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Comet C/2015 O1 (PANSTARRS)

Available Resources

Comet C/2015 O1 (PANSTARRS) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2015 O1 (PANSTARRS) 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 C/2015 O1 (PANSTARRS) in Hercules on March, 22 2018
High Precision Live Sky Chart
15h 56m 29s
+47° 22’ 18”
 = 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 C/2015 O1 (PANSTARRS) Rise and Set Times

Comet C/2015 O1 (PANSTARRS) is circumpolar from Greenwich, United Kingdom [change] and transits at 03:58 UTC (altitude: 85.9°)

Comet C/2015 O1 (PANSTARRS) Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2015 O1 (PANSTARRS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2015 O1 (PANSTARRS) 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 C/2015 O1 (PANSTARRS)
View Comet C/2015 O1 (PANSTARRS) in the 3D Solar System Simulator

Comet C/2015 O1 (PANSTARRS) Ephemeris

The following table lists the ephemerides of Comet C/2015 O1 (PANSTARRS) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2015 O1 (PANSTARRS) in our Online Planetarium at the chosen date.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2018 Mar 15 14.38 16h 08m 31s +44° 40’ 08” Hercules
2018 Mar 16 14.38 16h 06m 59s +45° 03’ 34” Hercules
2018 Mar 17 14.37 16h 05m 21s +45° 26’ 57” Hercules
2018 Mar 18 14.37 16h 03m 42s +45° 50’ 16” Hercules
2018 Mar 19 14.37 16h 01m 59s +46° 13’ 27” Hercules
2018 Mar 20 14.36 16h 00m 11s +46° 36’ 33” Hercules
2018 Mar 21 14.36 15h 58m 22s +46° 59’ 30” Hercules
2018 Mar 22 14.36 15h 56m 29s +47° 22’ 18” Hercules
2018 Mar 23 14.35 15h 54m 32s +47° 44’ 56” Hercules
2018 Mar 24 14.35 15h 52m 31s +48° 07’ 23” Hercules
2018 Mar 25 14.35 15h 50m 26s +48° 29’ 35” Hercules
2018 Mar 26 14.35 15h 48m 17s +48° 51’ 35” Bootes
2018 Mar 27 14.35 15h 46m 06s +49° 13’ 20” Bootes
2018 Mar 28 14.34 15h 43m 50s +49° 34’ 50” Bootes

Distance of Comet C/2015 O1 (PANSTARRS) from Earth

The following chart shows the distance of Comet C/2015 O1 (PANSTARRS) 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 C/2015 O1 (PANSTARRS) is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet C/2015 O1 (PANSTARRS) from Earth between January 2013 and December 2075

Light Curve of Comet C/2015 O1 (PANSTARRS)

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2015 O1 (PANSTARRS), 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 C/2015 O1 (PANSTARRS) between January 2013 and December 2075

Comet C/2015 O1 (PANSTARRS) Orbital Elements

The following table lists the orbital elements of Comet C/2015 O1 (PANSTARRS) at epoch 03 May 2017 00:00 UTC (JD: 2457877.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99989828
Orbit inclination i 127.20906008°
Perihelion distance q 3.72984025 AU
557,976,161 km
Aphelion distance Q 73,329.78802911 AU
10,969,980,170,036 km
Semi-major axis a 36,666.75893468 AU
5,485,269,073,099 km
Orbital period period 7,021,291.2300 years
2,564,526,622.2193 days
Date of perihelion transit Tp 2018-Feb-18 23:18:27
2,458,168.4712 JD
Next perihelion transit 2018-Feb-18 23:18
2,566,984,790.6904 JD
Argument of perihelion peri 89.575904180323°
Longitude of the ascending node node 299.84819792742°
Mean anomaly M 359.9999591544°
Mean motion n 0.00000014°/day
Closest approach to Earth* 2018-Apr-05
Distance of closest approach* 3.23328314 AU
483,692,275 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.