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Comet P/2017 R1 (PANSTARRS)

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Comet P/2017 R1 (PANSTARRS) Position

Comet P/2017 R1 (PANSTARRS) is currently in the constellation of Gemini. The current Right Ascension is 06h 21m 15s and the Declination is +21° 21’ 24”.

06h 21m 15s
+21° 21’ 24”

Simplified sky chart showing where Comet P/2017 R1 (PANSTARRS) is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Comet P/2017 R1 (PANSTARRS) in Gemini on August, 23 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 P/2017 R1 (PANSTARRS) is right now (view fullscreen)

RA: 06h 21m 15s
Dec: +21° 21’ 24”
Deep sky finder chart for Comet P/2017 R1 (PANSTARRS)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet P/2017 R1 (PANSTARRS)?, a page that provides all the information needed to find Comet P/2017 R1 (PANSTARRS) in the sky and additional links to sky charts.

Comet P/2017 R1 (PANSTARRS) Distance

The distance of Comet P/2017 R1 (PANSTARRS) from Earth is currently 738,934,983 kilometers, equivalent to 4.939475 Astronomical Units. Light takes 41 minutes and 4.8218 seconds to travel from Comet P/2017 R1 (PANSTARRS) and arrive to us.

41 minutes and 4.8218 seconds

The following chart shows the distance of Comet P/2017 R1 (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 P/2017 R1 (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 P/2017 R1 (PANSTARRS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet P/2017 R1 (PANSTARRS) to Earth

Between January 2013 and December 2100 the closest approach of Comet P/2017 R1 (PANSTARRS) to Earth happens on Fri Aug 13 2100 at a distance of 1.25243941 Astronomical Units, or 187,362,270 kilometers:

Fri Aug 13 2100

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

Comet P/2017 R1 (PANSTARRS) brightness

The current visual magnitude of Comet P/2017 R1 (PANSTARRS) is 23.93.


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 P/2017 R1 (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 P/2017 R1 (PANSTARRS) between January 2013 and December 2100

Comet P/2017 R1 (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 P/2017 R1 (PANSTARRS) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 68.6°
Max altitude: 59.9°
Azimuth: 291.4°
Comet P/2017 R1 (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 P/2017 R1 (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 P/2017 R1 (PANSTARRS) Orbital Elements

The following table lists the orbital elements of Comet P/2017 R1 (PANSTARRS) at epoch 10 September 2017 00:00 UTC (JD: 2458007.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.19481283
Orbit inclination i 2.57311836°
Perihelion distance q 3.32723757 AU
497,747,657 km
Aphelion distance Q 4.93726964 AU
738,605,027 km
Semi-major axis a 4.13225361 AU
618,176,342 km
Orbital period period 8.4000 years
3,068.1662 days
Date of perihelion transit Tp 2017-Apr-08 02:56:00
2,457,851.6222 JD
Next perihelion transit 2025-Sep-01 06:55
2,460,919.7884 JD
Argument of perihelion peri 178.36482616836°
Longitude of the ascending node node 143.6504032786°
Mean anomaly M 18.289751273335°
Mean motion n 0.11733393°/day

Visualization of Comet P/2017 R1 (PANSTARRS) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet P/2017 R1 (PANSTARRS) with respect of the Sun and the orbits of the major planets. The position of Comet P/2017 R1 (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 P/2017 R1 (PANSTARRS)
View Comet P/2017 R1 (PANSTARRS) in the 3D Solar System Simulator

Comet P/2017 R1 (PANSTARRS) 15 Days Ephemeris

The following table lists the ephemerides of Comet P/2017 R1 (PANSTARRS) 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 R1 (PANSTARRS) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Aug 16 06h 14m 38s +21° 25’ 36” 23.96 Orion
2019 Aug 17 06h 15m 32s +21° 25’ 06” 23.95 Orion
2019 Aug 18 06h 16m 24s +21° 24’ 37” 23.95 Orion
2019 Aug 19 06h 17m 17s +21° 24’ 05” 23.95 Orion
2019 Aug 20 06h 18m 10s +21° 23’ 31” 23.95 Orion
2019 Aug 21 06h 19m 01s +21° 22’ 58” 23.94 Orion
2019 Aug 22 06h 19m 54s +21° 22’ 23” 23.94 Orion
2019 Aug 23 06h 20m 44s +21° 21’ 47” 23.94 Gemini
2019 Aug 24 06h 21m 34s +21° 21’ 10” 23.93 Gemini
2019 Aug 25 06h 22m 26s +21° 20’ 31” 23.93 Gemini
2019 Aug 26 06h 23m 15s +21° 19’ 53” 23.93 Gemini
2019 Aug 27 06h 24m 03s +21° 19’ 13” 23.92 Gemini
2019 Aug 28 06h 24m 52s +21° 18’ 32” 23.92 Gemini
2019 Aug 29 06h 25m 41s +21° 17’ 50” 23.92 Gemini