Vis Viva Orbital Speed
Calculator
Instantaneous orbital speed (m/s)
29,788.512236
Results
- Instantaneous orbital speed (m/s)
- 29,788.512236
- Instantaneous orbital speed (km/s)
- 29.788512
Astronomy results
| Instantaneous orbital speed (m/s) | 29,788.512236 |
| Instantaneous orbital speed (km/s) | 29.788512 |
formula-map diagram
- Instantaneous orbital speed (m/s)
- 29,788.512236
- Instantaneous orbital speed (km/s)
- 29.788512
Astronomical relationship
Formula
v = √(G M (2/r − 1/a))= 29788.512236598
Note
This result is a simplified model: it applies the displayed textbook formula to the values you entered, assuming ideal spherical bodies, circular orbits, blackbody radiation and perfect optics, and ignoring atmospheric seeing, relativistic corrections beyond those stated, cosmological models and measurement uncertainty. Use published ephemerides and catalogue data for real observations.