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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 Aries on February, 18 2018
High Precision Live Sky Chart
03h 01m 40s
+16° 24’ 42”
 = 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: 73.6°
Max altitude: 54.9°
Azimuth: 286.4°

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 Feb 11 17.14 02h 57m 06s +16° 08’ 44” Aries
2018 Feb 12 17.17 02h 57m 44s +16° 10’ 54” Aries
2018 Feb 13 17.19 02h 58m 23s +16° 13’ 06” Aries
2018 Feb 14 17.22 02h 59m 00s +16° 15’ 21” Aries
2018 Feb 15 17.24 02h 59m 39s +16° 17’ 39” Aries
2018 Feb 16 17.27 03h 00m 19s +16° 19’ 58” Aries
2018 Feb 17 17.29 03h 00m 59s +16° 22’ 19” Aries
2018 Feb 18 17.32 03h 01m 40s +16° 24’ 42” Aries
2018 Feb 19 17.34 03h 02m 21s +16° 27’ 06” Aries
2018 Feb 20 17.36 03h 03m 02s +16° 29’ 34” Aries
2018 Feb 21 17.39 03h 03m 43s +16° 32’ 02” Aries
2018 Feb 22 17.41 03h 04m 27s +16° 34’ 32” Aries
2018 Feb 23 17.43 03h 05m 09s +16° 37’ 04” Aries
2018 Feb 24 17.46 03h 05m 53s +16° 39’ 36” Aries

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 16 April 2017 00:00 UTC (JD: 2457860.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99728465
Orbit inclination i 6.34865864°
Perihelion distance q 1.04213187 AU
155,900,709 km
Aphelion distance Q 766.54305950 AU
114,673,209,731 km
Semi-major axis a 383.79259568 AU
57,414,555,220 km
Orbital period period 7,518.8800 years
2,746,270.5180 days
Date of perihelion transit Tp 2017-May-09 22:39:04
2,457,883.4438 JD
Next perihelion transit 9536-May-22 11:05
5,204,153.9618 JD
Argument of perihelion peri 68.192090200999°
Longitude of the ascending node node 235.22185096215°
Mean anomaly M 359.99699236957°
Mean motion n 0.00013109°/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.