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Comet C/2015 O1 (PANSTARRS)

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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 December, 14 2017
High Precision Live Sky Chart
16h 26m 05s
+20° 48’ 06”
 = 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

Today's Comet C/2015 O1 (PANSTARRS) rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 69.2°
Max altitude: 59.3°
Azimuth: 290.8°

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
2017 Dec 07 15.29 16h 23m 26s +20° 10’ 20” Hercules
2017 Dec 08 15.28 16h 23m 48s +20° 15’ 14” Hercules
2017 Dec 09 15.28 16h 24m 11s +20° 20’ 17” Hercules
2017 Dec 10 15.27 16h 24m 34s +20° 25’ 30” Hercules
2017 Dec 11 15.27 16h 24m 57s +20° 30’ 52” Hercules
2017 Dec 12 15.26 16h 25m 20s +20° 36’ 27” Hercules
2017 Dec 13 15.26 16h 25m 44s +20° 42’ 11” Hercules
2017 Dec 14 15.25 16h 26m 05s +20° 48’ 06” Hercules
2017 Dec 15 15.25 16h 26m 29s +20° 54’ 12” Hercules
2017 Dec 16 15.24 16h 26m 51s +21° 00’ 30” Hercules
2017 Dec 17 15.24 16h 27m 14s +21° 06’ 59” Hercules
2017 Dec 18 15.23 16h 27m 36s +21° 13’ 37” Hercules
2017 Dec 19 15.23 16h 27m 57s +21° 20’ 29” Hercules
2017 Dec 20 15.22 16h 28m 19s +21° 27’ 30” Hercules

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 08 April 2017 00:00 UTC (JD: 2457852.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99991114
Orbit inclination i 127.20942618°
Perihelion distance q 3.72989431 AU
557,984,247 km
Aphelion distance Q 83,942.68035182 AU
12,557,646,266,665 km
Semi-major axis a 41,973.20512306 AU
6,279,102,125,456 km
Orbital period period 8,599,365.3900 years
3,140,918,209.9211 days
Date of perihelion transit Tp 2018-Feb-18 23:06:47
2,458,168.4631 JD
Argument of perihelion peri 89.574323221855°
Longitude of the ascending node node 299.84856798529°
Mean anomaly M 359.99996378553°
Mean motion n 0.00000011°/day
Closest approach to Earth* 2018-Apr-05
Distance of closest approach* 3.23328723 AU
483,692,886 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.