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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:52  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
Comets » 

Comet 19P/Borrelly

Altitude: -41.5°   Azimuth: 343.5°   Direction: North-North-West

Comet 19P/Borrelly is currently in the constellation of Libra.

The current Right Ascension of Comet 19P/Borrelly is 15h 21m 04s and the Declination is -04° 07’ 03” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom edit_location_alt). The current estimated magnitude of Comet 19P/Borrelly is 24.32 (JPL).

15h 21m 04s
-04° 07’ 03”

The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted 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.

Today's rise, transit and set times of Comet 19P/Borrelly from Greenwich, United Kingdom edit_location_alt (all times relative to the local timezone Europe/London):

Azimuth: 94.1°
Max altitude: 34.4°
Azimuth: 265.9°
  • 19P/Borrelly is below the horizon from Greenwich, United Kingdom edit_location_alt.
  • Given its current magnitude, 19P/Borrelly is visible only through long exposure photography.
  • Go to interactive sky chart

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.

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.

Finder chart of 19P/Borrelly in Libra on December,10 2023
Map showing Comet 19P/Borrelly in Libra on December, 10 2023
Field of view: 50x30 degrees
View fullscreen
Finder chart of 19P/Borrelly
Map showing Comet 19P/Borrelly in Libra on December, 10 2023
Field of view: 10x6 degrees
View fullscreen

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: 15h 21m 04s
Dec: -04° 07’ 03”
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 865,986,209 kilometers, equivalent to 5.788760 Astronomical Units. Light takes 48 minutes and 8.6191 seconds to travel from Comet 19P/Borrelly and arrive to us.

48 minutes and 8.6191 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.

Chart of the distance of Comet 19P/Borrelly from Earth in Astronomical Units (au)

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 1 January 2013 and 30 December 2100, the closest approach of Comet 19P/Borrelly to Earth happens on Wed Dec 6 2028 at a distance of 0.414136 Astronomical Units, or 61,953,874 kilometers:

Wed Dec 6 2028

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

Comet 19P/Borrelly Brightness and Light Curve

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.

Chart of the magnitude of Comet 19P/Borrelly as a function of time

Comet 19P/Borrelly Orbital Elements

The following table lists the orbital elements of Comet 19P/Borrelly at epoch 09 February 2021 00:00 UTC (JD: 2459255.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.63794908
Orbit inclination i 29.32349908°
Perihelion distance q 1.30589761 AU
195,359,503 km
Aphelion distance Q 5.90799157 AU
883,822,961 km
Semi-major axis a 3.60694459 AU
539,591,232 km
Orbital period period 6.8504 years
2,502.1171 days
Date of perihelion transit Tp 2022-Feb-01 18:03:22
2,459,612.2523 JD
Next perihelion transit 2028-Dec-08 20:52
2,462,114.3695 JD
Argument of perihelion peri 351.85637184474°
Longitude of the ascending node node 74.310740143697°
Mean anomaly M 308.67113065509°
Mean motion n 0.14387816°/day

Visualization of Comet 19P/Borrelly Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 19P/Borrelly with respect of the Sun and the orbits of the major planets. The position of Comet 19P/Borrelly and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Comet 19P/Borrelly
View Comet 19P/Borrelly in the 3D Solar System Simulator

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
2023 Dec 03 15h 15m 07s -03° 41’ 26” 24.30 Serpens
2023 Dec 04 15h 15m 54s -03° 44’ 52” 24.30 Libra
2023 Dec 05 15h 16m 40s -03° 48’ 15” 24.30 Libra
2023 Dec 06 15h 17m 25s -03° 51’ 34” 24.31 Libra
2023 Dec 07 15h 18m 11s -03° 54’ 51” 24.31 Libra
2023 Dec 08 15h 18m 56s -03° 58’ 04” 24.31 Libra
2023 Dec 09 15h 19m 41s -04° 01’ 14” 24.32 Libra
2023 Dec 10 15h 20m 26s -04° 04’ 19” 24.32 Libra
2023 Dec 11 15h 21m 10s -04° 07’ 23” 24.32 Libra
2023 Dec 12 15h 21m 55s -04° 10’ 22” 24.33 Libra
2023 Dec 13 15h 22m 38s -04° 13’ 18” 24.33 Libra
2023 Dec 14 15h 23m 22s -04° 16’ 09” 24.33 Libra
2023 Dec 15 15h 24m 06s -04° 18’ 59” 24.33 Libra
2023 Dec 16 15h 24m 50s -04° 21’ 43” 24.34 Libra