In Evidence
Ephemeris Calculator
Compute Comet 117P/Helin-Roman-Alu 1 ephemerides for any date and time between 01 Jan 2013 and 31 Dec 2100 and display the predicted position in an interactive sky map.
How to support us
How Far is Comet 117P/Helin-Roman-Alu 1 from Earth?
The distance of Comet 117P/Helin-Roman-Alu 1 from Earth is currently 626,215,167 kilometers, equivalent to 4.185990 Astronomical Units. Light takes 34 minutes and 48.8290 seconds to travel from Comet 117P/Helin-Roman-Alu 1 and arrive to us.
The following chart shows the distance of Comet 117P/Helin-Roman-Alu 1 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 117P/Helin-Roman-Alu 1 from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest approach of Comet 117P/Helin-Roman-Alu 1 to Earth
Between January 2013 and December 2100 the closest approach of Comet 117P/Helin-Roman-Alu 1 to Earth happens on Sun Jul 3 2022 at a distance of 2.03085121 Astronomical Units, or 303,811,017 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.