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Comet C/2017 Y2 (PANSTARRS)

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Comet C/2017 Y2 (PANSTARRS) Position

Comet C/2017 Y2 (PANSTARRS) is currently in the constellation of Cygnus. The current Right Ascension is 21h 22m 00s and the Declination is +48° 40’ 10”.

21h 22m 00s
+48° 40’ 10”

Simplified sky chart showing where Comet C/2017 Y2 (PANSTARRS) is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Comet C/2017 Y2 (PANSTARRS) in Cygnus on June, 24 2019
Field of view: 60x30 degrees
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 = 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/2017 Y2 (PANSTARRS) is right now (view fullscreen)

RA: 21h 22m 00s
Dec: +48° 40’ 10”
Deep sky finder chart for Comet C/2017 Y2 (PANSTARRS)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2017 Y2 (PANSTARRS)?, a page that provides all the information needed to find Comet C/2017 Y2 (PANSTARRS) in the sky and additional links to sky charts.

Comet C/2017 Y2 (PANSTARRS) Distance

The distance of Comet C/2017 Y2 (PANSTARRS) from Earth is currently 762,613,808 kilometers, equivalent to 5.097758 Astronomical Units. Light takes 42 minutes and 23.8058 seconds to travel from Comet C/2017 Y2 (PANSTARRS) and arrive to us.

42 minutes and 23.8058 seconds

The following chart shows the distance of Comet C/2017 Y2 (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 Y2 (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 Y2 (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 Y2 (PANSTARRS) to Earth

Between January 2013 and December 2100 the closest approach of Comet C/2017 Y2 (PANSTARRS) to Earth happens on Wed Jun 24 2020 at a distance of 3.18089655 Astronomical Units, or 475,855,352 kilometers:

Wed Jun 24 2020

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

Comet C/2017 Y2 (PANSTARRS) brightness

The current visual magnitude of Comet C/2017 Y2 (PANSTARRS) is 18.78.


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/2017 Y2 (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 Y2 (PANSTARRS) between January 2013 and December 2100

Comet C/2017 Y2 (PANSTARRS) rise and set times

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

Comet C/2017 Y2 (PANSTARRS) is circumpolar and transits at 03:14 UTC (altitude: 87.2°)

The rise and set times are defined as the time at which the upper limb of Comet C/2017 Y2 (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/2017 Y2 (PANSTARRS) Orbital Elements

The following table lists the orbital elements of Comet C/2017 Y2 (PANSTARRS) at epoch 29 December 2017 00:00 UTC (JD: 2458117.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99841903
Orbit inclination i 124.67079950°
Perihelion distance q 3.95699349 AU
591,957,802 km
Aphelion distance Q 5,001.81654839 AU
748,261,106,772 km
Semi-major axis a 2,502.88677094 AU
374,426,532,287 km
Orbital period period 125,218.9400 years
45,736,216.0903 days
Date of perihelion transit Tp 2020-Aug-19 04:02:01
2,459,080.6681 JD
Argument of perihelion peri 149.40252195488°
Longitude of the ascending node node 59.007221535776°
Mean anomaly M 359.99241868839°
Mean motion n 0.00000787°/day

Visualization of Comet C/2017 Y2 (PANSTARRS) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2017 Y2 (PANSTARRS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2017 Y2 (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 Y2 (PANSTARRS)
View Comet C/2017 Y2 (PANSTARRS) in the 3D Solar System Simulator

Comet C/2017 Y2 (PANSTARRS) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2017 Y2 (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 Y2 (PANSTARRS) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Jun 17 21h 31m 22s +47° 57’ 42” 18.87 Cygnus
2019 Jun 18 21h 30m 15s +48° 03’ 37” 18.86 Cygnus
2019 Jun 19 21h 29m 07s +48° 09’ 24” 18.85 Cygnus
2019 Jun 20 21h 27m 56s +48° 15’ 05” 18.84 Cygnus
2019 Jun 21 21h 26m 44s +48° 20’ 35” 18.83 Cygnus
2019 Jun 22 21h 25m 32s +48° 25’ 59” 18.82 Cygnus
2019 Jun 23 21h 24m 16s +48° 31’ 14” 18.81 Cygnus
2019 Jun 24 21h 23m 00s +48° 36’ 19” 18.79 Cygnus
2019 Jun 25 21h 21m 42s +48° 41’ 13” 18.78 Cygnus
2019 Jun 26 21h 20m 23s +48° 46’ 00” 18.77 Cygnus
2019 Jun 27 21h 19m 02s +48° 50’ 35” 18.76 Cygnus
2019 Jun 28 21h 17m 40s +48° 54’ 59” 18.75 Cygnus
2019 Jun 29 21h 16m 18s +48° 59’ 12” 18.74 Cygnus
2019 Jun 30 21h 14m 52s +49° 03’ 14” 18.73 Cygnus