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🌎  Greenwich, United Kingdom [change]

Comet 19P/Borrelly

Comet 19P/Borrelly is currently in the constellation of Grus. The current Right Ascension of Comet 19P/Borrelly is 23h 04m 42s and the Declination is -53° 51’ 33” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 19P/Borrelly is 13.44 (JPL) while the latest observed magnitude is 12.1 (COBS).

Summary of key facts about Comet 19P/Borrelly [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

23h 04m 42s
-53° 51’ 33”

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Comet 19P/Borrelly available on TheSkyLive:

Available Resources

Comet 19P/Borrelly Position and Finder Charts

Below we provide Comet 19P/Borrelly finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet 19P/Borrelly in Grus on October, 26 2021
Field of view: 50x30 degrees
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Map showing Comet 19P/Borrelly in Grus on October, 26 2021
Field of view: 10x6 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, 60 arcmin wide, showing where Comet 19P/Borrelly is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 23h 04m 42s
Dec: -53° 51’ 33”
Deep sky finder chart for Comet 19P/Borrelly
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 19P/Borrelly?, a page that provides all the information needed to find Comet 19P/Borrelly in the sky and additional links to sky charts.

Comet 19P/Borrelly Distance from Earth

The distance of Comet 19P/Borrelly from Earth is currently 179,285,795 kilometers, equivalent to 1.198452 Astronomical Units. Light takes 9 minutes and 58.0330 seconds to travel from Comet 19P/Borrelly and arrive to us.

9 minutes and 58.0330 seconds

The following chart shows the distance of Comet 19P/Borrelly 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 19P/Borrelly 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 19P/Borrelly from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 19P/Borrelly to Earth

Between January 2013 and December 2100, the closest approach of Comet 19P/Borrelly to Earth happens on Wed Dec 6 2028 at a distance of 0.413074 Astronomical Units, or 61,794,964 kilometers:

Wed Dec 6 2028

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

Comet 19P/Borrelly brightness

The current visual magnitude of Comet 19P/Borrelly is 13.44.


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 19P/Borrelly, 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 19P/Borrelly between January 2013 and December 2100

Comet 19P/Borrelly rise and set times

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

Comet 19P/Borrelly is currently not visible from Greenwich, United Kingdom [change]

The rise and set times are defined as the time at which the upper limb of Comet 19P/Borrelly 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 19P/Borrelly 15 Days Ephemeris

The following table lists the ephemerides of Comet 19P/Borrelly computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 19P/Borrelly in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Oct 19 23h 08m 17s -55° 58’ 31” 13.69 Grus
2021 Oct 20 23h 07m 37s -55° 43’ 23” 13.66 Grus
2021 Oct 21 23h 07m 00s -55° 27’ 43” 13.63 Grus
2021 Oct 22 23h 06m 28s -55° 11’ 30” 13.59 Grus
2021 Oct 23 23h 05m 57s -54° 54’ 45” 13.56 Grus
2021 Oct 24 23h 05m 31s -54° 37’ 27” 13.53 Grus
2021 Oct 25 23h 05m 08s -54° 19’ 36” 13.50 Grus
2021 Oct 26 23h 04m 50s -54° 01’ 15” 13.46 Grus
2021 Oct 27 23h 04m 33s -53° 42’ 24” 13.43 Grus
2021 Oct 28 23h 04m 21s -53° 23’ 02” 13.40 Grus
2021 Oct 29 23h 04m 12s -53° 03’ 10” 13.37 Grus
2021 Oct 30 23h 04m 05s -52° 42’ 47” 13.34 Grus
2021 Oct 31 23h 04m 04s -52° 21’ 56” 13.30 Grus
2021 Nov 01 23h 04m 05s -52° 00’ 37” 13.27 Grus