Boulder Sky & Satellites — Azimuthal Projection

Observer: Boulder, CO (40.015°N, −105.270°E, 1.62 km)

Time

Local
0 min

Layers

Projection

Satellites

Self‑contained demo with embedded Kepler elements parsed from TLEs. Accuracy is reasonable over hours; for precision, paste fresh TLEs below. Labels appear near points; only above‑horizon satellites are shown by default.

Show / edit embedded TLEs
Paste 3‑line blocks: name + line1 + line2

Notes

  • North at top; azimuth increases clockwise (N→E→S→W). Radius encodes zenith distance (center = zenith, rim = horizon).
  • Time slider shifts minutes from the chosen local time.
  • Embedded orbits use a simple two‑body propagation (no SGP4 perturbations). For teaching & intuition.
Stars
Satellites
ISS
Trails
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UTC:
LST:

Pointing

Azimuth
°
Altitude
°
Range
km
Object