Sun elevation
—Awaiting source data
01 / Landing-site navigator
Lunar landing explorer
No ephemerides loadedSpherical lunar model / JPL-derived geometry
The Moon, in perspective.
Loading NASA lunar surface…
Neutral surface imagery; no scientific layer displayed
00:00 UTC
Selected landing site
0.67416°N · 23.47314°E
Evaluate a site to retrieve its source measurements.
- Sun elevation
- —
- Relative sunlight incidence
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- Earth elevation
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- Direct-to-Earth visibility
- —
- Sun azimuth
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- Earth azimuth
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- Earth range
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- Radio signal strength
- Needs mission specifications
JPL Horizons + spherical calculations. Sunlight incidence = max(0, sin Sun elevation), relative to an overhead Sun on a horizontal surface; not W/m² or lux. Terrain, eclipses, temperature, slope and landing safety are not evaluated.
Radio link model · mission specifications
Enter all six mission values; no assumed equipment specifications.
Ideal Friis model using source range. Antenna gains must apply in the link direction. Additional losses and receiver threshold are user-supplied. No relay, terrain obstruction or atmospheric model; not measured signal strength or a guaranteed link.
Source: NASA SVS / LROC WAC mosaic (2019 surface texture, resized). Layers: calculations from JPL apparent angles and ranges on a 1,737.4 km sphere; not terrain-resolved or eclipse-screened. Earth visibility is not signal strength. Surface texture shadows are not current illumination.
Horizon measurements & comparison
Earth elevation
—Awaiting source data
Sun azimuth
—Clockwise from north
Earth azimuth
—Clockwise from north
Sun & Earth above the horizon
● Sun● Earth
No Sun or Earth measurements loaded for this selection.
02 / Compare scenarios
Same mission. Different possibilities.
No evaluated scenarios added to comparison.