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Comet C/2015 ER61 (PANSTARRS)

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Comet C/2015 ER61 (PANSTARRS) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2015 ER61 (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/2015 ER61 (PANSTARRS) in Taurus on May, 25 2018
High Precision Live Sky Chart
04h 25m 08s
+20° 23’ 48”
 = 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/2015 ER61 (PANSTARRS) Rise and Set Times

Today's Comet C/2015 ER61 (PANSTARRS) rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 69.6°
Max altitude: 58.9°
Azimuth: 290.4°

Comet C/2015 ER61 (PANSTARRS) Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2015 ER61 (PANSTARRS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2015 ER61 (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/2015 ER61 (PANSTARRS)
View Comet C/2015 ER61 (PANSTARRS) in the 3D Solar System Simulator

Comet C/2015 ER61 (PANSTARRS) Ephemeris

The following table lists the ephemerides of Comet C/2015 ER61 (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/2015 ER61 (PANSTARRS) in our Online Planetarium at the chosen date.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2018 May 18 18.65 04h 18m 47s +20° 11’ 05” Taurus
2018 May 19 18.66 04h 19m 41s +20° 12’ 59” Taurus
2018 May 20 18.67 04h 20m 35s +20° 14’ 50” Taurus
2018 May 21 18.68 04h 21m 30s +20° 16’ 41” Taurus
2018 May 22 18.69 04h 22m 24s +20° 18’ 29” Taurus
2018 May 23 18.70 04h 23m 20s +20° 20’ 17” Taurus
2018 May 24 18.71 04h 24m 14s +20° 22’ 04” Taurus
2018 May 25 18.72 04h 25m 08s +20° 23’ 48” Taurus
2018 May 26 18.73 04h 26m 02s +20° 25’ 31” Taurus
2018 May 27 18.74 04h 26m 56s +20° 27’ 12” Taurus
2018 May 28 18.75 04h 27m 50s +20° 28’ 51” Taurus
2018 May 29 18.76 04h 28m 42s +20° 30’ 30” Taurus
2018 May 30 18.77 04h 29m 36s +20° 32’ 07” Taurus
2018 May 31 18.78 04h 30m 29s +20° 33’ 42” Taurus

Distance of Comet C/2015 ER61 (PANSTARRS) from Earth

The following chart shows the distance of Comet C/2015 ER61 (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/2015 ER61 (PANSTARRS) is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet C/2015 ER61 (PANSTARRS) from Earth between January 2013 and December 2075

Light Curve of Comet C/2015 ER61 (PANSTARRS)

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2015 ER61 (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/2015 ER61 (PANSTARRS) between January 2013 and December 2075

Comet C/2015 ER61 (PANSTARRS) Orbital Elements

The following table lists the orbital elements of Comet C/2015 ER61 (PANSTARRS) at epoch 24 April 2017 00:00 UTC (JD: 2457868.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99728266
Orbit inclination i 6.34864860°
Perihelion distance q 1.04213184 AU
155,900,704 km
Aphelion distance Q 765.98128555 AU
114,589,169,545 km
Semi-major axis a 383.51170870 AU
57,372,535,124 km
Orbital period period 7,510.6300 years
2,743,256.1927 days
Date of perihelion transit Tp 2017-May-09 22:39:07
2,457,883.4438 JD
Next perihelion transit 9528-Feb-20 03:16
5,201,139.6365 JD
Argument of perihelion peri 68.192144684817°
Longitude of the ascending node node 235.22183130414°
Mean anomaly M 359.9980389074°
Mean motion n 0.00013123°/day
Closest approach to Earth* 2017-Apr-19
Distance of closest approach* 1.17846385 AU
176,295,683 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.