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Comet C/2018 A1 (PANSTARRS)

Available Resources

Comet C/2018 A1 (PANSTARRS) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2018 A1 (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 C/2018 A1 (PANSTARRS) in Cancer on June, 20 2018
High Precision Live Sky Chart
09h 22m 02s
+26° 31’ 01”
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Comet C/2018 A1 (PANSTARRS) Rise and Set Times

Today's Comet C/2018 A1 (PANSTARRS) rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 63.5°
Max altitude: 65.0°
Azimuth: 296.5°

Comet C/2018 A1 (PANSTARRS) Orbit Diagram

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) 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 MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2018 Jun 13 21.44 09h 15m 07s +28° 07’ 14” Cancer
2018 Jun 14 21.46 09h 16m 06s +27° 53’ 17” Cancer
2018 Jun 15 21.48 09h 17m 06s +27° 39’ 24” Cancer
2018 Jun 16 21.50 09h 18m 05s +27° 25’ 36” Cancer
2018 Jun 17 21.52 09h 19m 05s +27° 11’ 51” Cancer
2018 Jun 18 21.54 09h 20m 03s +26° 58’ 10” Cancer
2018 Jun 19 21.56 09h 21m 02s +26° 44’ 34” Cancer
2018 Jun 20 21.58 09h 22m 02s +26° 31’ 01” Cancer
2018 Jun 21 21.60 09h 23m 02s +26° 17’ 34” Leo
2018 Jun 22 21.62 09h 24m 02s +26° 04’ 09” Leo
2018 Jun 23 21.64 09h 25m 00s +25° 50’ 48” Leo
2018 Jun 24 21.66 09h 26m 00s +25° 37’ 32” Leo
2018 Jun 25 21.68 09h 26m 59s +25° 24’ 19” Leo
2018 Jun 26 21.70 09h 27m 59s +25° 11’ 08” Leo

Distance of Comet C/2018 A1 (PANSTARRS) from Earth

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

Distance of Comet C/2018 A1 (PANSTARRS) from Earth between January 2013 and December 2075

Light Curve of Comet C/2018 A1 (PANSTARRS)

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 2075

Comet C/2018 A1 (PANSTARRS) Orbital Elements

The following table lists the orbital elements of Comet C/2018 A1 (PANSTARRS) at epoch 04 February 2018 00:00 UTC (JD: 2458154.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.90438034
Orbit inclination i 53.55995334°
Perihelion distance q 2.41936201 AU
361,931,406 km
Aphelion distance Q 48.18449800 AU
7,208,298,316 km
Semi-major axis a 25.30193001 AU
3,785,114,861 km
Orbital period period 127.2700 years
46,486.7197 days
Date of perihelion transit Tp 2017-Oct-20 10:19:47
2,458,046.9304 JD
Next perihelion transit 2145-Jan-29 03:36
2,504,533.6501 JD
Argument of perihelion peri 96.386243372283°
Longitude of the ascending node node 336.62107960431°
Mean anomaly M 0.83303475049017°
Mean motion n 0.00774415°/day
Closest approach to Earth* 2018-Jan-16
Distance of closest approach* 1.94303255 AU
290,673,533 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.