A place to stand
Sky from Charon
Same space. A very different sky.
9 September 2026 · 12:00 UTC · static reference
- Equatorial diameter
- 7.17°
- Altitude
- 90.00°
- Azimuth
- At zenith
- Lit fraction · sphere
- 48.3%
Sun: altitude 2.01° · azimuth 330.10° · width 0.015°
Geometric horizon. No terrain, atmosphere, stars or eclipses. Shapes and illumination follow the model; colors are illustrative.
One angular scale
Parent-facing sites · 9 September 2026, 12:00 UTC. Each bar shows equatorial diameter as a fraction of the selected field of view.
Geometry, sources and static site comparison
Geometry covers 2026 UTC. Directions are geometric, without light-time or aberration correction. Rotation follows NAIF PCK00011; coordinates are planetocentric and east-positive. Parent disk shape uses the PCK ellipsoid. The frame is ICRF; the orbit locator alone projects to the J2000 ecliptic.
| Site | Parent altitude | Center above horizon |
|---|---|---|
| Parent-facing | 90.00° | Yes |
| Limb | -1.77° | No |
| Far side | -90.00° | No |
The parent-facing point is calculated at the chosen instant, not assumed to be 0° longitude. The limb and far-side presets are relative to that point. Visibility describes the current instant.
Moon measurements and rotation coefficients · JPL Horizons model · PCK00011 · Versioned geometry manifest, validation and source requests · Static image provenance and checksums · Moon model limits
Numerical interpolation agrees with the pinned source at tested epochs within 0.1 arcsecond in local direction. This is not an observational accuracy claim. No future leap seconds are predicted. Static images and interactive views use the same geometric renderer.