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Comet 51P/Harrington

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Comet 51P/Harrington Position

Comet 51P/Harrington is currently in the constellation of Leo. The current Right Ascension is 11h 23m 07s and the Declination is +09° 48’ 09”.

11h 23m 07s
+09° 48’ 09”

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

Map showing Comet 51P/Harrington in Leo on June, 17 2019
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]

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

RA: 11h 23m 07s
Dec: +09° 48’ 09”
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 860,065,464 kilometers, equivalent to 5.749183 Astronomical Units. Light takes 47 minutes and 48.8696 seconds to travel from Comet 51P/Harrington and arrive to us.

47 minutes and 48.8696 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 0.71996292 Astronomical Units, or 107,704,919 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 27.51.


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 behvior 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: 80.2°
Max altitude: 48.3°
Azimuth: 279.8°
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, consideting the effect of the atmospheric refraction. As the atmoshpere 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
2019 Jun 10 11h 21m 37s +10° 05’ 20” 27.47 Leo
2019 Jun 11 11h 21m 47s +10° 03’ 12” 27.48 Leo
2019 Jun 12 11h 21m 57s +10° 01’ 03” 27.48 Leo
2019 Jun 13 11h 22m 09s +09° 58’ 49” 27.49 Leo
2019 Jun 14 11h 22m 21s +09° 56’ 31” 27.49 Leo
2019 Jun 15 11h 22m 33s +09° 54’ 11” 27.50 Leo
2019 Jun 16 11h 22m 46s +09° 51’ 48” 27.50 Leo
2019 Jun 17 11h 22m 59s +09° 49’ 23” 27.51 Leo
2019 Jun 18 11h 23m 14s +09° 46’ 54” 27.51 Leo
2019 Jun 19 11h 23m 29s +09° 44’ 21” 27.52 Leo
2019 Jun 20 11h 23m 44s +09° 41’ 44” 27.52 Leo
2019 Jun 21 11h 24m 01s +09° 39’ 06” 27.53 Leo
2019 Jun 22 11h 24m 16s +09° 36’ 24” 27.53 Leo
2019 Jun 23 11h 24m 33s +09° 33’ 41” 27.54 Leo