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Comet C/2017 S2 (PANSTARRS)

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Comet C/2017 S2 (PANSTARRS) Position

Comet C/2017 S2 (PANSTARRS) is currently in the constellation of Gemini. The current Right Ascension is 06h 49m 34s and the Declination is +32° 14’ 16”.

06h 49m 34s
+32° 14’ 16”

Simplified sky chart showing where Comet C/2017 S2 (PANSTARRS) is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)

Map showing Comet C/2017 S2 (PANSTARRS) in Gemini on March, 29 2020
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]

Higher precision deep sky finder chart showing where Comet C/2017 S2 (PANSTARRS) is right now (view fullscreen)

RA: 06h 49m 34s
Dec: +32° 14’ 16”
Deep sky finder chart for Comet C/2017 S2 (PANSTARRS)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2017 S2 (PANSTARRS)?, a page that provides all the information needed to find Comet C/2017 S2 (PANSTARRS) in the sky and additional links to sky charts.

Comet C/2017 S2 (PANSTARRS) Distance

The distance of Comet C/2017 S2 (PANSTARRS) from Earth is currently 1,145,302,735 kilometers, equivalent to 7.655876 Astronomical Units. Light takes 1 hours, 3 minutes and 40.3187 seconds to travel from Comet C/2017 S2 (PANSTARRS) and arrive to us.

1 hours, 3 minutes and 40.3187 seconds

The following chart shows the distance of Comet C/2017 S2 (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/2017 S2 (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/2017 S2 (PANSTARRS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2017 S2 (PANSTARRS) to Earth

Between January 2013 and December 2100 the closest approach of Comet C/2017 S2 (PANSTARRS) to Earth happens on Sat Oct 7 2017 at a distance of 2.64823741 Astronomical Units, or 396,170,679 kilometers:

Sat Oct 7 2017

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

Comet C/2017 S2 (PANSTARRS) brightness

The current visual magnitude of Comet C/2017 S2 (PANSTARRS) is 30.48.


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 behavior 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/2017 S2 (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/2017 S2 (PANSTARRS) between January 2013 and December 2100

Comet C/2017 S2 (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/2017 S2 (PANSTARRS) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 57.8°
Max altitude: 70.8°
Azimuth: 302.2°
Comet C/2017 S2 (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/2017 S2 (PANSTARRS) touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet C/2017 S2 (PANSTARRS) Orbital Elements

The following table lists the orbital elements of Comet C/2017 S2 (PANSTARRS) at epoch 02 October 2017 00:00 UTC (JD: 2458029.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.82311658
Orbit inclination i 12.68333119°
Perihelion distance q 3.61449885 AU
540,721,332 km
Aphelion distance Q 37.25421504 AU
5,573,151,255 km
Semi-major axis a 20.43435694 AU
3,056,936,294 km
Orbital period period 92.3700 years
33,739.5969 days
Date of perihelion transit Tp 2017-Aug-29 07:50:40
2,457,994.8269 JD
Next perihelion transit 2110-Jan-13 22:10
2,491,734.4238 JD
Argument of perihelion peri 305.97039951987°
Longitude of the ascending node node 62.427828044056°
Mean anomaly M 0.36996092649904°
Mean motion n 0.01066996°/day

Visualization of Comet C/2017 S2 (PANSTARRS) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2017 S2 (PANSTARRS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2017 S2 (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/2017 S2 (PANSTARRS)
View Comet C/2017 S2 (PANSTARRS) in the 3D Solar System Simulator

Comet C/2017 S2 (PANSTARRS) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2017 S2 (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/2017 S2 (PANSTARRS) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Mar 22 06h 48m 23s +32° 21’ 47” 30.38 Gemini
2020 Mar 23 06h 48m 29s +32° 20’ 49” 30.39 Gemini
2020 Mar 24 06h 48m 38s +32° 19’ 51” 30.41 Gemini
2020 Mar 25 06h 48m 47s +32° 18’ 53” 30.42 Gemini
2020 Mar 26 06h 48m 56s +32° 17’ 54” 30.43 Gemini
2020 Mar 27 06h 49m 05s +32° 16’ 55” 30.44 Gemini
2020 Mar 28 06h 49m 14s +32° 15’ 56” 30.46 Gemini
2020 Mar 29 06h 49m 26s +32° 14’ 56” 30.47 Gemini
2020 Mar 30 06h 49m 37s +32° 13’ 55” 30.48 Gemini
2020 Mar 31 06h 49m 49s +32° 12’ 54” 30.50 Gemini
2020 Apr 01 06h 50m 02s +32° 11’ 53” 30.51 Gemini
2020 Apr 02 06h 50m 15s +32° 10’ 50” 30.52 Gemini
2020 Apr 03 06h 50m 27s +32° 09’ 48” 30.53 Gemini
2020 Apr 04 06h 50m 41s +32° 08’ 45” 30.55 Gemini