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Comet C/2018 A1 (PANSTARRS)

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Comet C/2018 A1 (PANSTARRS) Position

Comet C/2018 A1 (PANSTARRS) is currently in the constellation of Crater. The current Right Ascension is 11h 20m 27s and the Declination is -17° 04’ 20”.

11h 20m 27s
-17° 04’ 20”

Simplified sky chart showing where Comet C/2018 A1 (PANSTARRS) is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)

Map showing Comet C/2018 A1 (PANSTARRS) in Crater on October, 18 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 C/2018 A1 (PANSTARRS) is right now (view fullscreen)

RA: 11h 20m 27s
Dec: -17° 04’ 20”
Deep sky finder chart for Comet C/2018 A1 (PANSTARRS)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2018 A1 (PANSTARRS)?, a page that provides all the information needed to find Comet C/2018 A1 (PANSTARRS) in the sky and additional links to sky charts.

Comet C/2018 A1 (PANSTARRS) Distance

The distance of Comet C/2018 A1 (PANSTARRS) from Earth is currently 1,150,531,864 kilometers, equivalent to 7.690830 Astronomical Units. Light takes 1 hours, 3 minutes and 57.7612 seconds to travel from Comet C/2018 A1 (PANSTARRS) and arrive to us.

1 hours, 3 minutes and 57.7612 seconds

The following chart shows the distance of Comet C/2018 A1 (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/2018 A1 (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/2018 A1 (PANSTARRS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2018 A1 (PANSTARRS) to Earth

Between January 2013 and December 2100 the closest approach of Comet C/2018 A1 (PANSTARRS) to Earth happens on Tue Jan 16 2018 at a distance of 1.94303435 Astronomical Units, or 290,673,803 kilometers:

Tue Jan 16 2018

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

Comet C/2018 A1 (PANSTARRS) brightness

The current visual magnitude of Comet C/2018 A1 (PANSTARRS) is 26.57.


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/2018 A1 (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/2018 A1 (PANSTARRS) between January 2013 and December 2100

Comet C/2018 A1 (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/2018 A1 (PANSTARRS) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 107.1°
Max altitude: 21.4°
Azimuth: 252.9°
Comet C/2018 A1 (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/2018 A1 (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/2018 A1 (PANSTARRS) Orbital Elements

The following table lists the orbital elements of Comet C/2018 A1 (PANSTARRS) at epoch 05 February 2018 00:00 UTC (JD: 2458155.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.90438796
Orbit inclination i 53.56000862°
Perihelion distance q 2.41935291 AU
361,930,045 km
Aphelion distance Q 48.18834965 AU
7,208,874,515 km
Semi-major axis a 25.30385128 AU
3,785,402,280 km
Orbital period period 127.2900 years
46,492.0147 days
Date of perihelion transit Tp 2017-Oct-20 10:16:29
2,458,046.9281 JD
Next perihelion transit 2145-Feb-03 10:37
2,504,538.9428 JD
Argument of perihelion peri 96.385347877522°
Longitude of the ascending node node 336.62101218368°
Mean anomaly M 0.84070084041763°
Mean motion n 0.00774327°/day

Visualization of Comet C/2018 A1 (PANSTARRS) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2018 A1 (PANSTARRS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2018 A1 (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/2018 A1 (PANSTARRS)
View Comet C/2018 A1 (PANSTARRS) in the 3D Solar System Simulator

Comet C/2018 A1 (PANSTARRS) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2018 A1 (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/2018 A1 (PANSTARRS) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Oct 11 11h 17m 13s -16° 19’ 23” 26.54 Crater
2019 Oct 12 11h 17m 40s -16° 25’ 35” 26.54 Crater
2019 Oct 13 11h 18m 09s -16° 31’ 48” 26.55 Crater
2019 Oct 14 11h 18m 36s -16° 38’ 00” 26.55 Crater
2019 Oct 15 11h 19m 03s -16° 44’ 13” 26.56 Crater
2019 Oct 16 11h 19m 28s -16° 50’ 29” 26.56 Crater
2019 Oct 17 11h 19m 55s -16° 56’ 43” 26.57 Crater
2019 Oct 18 11h 20m 21s -17° 02’ 58” 26.57 Crater
2019 Oct 19 11h 20m 48s -17° 09’ 15” 26.58 Crater
2019 Oct 20 11h 21m 12s -17° 15’ 32” 26.58 Crater
2019 Oct 21 11h 21m 38s -17° 21’ 48” 26.59 Crater
2019 Oct 22 11h 22m 04s -17° 28’ 06” 26.59 Crater
2019 Oct 23 11h 22m 28s -17° 34’ 24” 26.60 Crater
2019 Oct 24 11h 22m 53s -17° 40’ 44” 26.60 Crater