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Comet C/2015 V2 (Johnson)

Available Resources

Comet C/2015 V2 (Johnson) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2015 V2 (Johnson) 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 V2 (Johnson) in Phoenix on October, 18 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]
01h 19m 56s
-54° 38’ 11”

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 V2 (Johnson) Rise and Set Times

Comet C/2015 V2 (Johnson) is currently not visible from Greenwich, United Kingdom [change]

Comet C/2015 V2 (Johnson) Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2015 V2 (Johnson) with respect of the Sun and the orbits of the major planets. The position of Comet C/2015 V2 (Johnson) 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 V2 (Johnson)
View Comet C/2015 V2 (Johnson) in the 3D Solar System Simulator

Comet C/2015 V2 (Johnson) Ephemeris

The following table lists the ephemerides of Comet C/2015 V2 (Johnson) 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 V2 (Johnson) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2018 Oct 11 01h 26m 43s -54° 49’ 00” 17.03 Eridanus
2018 Oct 12 01h 25m 45s -54° 48’ 06” 17.04 Eridanus
2018 Oct 13 01h 24m 47s -54° 46’ 59” 17.05 Phoenix
2018 Oct 14 01h 23m 49s -54° 45’ 42” 17.06 Phoenix
2018 Oct 15 01h 22m 54s -54° 44’ 12” 17.07 Phoenix
2018 Oct 16 01h 21m 56s -54° 42’ 30” 17.08 Phoenix
2018 Oct 17 01h 21m 01s -54° 40’ 37” 17.09 Phoenix
2018 Oct 18 01h 20m 04s -54° 38’ 32” 17.10 Phoenix
2018 Oct 19 01h 19m 09s -54° 36’ 16” 17.11 Phoenix
2018 Oct 20 01h 18m 15s -54° 33’ 50” 17.13 Phoenix
2018 Oct 21 01h 17m 21s -54° 31’ 10” 17.14 Phoenix
2018 Oct 22 01h 16m 27s -54° 28’ 20” 17.15 Phoenix
2018 Oct 23 01h 15m 33s -54° 25’ 19” 17.16 Phoenix
2018 Oct 24 01h 14m 42s -54° 22’ 08” 17.17 Phoenix

Distance of Comet C/2015 V2 (Johnson) from Earth

The following chart shows the distance of Comet C/2015 V2 (Johnson) 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 V2 (Johnson) is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet C/2015 V2 (Johnson) from Earth between January 2013 and December 2075

Light Curve of Comet C/2015 V2 (Johnson)

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2015 V2 (Johnson), 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 V2 (Johnson) between January 2013 and December 2075

Comet C/2015 V2 (Johnson) Orbital Elements

The following table lists the orbital elements of Comet C/2015 V2 (Johnson) at epoch 06 January 2017 00:00 UTC (JD: 2457760.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00168715
Orbit inclination i 49.87483322°
Perihelion distance q 1.63694166 AU
244,882,988 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2017-Jun-12 08:21:47
2,457,916.8485 JD
Argument of perihelion peri 164.89843586371°
Longitude of the ascending node node 69.852396971516°
Mean anomaly M -0.0050989043775138°
Mean motion n 0.00003261°/day
Closest approach to Earth* 2017-Jun-05
Distance of closest approach* 0.81110385 AU
121,339,408 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.