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Elliptical Orbit Vis Viva Speed

Online elliptical orbit vis viva speed. Idealized astronomical model with displayed units. Seeing, extinction, instrument losses or cosmological effects apply only when explicitly included.

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elliptical orbit vis viva speed calculator online

Use elliptical orbit vis viva speed online for central mass solar, semimajor AU, current radius AU. Idealized astronomical model with displayed units. Seeing, extinction, instrument losses or cosmological effects apply only when explicitly included.

How to use it

Enter central mass solar. Set semimajor AU, current radius AU. Select Calculate and check the labeled output. Copy or download the JSON result.

Options and example settings

OptionChoices / valueExample default
central mass solarMain input. Positive values. 1
semimajor AUOption. Positive values. 1
current radius AUOption. Positive values. 1

Calculation method

speed_km_s = sqrt(6.67430e-11*central_mass_solar*1.98847e30*positive(2/current_radius_AU-1/semimajor_AU)/149597870700)/1000 (^ means exponentiation; trig functions ending in d use degrees).

Worked examples

Apply elliptical orbit vis viva speed to the case below, keeping the displayed units and assumptions. Idealized astronomical model with displayed units. Seeing, extinction, instrument losses or cosmological effects apply only when explicitly included.

Elliptical Orbit Vis Viva Speed — worked case

Settings: semimajor AU: 1; current radius AU: 1

Input:

1

Calculated result for these inputs:

Output:

{
  "speed_km_s": 29.785142169221025
}

Choose the right tool

Use telescope calculators for focal lengths and angular scale, magnitude tools for logarithmic brightness relationships, and orbit tools for the specified gravitational model. Check whether a distance is in parsecs, light-years or astronomical units.

Limitations and common mistakes

  • Idealized astronomical model with displayed units. Seeing, extinction, instrument losses or cosmological effects apply only when explicitly included.
  • Use the displayed unit in every field. Ratios and percentages are different inputs; percent fields use values such as 25 rather than 0.25.

Frequently asked questions

How can I use elliptical orbit vis viva speed calculator online?

Enter central mass solar. Set semimajor AU, current radius AU. Select Calculate and check the labeled output. Copy or download the JSON result.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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