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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 Ophiucus on January, 24 2018
High Precision Live Sky Chart
18h 00m 05s
+10° 49’ 27”
 = 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: 79.2°
Max altitude: 49.3°
Azimuth: 280.8°

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 Jan 17 29.22 17h 58m 32s +10° 40’ 49” Ophiucus
2018 Jan 18 29.22 17h 58m 45s +10° 41’ 57” Ophiucus
2018 Jan 19 29.21 17h 58m 59s +10° 43’ 08” Ophiucus
2018 Jan 20 29.21 17h 59m 12s +10° 44’ 20” Ophiucus
2018 Jan 21 29.21 17h 59m 26s +10° 45’ 33” Ophiucus
2018 Jan 22 29.21 17h 59m 39s +10° 46’ 49” Ophiucus
2018 Jan 23 29.20 17h 59m 52s +10° 48’ 06” Ophiucus
2018 Jan 24 29.20 18h 00m 05s +10° 49’ 27” Ophiucus
2018 Jan 25 29.20 18h 00m 17s +10° 50’ 48” Ophiucus
2018 Jan 26 29.19 18h 00m 29s +10° 52’ 10” Ophiucus
2018 Jan 27 29.19 18h 00m 42s +10° 53’ 35” Ophiucus
2018 Jan 28 29.19 18h 00m 55s +10° 55’ 03” Ophiucus
2018 Jan 29 29.18 18h 01m 06s +10° 56’ 31” Ophiucus
2018 Jan 30 29.18 18h 01m 18s +10° 58’ 01” Ophiucus

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.