Mars–Venus: Angular Separation & Planet–Planet Distance

Local calculations via astronomy-engine. Toggle topocentric angle. Presets + elevation + current location. Time charts honor the timezone toggle; the Angle–Distance chart has its own legend.

Date & time (local)

Use topocentric angle (location-dependent)

Use observer timezone for time charts (otherwise UTC)

Show time arrows on Angle–Distance plot

Color Angle–Distance path by time (early→late)

Angle uses geocentric (checkbox off) or topocentric (checkbox on). Distance is heliocentric; Alt/Az readouts are topocentric.

Angular separation

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Planet–planet distance

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Mars (geocentric apparent)

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Venus (geocentric apparent)

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Location preset

Observer latitude (deg)

Observer longitude (deg)

Elevation (m)

Time zone (IANA)

Presets use fixed elevations/timezones here. “Use current location” asks your browser for GPS; timezone uses your device setting.

Scan window (days, ± around selected time)

Step size (hours)

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Angular separation (deg) vs time

Distance (AU) vs time

Angle (deg) vs Distance (AU)

CDN: astronomy-engine@2. No external timezone API needed.