|
 | |
| Symbol planety | |
| Identifikátory | |
| Typ | planetka |
| Označení | (10) Hygiea |
| Katalogové číslo | 10 |
| Objeveno | |
| Datum | 12. dubna 1849 |
| Místo | Neapol |
| Objevitel | Annibale de Gasparis |
| Jméno po | Hygieia |
| Elementy dráhy (Ekvinokcium J2000,0) | |
| Epocha | 2004-07-14 2453200,5 JD |
| Velká poloosa | 469,345 mil. km 3,137 au |
| Výstřednost | 0,119 |
| Perihel | 413,78 mil. km 2,763 au |
| Afel | 525,311 mil. km 3,511 au |
| Perioda (oběžná doba) | 2029,776 d (5,56 a) |
| Sklon dráhy | |
| - k ekliptice | 3,842° |
| Délka vzestupného uzlu | 283,646° |
| Argument šířky perihelu | 313,557° |
| Střední anomálie | 273,788° |
| Fyzikální charakteristiky | |
| Absolutní hvězdná velikost | 5,43 |
| Rovníkový průměr | 500×385×350 km |
| Hmotnost | 1,0×1020 kg |
| Průměrná hustota | 2,76 g/cm³ |
| Gravitace na rovníku | 0,091 m/s² |
| Úniková rychlost | 210 km/s |
| Albedo | 0,072 |
| Spektrální třída | planetka typu C |
(10) Hygiea je čtvrtá největší planetka hlavního pásu. Objevil ji 12. dubna 1849 Annibale de Gasparis v italském městě Neapol.
Odkazy
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Související články
- Seznam planetek 1-250
Externí odkazy
Obrázky, zvuky či videa k tématu Hygiea na Wikimedia Commons - (10) Hygiea na webu České astronomické společnosti
Média použitá na této stránce
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Hygiea astrological symbol (fixed width).svg
Autor: Kwamikagami, Licence: CC BY-SA 4.0
The astrological symbol for asteroid 10 Hygiea, a caduceus: U+2BDA ⯚. This was a mistake for the rod of Asclepsius, Hygiea's masculine counterpart, which in turn was a substitution for Hygiea's actual symbol, a snake).
Autor: Kwamikagami, Licence: CC BY-SA 4.0
The astrological symbol for asteroid 10 Hygiea, a caduceus: U+2BDA ⯚. This was a mistake for the rod of Asclepsius, Hygiea's masculine counterpart, which in turn was a substitution for Hygiea's actual symbol, a snake).
Hygiea symbol (planetary color).svg
Autor: Kwamikagami, Licence: CC BY-SA 4.0
white symbol for Hygiea on a wine (CA1F7B) background
Autor: Kwamikagami, Licence: CC BY-SA 4.0
white symbol for Hygiea on a wine (CA1F7B) background
SPHERE image of Hygiea.jpg
Autor: ESO/P. Vernazza et al./MISTRAL algorithm (ONERA/CNRS), Licence: CC BY 4.0
A new SPHERE/VLT image of Hygiea, which could be the Solar System’s smallest dwarf planet yet. As an object in the main asteroid belt, Hygiea satisfies right away three of the four requirements to be classified as a dwarf planet: it orbits around the Sun, it is not a moon and, unlike a planet, it has not cleared the neighbourhood around its orbit. The final requirement is that it have enough mass that its own gravity pulls it into a roughly spherical shape. This is what VLT observations have now revealed about Hygiea. Credit: ESO/P. Vernazza et al./MISTRAL algorithm (ONERA/CNRS)
Autor: ESO/P. Vernazza et al./MISTRAL algorithm (ONERA/CNRS), Licence: CC BY 4.0
A new SPHERE/VLT image of Hygiea, which could be the Solar System’s smallest dwarf planet yet. As an object in the main asteroid belt, Hygiea satisfies right away three of the four requirements to be classified as a dwarf planet: it orbits around the Sun, it is not a moon and, unlike a planet, it has not cleared the neighbourhood around its orbit. The final requirement is that it have enough mass that its own gravity pulls it into a roughly spherical shape. This is what VLT observations have now revealed about Hygiea. Credit: ESO/P. Vernazza et al./MISTRAL algorithm (ONERA/CNRS)