Cytser Gemini
Cytser y Sidydd yw Gemini sef gair Lladin am 'efeilliaid'.
Mae wedi'i leoli rhwng Taurus a Cancer. Ei symbol yw 
(Unicode ♊). Mae'n un o 88 cytser a restrwyd gan yr athronydd Ptolemi yn yr Ail ganrif.
 | |
| Enghraifft o'r canlynol | cytser, cytser zodiacal  |
|---|---|
| Rhan o | Northern celestial hemisphere |
 Ffeiliau perthnasol ar Gomin Wicimedia | |
Gwrthrychau
- IC 443
- NGC 2392
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