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Comet C/2015 X7 (ATLAS)

Available Resources

Comet C/2015 X7 (ATLAS) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2015 X7 (ATLAS) 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 X7 (ATLAS) in Bootes on January, 24 2018
High Precision Live Sky Chart
14h 51m 10s
+38° 54’ 15”
20.29
 = 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 X7 (ATLAS) Rise and Set Times

Comet C/2015 X7 (ATLAS) is circumpolar from Greenwich, United Kingdom [change] and transits at 06:37 UTC (altitude: 77.4°)

Comet C/2015 X7 (ATLAS) Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2015 X7 (ATLAS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2015 X7 (ATLAS) 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 X7 (ATLAS)
View Comet C/2015 X7 (ATLAS) in the 3D Solar System Simulator

Comet C/2015 X7 (ATLAS) Ephemeris

The following table lists the ephemerides of Comet C/2015 X7 (ATLAS) 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 X7 (ATLAS) in our Online Planetarium at the chosen date.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2018 Jan 17 20.27 14h 47m 11s +38° 00’ 30” Bootes
2018 Jan 18 20.27 14h 47m 47s +38° 07’ 59” Bootes
2018 Jan 19 20.28 14h 48m 23s +38° 15’ 32” Bootes
2018 Jan 20 20.28 14h 48m 57s +38° 23’ 08” Bootes
2018 Jan 21 20.28 14h 49m 32s +38° 30’ 50” Bootes
2018 Jan 22 20.28 14h 50m 04s +38° 38’ 35” Bootes
2018 Jan 23 20.28 14h 50m 38s +38° 46’ 23” Bootes
2018 Jan 24 20.29 14h 51m 10s +38° 54’ 15” Bootes
2018 Jan 25 20.29 14h 51m 42s +39° 02’ 12” Bootes
2018 Jan 26 20.29 14h 52m 11s +39° 10’ 12” Bootes
2018 Jan 27 20.29 14h 52m 41s +39° 18’ 15” Bootes
2018 Jan 28 20.29 14h 53m 11s +39° 26’ 21” Bootes
2018 Jan 29 20.30 14h 53m 39s +39° 34’ 30” Bootes
2018 Jan 30 20.30 14h 54m 06s +39° 42’ 42” Bootes

Distance of Comet C/2015 X7 (ATLAS) from Earth

The following chart shows the distance of Comet C/2015 X7 (ATLAS) 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 X7 (ATLAS) is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet C/2015 X7 (ATLAS) from Earth between January 2013 and December 2075

Light Curve of Comet C/2015 X7 (ATLAS)

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2015 X7 (ATLAS), 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 X7 (ATLAS) between January 2013 and December 2075

Comet C/2015 X7 (ATLAS) Orbital Elements

The following table lists the orbital elements of Comet C/2015 X7 (ATLAS) at epoch 11 October 2016 00:00 UTC (JD: 2457673.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00194086
Orbit inclination i 57.57796609°
Perihelion distance q 3.68456242 AU
551,202,694 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2016-Jul-30 06:11:09
2,457,599.7578 JD
Argument of perihelion peri 348.48996990857°
Longitude of the ascending node node 139.88405834485°
Mean anomaly M 0.00087868487015969°
Mean motion n 0.00001192°/day
Closest approach to Earth* 2017-Feb-08
Distance of closest approach* 3.19175344 AU
477,479,520 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.