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Comet 12P/Pons-Brooks

Available Resources

Comet 12P/Pons-Brooks Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet 12P/Pons-Brooks is now with respect to the brightest stars and constellations.

More advanced sky charts are available on TheSkyLive for this object: 1) the Online Planetarium which is interactive and allows to select dates and additional objects to visualize; and 2) the Live Position and Data Tracker which provides the highest precision position data and features deep sky imagery from the Digitized Sky Survey.

Comet 12P/Pons-Brooks in Hercules on July, 20 2018
High Precision Live Sky Chart
17h 45m 28s
+15° 23’ 16”
28.59
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Comet 12P/Pons-Brooks Rise and Set Times

Today's Comet 12P/Pons-Brooks rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 74.6°
Max altitude: 53.9°
Azimuth: 285.4°

Comet 12P/Pons-Brooks Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 12P/Pons-Brooks with respect of the Sun and the orbits of the major planets. The position of Comet 12P/Pons-Brooks 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 12P/Pons-Brooks
View Comet 12P/Pons-Brooks in the 3D Solar System Simulator

Comet 12P/Pons-Brooks Ephemeris

The following table lists the ephemerides of Comet 12P/Pons-Brooks computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 12P/Pons-Brooks in our Online Planetarium at the chosen date.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2018 Jul 13 28.60 17h 47m 08s +15° 28’ 19” Hercules
2018 Jul 14 28.60 17h 46m 54s +15° 27’ 42” Hercules
2018 Jul 15 28.60 17h 46m 40s +15° 27’ 05” Hercules
2018 Jul 16 28.59 17h 46m 24s +15° 26’ 23” Hercules
2018 Jul 17 28.59 17h 46m 10s +15° 25’ 40” Hercules
2018 Jul 18 28.59 17h 45m 56s +15° 24’ 53” Hercules
2018 Jul 19 28.59 17h 45m 42s +15° 24’ 06” Hercules
2018 Jul 20 28.59 17h 45m 28s +15° 23’ 16” Hercules
2018 Jul 21 28.59 17h 45m 15s +15° 22’ 23” Hercules
2018 Jul 22 28.58 17h 45m 01s +15° 21’ 28” Hercules
2018 Jul 23 28.58 17h 44m 47s +15° 20’ 30” Hercules
2018 Jul 24 28.58 17h 44m 34s +15° 19’ 32” Hercules
2018 Jul 25 28.58 17h 44m 21s +15° 18’ 29” Hercules
2018 Jul 26 28.58 17h 44m 08s +15° 17’ 26” Hercules

Distance of Comet 12P/Pons-Brooks from Earth

The following chart shows the distance of Comet 12P/Pons-Brooks from Earth as a function of time. Distance data is measured in Astronomical Units and sampled with a 2 days interval.

The reported distances might be inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 12P/Pons-Brooks is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet 12P/Pons-Brooks from Earth between January 2013 and December 2075

Light Curve of Comet 12P/Pons-Brooks

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 12P/Pons-Brooks, 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 12P/Pons-Brooks between January 2013 and December 2075

Comet 12P/Pons-Brooks Orbital Elements

The following table lists the orbital elements of Comet 12P/Pons-Brooks at epoch 01 January 1970 00:00 UTC (JD: 2435000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.95481239
Orbit inclination i 74.17689423°
Perihelion distance q 0.77366709 AU
115,738,949 km
Aphelion distance Q 33.46877940 AU
5,006,858,143 km
Semi-major axis a 17.12122324 AU
2,561,298,546 km
Orbital period period 70.8500 years
25,876.2067 days
Date of perihelion transit Tp 1954-May-22 21:08:25
2,434,885.3809 JD
Next perihelion transit 2025-Mar-27 02:06
2,460,761.5876 JD
Argument of perihelion peri 199.0284685654°
Longitude of the ascending node node 255.8911443583°
Mean anomaly M 1.601583044411°
Mean motion n 0.01391239°/day
Closest approach to Earth* 2024-Jun-02
Distance of closest approach* 1.54560177 AU
231,218,735 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2075-Dec-31, with a sampling interval of 1 day.