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Ephemeris Calculator

Compute Comet 123P/West-Hartley ephemerides for any date and time between 01 Jan 2013 and 31 Dec 2100 and display the predicted position in an interactive sky map.

Time: : UTC

How Far is Comet 123P/West-Hartley from Earth?

The distance of Comet 123P/West-Hartley from Earth is currently 724,910,532 kilometers, equivalent to 4.845728 Astronomical Units. Light takes 40 minutes and 18.0413 seconds to travel from Comet 123P/West-Hartley and arrive to us.

724,910,532
4.845728
40 minutes and 18.0413 seconds

The following chart shows the distance of Comet 123P/West-Hartley from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.

Distance of Comet 123P/West-Hartley from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 123P/West-Hartley from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 123P/West-Hartley to Earth

Between January 2013 and December 2100 the closest approach of Comet 123P/West-Hartley to Earth happens on Thu Feb 28 2019 at a distance of 1.19958045 Astronomical Units, or 179,454,681 kilometers:

Thu Feb 28 2019
179,454,681
1.199580

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

See Also