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🌎  Greenwich, United Kingdom [change]

Comet P/2017 S5 (ATLAS)

Comet P/2017 S5 (ATLAS) is currently in the constellation of Sagittarius. The current Right Ascension of Comet P/2017 S5 (ATLAS) is 18h 28m 56s and the Declination is -20° 04’ 05” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet P/2017 S5 (ATLAS) is 20.92 (JPL).

Summary of key facts about Comet P/2017 S5 (ATLAS) [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

18h 28m 56s
-20° 04’ 05”

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Comet P/2017 S5 (ATLAS) available on TheSkyLive:

Available Resources

Comet P/2017 S5 (ATLAS) Position and Finder Charts

Below we provide Comet P/2017 S5 (ATLAS) finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet P/2017 S5 (ATLAS) in Sagittarius on May, 16 2022
Field of view: 50x30 degrees
View fullscreen
Map showing Comet P/2017 S5 (ATLAS) in Sagittarius on May, 16 2022
Field of view: 10x6 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, 60 arcmin wide, showing where Comet P/2017 S5 (ATLAS) is right now. Click on the image to see a more detailed fullscreen tracker view.

P/2017 S5 (ATLAS)
RA: 18h 28m 56s
Dec: -20° 04’ 05”
Deep sky finder chart for Comet P/2017 S5 (ATLAS)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet P/2017 S5 (ATLAS)?, a page that provides all the information needed to find Comet P/2017 S5 (ATLAS) in the sky and additional links to sky charts.

Comet P/2017 S5 (ATLAS) Distance from Earth

The distance of Comet P/2017 S5 (ATLAS) from Earth is currently 299,008,440 kilometers, equivalent to 1.998748 Astronomical Units. Light takes 16 minutes and 37.3848 seconds to travel from Comet P/2017 S5 (ATLAS) and arrive to us.

16 minutes and 37.3848 seconds

The following chart shows the distance of Comet P/2017 S5 (ATLAS) 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 P/2017 S5 (ATLAS) 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 P/2017 S5 (ATLAS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet P/2017 S5 (ATLAS) to Earth

Between January 2013 and December 2100, the closest approach of Comet P/2017 S5 (ATLAS) to Earth happens on Fri Sep 15 2045 at a distance of 1.194405 Astronomical Units, or 178,680,418 kilometers:

Fri Sep 15 2045

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

Comet P/2017 S5 (ATLAS) brightness

The current visual magnitude of Comet P/2017 S5 (ATLAS) is 20.92.


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 P/2017 S5 (ATLAS), 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 P/2017 S5 (ATLAS) between January 2013 and December 2100

Comet P/2017 S5 (ATLAS) 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 P/2017 S5 (ATLAS) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 110.0°
Max altitude: 18.4°
Azimuth: 249.9°

The rise and set times are defined as the time at which the upper limb of Comet P/2017 S5 (ATLAS) 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 P/2017 S5 (ATLAS) Orbital Elements

The following table lists the orbital elements of Comet P/2017 S5 (ATLAS) at epoch 22 November 2017 00:00 UTC (JD: 2458080.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.31304498
Orbit inclination i 11.84937248°
Perihelion distance q 2.17822414 AU
325,857,693 km
Aphelion distance Q 4.16345496 AU
622,843,997 km
Semi-major axis a 3.17083955 AU
474,350,845 km
Orbital period period 5.6464 years
2,062.3379 days
Date of perihelion transit Tp 2017-Jul-28 00:34:23
2,457,962.5239 JD
Next perihelion transit 2023-Mar-21 08:40
2,460,024.8618 JD
Argument of perihelion peri 99.944336594401°
Longitude of the ascending node node 252.39100053319°
Mean anomaly M 20.593813851164°
Mean motion n 0.17455917°/day

Visualization of Comet P/2017 S5 (ATLAS) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet P/2017 S5 (ATLAS) with respect of the Sun and the orbits of the major planets. The position of Comet P/2017 S5 (ATLAS) 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 P/2017 S5 (ATLAS)
View Comet P/2017 S5 (ATLAS) in the 3D Solar System Simulator

Comet P/2017 S5 (ATLAS) 15 Days Ephemeris

The following table lists the ephemerides of Comet P/2017 S5 (ATLAS) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet P/2017 S5 (ATLAS) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2022 May 09 18h 30m 16s -20° 36’ 32” 21.10 Sagittarius
2022 May 10 18h 30m 11s -20° 32’ 21” 21.07 Sagittarius
2022 May 11 18h 30m 03s -20° 28’ 09” 21.05 Sagittarius
2022 May 12 18h 29m 56s -20° 23’ 57” 21.03 Sagittarius
2022 May 13 18h 29m 45s -20° 19’ 42” 21.00 Sagittarius
2022 May 14 18h 29m 34s -20° 15’ 27” 20.98 Sagittarius
2022 May 15 18h 29m 21s -20° 11’ 11” 20.96 Sagittarius
2022 May 16 18h 29m 07s -20° 06’ 52” 20.94 Sagittarius
2022 May 17 18h 28m 50s -20° 02’ 34” 20.91 Sagittarius
2022 May 18 18h 28m 32s -19° 58’ 14” 20.89 Sagittarius
2022 May 19 18h 28m 14s -19° 53’ 53” 20.87 Sagittarius
2022 May 20 18h 27m 52s -19° 49’ 32” 20.85 Sagittarius
2022 May 21 18h 27m 30s -19° 45’ 09” 20.82 Sagittarius
2022 May 22 18h 27m 07s -19° 40’ 45” 20.80 Sagittarius