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Comet C/2015 ER61 (PANSTARRS)

Available Resources

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 November, 15 2018
High Precision Live Sky Chart
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]
05h 18m 50s
+20° 25’ 49”

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.

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 Europe/London timezone.

Azimuth: 69.6°
Max altitude: 59.0°
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 Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2018 Nov 08 05h 22m 50s +20° 33’ 08” 19.95 Taurus
2018 Nov 09 05h 22m 20s +20° 32’ 13” 19.95 Taurus
2018 Nov 10 05h 21m 51s +20° 31’ 18” 19.96 Taurus
2018 Nov 11 05h 21m 20s +20° 30’ 21” 19.96 Taurus
2018 Nov 12 05h 20m 51s +20° 29’ 26” 19.97 Taurus
2018 Nov 13 05h 20m 20s +20° 28’ 30” 19.97 Taurus
2018 Nov 14 05h 19m 48s +20° 27’ 33” 19.98 Taurus
2018 Nov 15 05h 19m 17s +20° 26’ 35” 19.99 Taurus
2018 Nov 16 05h 18m 45s +20° 25’ 38” 19.99 Taurus
2018 Nov 17 05h 18m 12s +20° 24’ 42” 20.00 Taurus
2018 Nov 18 05h 17m 39s +20° 23’ 44” 20.00 Taurus
2018 Nov 19 05h 17m 07s +20° 22’ 45” 20.01 Taurus
2018 Nov 20 05h 16m 33s +20° 21’ 47” 20.01 Taurus
2018 Nov 21 05h 16m 00s +20° 20’ 49” 20.02 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 27 April 2017 00:00 UTC (JD: 2457871.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99728031
Orbit inclination i 6.34864477°
Perihelion distance q 1.04213203 AU
155,900,733 km
Aphelion distance Q 765.31953046 AU
114,490,172,392 km
Semi-major axis a 383.18083125 AU
57,323,036,562 km
Orbital period period 7,500.9100 years
2,739,706.8129 days
Date of perihelion transit Tp 2017-May-09 22:39:07
2,457,883.4438 JD
Next perihelion transit 9518-Jun-02 18:09
5,197,590.2567 JD
Argument of perihelion peri 68.192180660498°
Longitude of the ascending node node 235.22180545848°
Mean anomaly M 359.99843056811°
Mean motion n 0.00013140°/day
Closest approach to Earth* 2017-Apr-19
Distance of closest approach* 1.17846421 AU
176,295,737 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.