In Evidence
Ephemeris Calculator
Compute Comet C/2021 D1 (SWAN) ephemerides for any date and time between 01 Jan 2013 and 31 Dec 2100 and display the predicted position in an interactive sky map.
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How Far is Comet C/2021 D1 (SWAN) from Earth?
The distance of Comet C/2021 D1 (SWAN) from Earth is currently 1,093,374,982 kilometers, equivalent to 7.308760 Astronomical Units. Light takes 1 hours, 47.1064 seconds to travel from Comet C/2021 D1 (SWAN) and arrive to us.
The following chart shows the distance of Comet C/2021 D1 (SWAN) 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.
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 C/2021 D1 (SWAN) from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest approach of Comet C/2021 D1 (SWAN) to Earth
Between January 2013 and December 2100 the closest approach of Comet C/2021 D1 (SWAN) to Earth happens on Mon Mar 15 2021 at a distance of 1.67630307 Astronomical Units, or 250,771,371 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.