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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 September, 22 2017
03h 56m 54s
+22° 56’ 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: 67.1°
Max altitude: 61.5°
Azimuth: 292.9°

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
2017 Sep 15 12.83 03h 58m 42s +23° 13’ 08” Taurus
2017 Sep 16 12.84 03h 58m 33s +23° 11’ 08” Taurus
2017 Sep 17 12.86 03h 58m 23s +23° 09’ 02” Taurus
2017 Sep 18 12.88 03h 58m 09s +23° 06’ 50” Taurus
2017 Sep 19 12.89 03h 57m 53s +23° 04’ 29” Taurus
2017 Sep 20 12.91 03h 57m 36s +23° 02’ 03” Taurus
2017 Sep 21 12.92 03h 57m 16s +22° 59’ 29” Taurus
2017 Sep 22 12.94 03h 56m 54s +22° 56’ 48” Taurus
2017 Sep 23 12.95 03h 56m 30s +22° 54’ 01” Taurus
2017 Sep 24 12.97 03h 56m 03s +22° 51’ 06” Taurus
2017 Sep 25 12.98 03h 55m 36s +22° 48’ 03” Taurus
2017 Sep 26 13.00 03h 55m 05s +22° 44’ 56” Taurus
2017 Sep 27 13.02 03h 54m 33s +22° 41’ 39” Taurus
2017 Sep 28 13.03 03h 53m 59s +22° 38’ 17” 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.

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 23 October 2016 00:00 UTC (JD: 2457685.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99753319
Orbit inclination i 6.34648098°
Perihelion distance q 1.04220707 AU
155,911,958 km
Aphelion distance Q 843.94123311 AU
126,251,811,722 km
Semi-major axis a 422.49172009 AU
63,203,861,840 km
Orbital period period 8,684.3100 years
3,171,945.5977 days
Date of perihelion transit Tp 2017-May-09 22:06:21
2,457,883.4211 JD
Next perihelion transit 10701-Nov-06 12:27
5,629,829.0188 JD
Argument of perihelion peri 68.167926825199°
Longitude of the ascending node node 235.23412745947°
Mean anomaly M 359.97753694401°
Mean motion n 0.00011350°/day
Closest approach to Earth* 2017-Apr-19
Distance of closest approach* 1.17844533 AU
176,292,913 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.