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Comet P/2017 R1 (PANSTARRS)

Available Resources

Comet P/2017 R1 (PANSTARRS) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet P/2017 R1 (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 P/2017 R1 (PANSTARRS) in Aries on December, 16 2018
High Precision Live Sky Chart
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]
03h 08m 48s
+14° 16’ 24”

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.

Comet P/2017 R1 (PANSTARRS) Rise and Set Times

Today's Comet P/2017 R1 (PANSTARRS) rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the Europe/London timezone.

Azimuth: 75.7°
Max altitude: 52.8°
Azimuth: 284.3°

Comet P/2017 R1 (PANSTARRS) Orbit Diagram

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) 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
2018 Dec 09 03h 12m 02s +14° 25’ 35” 22.44 Aries
2018 Dec 10 03h 11m 31s +14° 24’ 05” 22.45 Aries
2018 Dec 11 03h 11m 03s +14° 22’ 37” 22.46 Aries
2018 Dec 12 03h 10m 33s +14° 21’ 15” 22.47 Aries
2018 Dec 13 03h 10m 06s +14° 19’ 56” 22.47 Aries
2018 Dec 14 03h 09m 39s +14° 18’ 42” 22.48 Aries
2018 Dec 15 03h 09m 14s +14° 17’ 31” 22.49 Aries
2018 Dec 16 03h 08m 48s +14° 16’ 24” 22.50 Aries
2018 Dec 17 03h 08m 24s +14° 15’ 23” 22.51 Aries
2018 Dec 18 03h 08m 00s +14° 14’ 25” 22.52 Aries
2018 Dec 19 03h 07m 38s +14° 13’ 31” 22.53 Aries
2018 Dec 20 03h 07m 17s +14° 12’ 41” 22.54 Aries
2018 Dec 21 03h 06m 56s +14° 11’ 56” 22.55 Aries
2018 Dec 22 03h 06m 37s +14° 11’ 16” 22.56 Aries

Distance of Comet P/2017 R1 (PANSTARRS) from Earth

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

Distance of Comet P/2017 R1 (PANSTARRS) from Earth between January 2013 and December 2075

Light Curve of Comet P/2017 R1 (PANSTARRS)

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 2075

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 0.19481284
Orbit inclination i 2.57311838°
Perihelion distance q 3.32723757 AU
497,747,656 km
Aphelion distance Q 4.93726965 AU
738,605,029 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 178.36482529786°
Longitude of the ascending node node 143.65040339221°
Mean anomaly M 18.289751727925°
Mean motion n 0.11733393°/day
Closest approach to Earth* 2066-Sep-07
Distance of closest approach* 1.25992744 AU
188,482,462 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.