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Comet C/2015 O1 (PANSTARRS)

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Comet C/2015 O1 (PANSTARRS) Position

Comet C/2015 O1 (PANSTARRS) is currently in the constellation of Cancer. The current Right Ascension is 09h 17m 08s and the Declination is +25° 33’ 24”.

09h 17m 08s
+25° 33’ 24”

Simplified sky chart showing where Comet C/2015 O1 (PANSTARRS) is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Comet C/2015 O1 (PANSTARRS) in Cancer on September, 15 2019
Field of view: 60x30 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Hihgher precision deep sky finder chart showing where Comet C/2015 O1 (PANSTARRS) is right now (view fullscreen)

RA: 09h 17m 08s
Dec: +25° 33’ 24”
Deep sky finder chart for Comet C/2015 O1 (PANSTARRS)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2015 O1 (PANSTARRS)?, a page that provides all the information needed to find Comet C/2015 O1 (PANSTARRS) in the sky and additional links to sky charts.

Comet C/2015 O1 (PANSTARRS) Distance

The distance of Comet C/2015 O1 (PANSTARRS) from Earth is currently 1,025,364,625 kilometers, equivalent to 6.854139 Astronomical Units. Light takes 57 minutes and 0.2482 seconds to travel from Comet C/2015 O1 (PANSTARRS) and arrive to us.

57 minutes and 0.2482 seconds

The following chart shows the distance of Comet C/2015 O1 (PANSTARRS) 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.

Distance of Comet C/2015 O1 (PANSTARRS) from Earth between January 2013 and December 2100

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 C/2015 O1 (PANSTARRS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2015 O1 (PANSTARRS) to Earth

Between January 2013 and December 2100 the closest approach of Comet C/2015 O1 (PANSTARRS) to Earth happens on Thu Apr 5 2018 at a distance of 3.23320619 Astronomical Units, or 483,680,763 kilometers:

Thu Apr 5 2018

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

Comet C/2015 O1 (PANSTARRS) brightness

The current visual magnitude of Comet C/2015 O1 (PANSTARRS) is 17.78.


The observed magnitude and coma diameter values are derived from the Comet Observers Database by averaging the values reported in recent observations (more recent than 4 days), when available. The Estimated Magnitude comes from the JPL Horizons ephemerides service and might be inaccurate given the highly dynamic and unpredictable behvior of comets. When available, please refer to the Observed Magnitude value and consider the Estimated 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.

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 2100

Comet C/2015 O1 (PANSTARRS) rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

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

Azimuth: 64.4°
Max altitude: 64.1°
Azimuth: 295.5°
Comet C/2015 O1 (PANSTARRS) is above the horizon from Greenwich, United Kingdom

The rise and set times are defined as the time at which the upper limb of Comet C/2015 O1 (PANSTARRS) touches the horizon, consideting the effect of the atmospheric refraction. As the atmoshpere conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet C/2015 O1 (PANSTARRS) Orbital Elements

The following table lists the orbital elements of Comet C/2015 O1 (PANSTARRS) at epoch 23 December 2017 00:00 UTC (JD: 2458111.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00001450
Orbit inclination i 127.21088161°
Perihelion distance q 3.72964348 AU
557,946,725 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2018-Feb-19 00:17:35
2,458,168.5122 JD
Argument of perihelion peri 89.589063836144°
Longitude of the ascending node node 299.85344793718°
Mean anomaly M -4.3076789791744E-7°
Mean motion n 0.00000001°/day

Visualization of Comet C/2015 O1 (PANSTARRS) Orbit

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) 15 Days 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 Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Sep 08 09h 15m 15s +25° 58’ 23” 17.77 Cancer
2019 Sep 09 09h 15m 32s +25° 54’ 57” 17.77 Cancer
2019 Sep 10 09h 15m 47s +25° 51’ 33” 17.77 Cancer
2019 Sep 11 09h 16m 03s +25° 48’ 12” 17.77 Cancer
2019 Sep 12 09h 16m 18s +25° 44’ 53” 17.78 Cancer
2019 Sep 13 09h 16m 32s +25° 41’ 38” 17.78 Cancer
2019 Sep 14 09h 16m 46s +25° 38’ 22” 17.78 Cancer
2019 Sep 15 09h 17m 00s +25° 35’ 11” 17.78 Cancer
2019 Sep 16 09h 17m 14s +25° 32’ 02” 17.78 Cancer
2019 Sep 17 09h 17m 27s +25° 28’ 54” 17.78 Cancer
2019 Sep 18 09h 17m 40s +25° 25’ 50” 17.78 Cancer
2019 Sep 19 09h 17m 53s +25° 22’ 46” 17.79 Cancer
2019 Sep 20 09h 18m 06s +25° 19’ 46” 17.79 Cancer
2019 Sep 21 09h 18m 17s +25° 16’ 49” 17.79 Cancer