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Comet 51P/Harrington

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Comet 51P/Harrington Position

Comet 51P/Harrington is currently in the constellation of Virgo. The current Right Ascension is 12h 53m 43s and the Declination is +01° 03’ 51”.

12h 53m 43s
+01° 03’ 51”

Simplified sky chart showing where Comet 51P/Harrington is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)

Map showing Comet 51P/Harrington in Virgo on April, 08 2020
Field of view: 60x30 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart showing where Comet 51P/Harrington is right now (view fullscreen)

RA: 12h 53m 43s
Dec: +01° 03’ 51”
Deep sky finder chart for Comet 51P/Harrington
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 51P/Harrington?, a page that provides all the information needed to find Comet 51P/Harrington in the sky and additional links to sky charts.

Comet 51P/Harrington Distance

The distance of Comet 51P/Harrington from Earth is currently 648,935,253 kilometers, equivalent to 4.337864 Astronomical Units. Light takes 36 minutes and 4.6150 seconds to travel from Comet 51P/Harrington and arrive to us.

36 minutes and 4.6150 seconds

The following chart shows the distance of Comet 51P/Harrington 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 51P/Harrington 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 51P/Harrington from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 51P/Harrington to Earth

Between January 2013 and December 2100 the closest approach of Comet 51P/Harrington to Earth happens on Mon Sep 5 2022 at a distance of 0.71996295 Astronomical Units, or 107,704,924 kilometers:

Mon Sep 5 2022

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

Comet 51P/Harrington brightness

The current visual magnitude of Comet 51P/Harrington is 26.32.


The observed magnitude and coma diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemerides service and might be inaccurate given the highly dynamic and unpredictable behavior of comets. When available, please refer to the Observed Magnitude value and consider the Estimated Magnitude as a directional indication. We acknowledge with thanks the comet observations from the COBS Comet Observation Database contributed by observers worldwide and used in this table to report recent comet observations.

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 51P/Harrington, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.

Predicted magnitude of Comet 51P/Harrington between January 2013 and December 2100

Comet 51P/Harrington rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Comet 51P/Harrington rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 88.9°
Max altitude: 39.6°
Azimuth: 271.0°
Comet 51P/Harrington is above the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Comet 51P/Harrington touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet 51P/Harrington 15 Days Ephemeris

The following table lists the ephemerides of Comet 51P/Harrington computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 51P/Harrington in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Apr 01 12h 58m 21s +00° 35’ 47” 26.35 Virgo
2020 Apr 02 12h 57m 46s +00° 39’ 24” 26.34 Virgo
2020 Apr 03 12h 57m 11s +00° 43’ 00” 26.34 Virgo
2020 Apr 04 12h 56m 35s +00° 46’ 36” 26.34 Virgo
2020 Apr 05 12h 56m 00s +00° 50’ 11” 26.33 Virgo
2020 Apr 06 12h 55m 26s +00° 53’ 43” 26.33 Virgo
2020 Apr 07 12h 54m 50s +00° 57’ 14” 26.32 Virgo
2020 Apr 08 12h 54m 15s +01° 00’ 42” 26.32 Virgo
2020 Apr 09 12h 53m 39s +01° 04’ 09” 26.32 Virgo
2020 Apr 10 12h 53m 04s +01° 07’ 35” 26.31 Virgo
2020 Apr 11 12h 52m 29s +01° 10’ 57” 26.31 Virgo
2020 Apr 12 12h 51m 55s +01° 14’ 17” 26.31 Virgo
2020 Apr 13 12h 51m 20s +01° 17’ 35” 26.30 Virgo
2020 Apr 14 12h 50m 45s +01° 20’ 50” 26.30 Virgo