Kostenloser Parallax Distance Rechner
Berechnen Sie stellar distance aus parallax angle. Kostenloser Online parallax distance Rechner.
arcsec
Distance (parsecs)
1.2953 pc
Distance (light-years)4.2248 ly
Distance (parsecs) vs Parallax Angle
Formel
## Stellar Parallax As Earth orbits the Sun, nearby stars shift against the background. The parallax angle p relates to distance: **d (parsecs) = 1 / p (arcseconds)** A star with 1 arcsecond parallax is exactly 1 parsec away.
Lösungsbeispiel
Alpha Centauri has a parallax of 0.772 arcseconds.
- 01d = 1 / 0.772 = 1.295 pc
- 02In ly: 1.295 × 3.262 = 4.225 ly
Häufig Gestellte Fragen
How small are parallax angles?
Even the nearest star has only 0.769 arcsec. The Gaia mission reaches micro-arcsecond precision.
Why does parallax fail for distant stars?
The angle becomes too small to measure accurately. Beyond about 1000 pc, other methods are needed.
What baseline is used?
The diameter of Earth's orbit (2 AU). The parallax angle is half the total annual shift.