Astronomy · Selfoss
A live observatory for the Sun, Moon, daylight, twilight and the sky above Selfoss.
The Sun is above the horizon
Selfoss · 13:07 solar noon · 8h 60m of daylight
Solar System · Selfoss
Topocentric positions for the selected observation time. Coordinates update with the Time Machine.
| BODY | ALT | AZ | RA | DEC | DISTANCE | MAG | RISE / SET |
|---|---|---|---|---|---|---|---|
| MercuryBELOW HORIZON | -0.6° | 220° | 15.18h | -20.9° | 0.796 AU | 0.4 | 11:39 / 17:08 |
| VenusBELOW HORIZON | -5.0° | 240° | 13.76h | -18.0° | 0.273 AU | -4.3 | 09:33 / 16:22 |
| MarsBELOW HORIZON | -0.1° | 316° | 9.15h | 17.9° | 1.499 AU | 1.0 | 23:31 / 17:16 |
| JupiterBELOW HORIZON | -0.6° | 308° | 9.72h | 14.4° | 5.623 AU | -2.0 | 00:44 / 17:11 |
| SaturnBELOW HORIZON | -2.1° | 81° | 0.67h | 1.4° | 8.490 AU | 0.3 | 17:39 / 06:10 |
| UranusBELOW HORIZON | -1.7° | 26° | 4.20h | 21.0° | 18.611 AU | 5.6 | 17:51 / 13:03 |
| NeptuneBELOW HORIZON | -0.5° | 89° | 0.18h | -0.4° | 28.995 AU | 7.8 | 17:24 / 05:25 |
Planetary Orbits · 2026-10-23 12:00
Heliocentric orbital geometry for the selected instant. Distances use a logarithmic visual scale so the inner planets remain readable.
- ORBIT
- 1.000 AU
- ECCENTRICITY
- 0.0167
- INCLINATION
- -0.00°
- TRUE ANOMALY
- 286.7°
- FROM EARTH
- 0.995 AU
- ALT / AZ
- 34.0° / 147°
Three-Body Relationship · 2026-10-23 12:00
Geocentric directions and lunar phase at the selected instant. The geometry is intentionally schematic, not to scale.
Constellation Map · Equatorial Coordinates
Real right ascension and declination for selected reference stars. This map is a chart, so the denser astronomical treatment stays here rather than in Living Sky.
Coordinates are plotted in an equatorial frame, independent of local horizon orientation.
- Betelgeuse
- 5.92h · 7.4° · mag 0.5
- Bellatrix
- 5.42h · 6.3° · mag 1.6
- Alnilam
- 5.60h · -1.2° · mag 1.7
- Alnitak
- 5.68h · -1.9° · mag 1.7
- Mintaka
- 5.53h · -0.3° · mag 2.2
- Rigel
- 5.24h · -8.2° · mag 0.1
Celestial Objects · Selfoss
Bright Messier objects plotted from their equatorial coordinates and evaluated for the selected time and location.
- RA
- 0.71h
- DEC
- 41.27°
- ALTITUDE
- 67.3°
- AZIMUTH
- 180.5°
- HOUR ANGLE
- 0.2°
- ANGULAR SIZE
- 178′ × 63′