| Fictional info (?) |
|---|
| Suggested name | Zyuan Zyuan |
| Planet type | Cold planet |
| This planet is named after the deity Zyuan Zyuan, the goddess of good fortune.
Zyuan Zyuan is gravitationally locked with Kepler-1557 in a 4:3 spin-orbit resonance, and rotates in a way that is unique in its solar system.
Zyuan Zyuan's dense atmosphere make observation of its surface difficult in visible light, and the first detailed maps did not emerge until the arrival of the Magellan orbiter 58 years ago.
Zyuan Zyuan has been explored on several occasions by robotic spacecraft, most notably during the early Pioneer and Frontier flyby missions and later by the Hotchins orbiter. |
| Atmosphere | Hydrogen chloride | 89% |
| Hydrogen deuteride (HD) | 6.8% |
| Carbon dioxide | 3.7% |
| 2H2O | 0.13% |
| Atmospheric pressure | 0.001 bar |
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| Moon | Yongdya-paweng | Huge slightly egg-shaped rocky moon |
| Erfya | Very small irregular oceanic moon |
| Yaos | Very small round oceanic moon |
| Nwohyue-pwengg | Very small irregular oceanic moon |
| Rencenq Yuehwo | Huge almost round rocky planetoid |
| Yaozao-fya | Medium-sized almost round ice comet |
| Dwuk Ye | Huge slightly egg-shaped rocky planetoid |
| Yafwanzh-wan | Small slightly egg-shaped rocky moon |
| Waish Antyu'w | Large slightly egg-shaped rocky moon |
| Swuxweng | Huge potato shaped rocky moon |
| Lwei Chei | Large round ice comet |
| Reic-weix-wai | Small irregular ice moon |
| Cyanh-yanheng | Huge irregular rocky moon |
| Yulwo | Large round crater-filled moon |
| Ganer-wyoush | Large round rocky moon |
| Zengjwan | Small slightly egg-shaped ice planetoid |
| Byun Chwan | Medium-sized potato shaped oceanic moon |
| Kyeg-yanq | Very small round ice moon |
| Bangmo Shaid | Large slightly egg-shaped rocky comet |
| Faozyunx | Small round crater-filled moon |
| Yingkyao-lya | Medium-sized potato shaped rocky planetoid |
| Yaojwai Nyangt | Very small round crater-filled comet |
| Shan Shyo'byun | Medium-sized round gaseous asteroid |
| Zhyougying | Small round crater-filled moon |
| Zhyong | Small slightly egg-shaped rocky moon |
| Ouxyi | Medium-sized slightly egg-shaped rocky moon |
| Denx-a | Very small almost round gaseous moon |
| Nerwail | Medium-sized irregular gaseous asteroid |
| Ranywux | Large round rocky moon |
| Chwang-xwur Weng | Large almost round rocky comet |
| Dweng | Large irregular oceanic asteroid |
| Google search for Zyuan zyuan |