Comet C/2015 D4 (Borisov)
Comet C/2015 D4 (Borisov) Sky Charts and Coordinates
This is a simplified sky chart, showing where Comet C/2015 D4 (Borisov) 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.
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 D4 (Borisov) Rise and Set Times
Comet C/2015 D4 (Borisov) is circumpolar from Greenwich, United Kingdom [change] and transits at 10:39 UTC (altitude: 56.9°)
Comet C/2015 D4 (Borisov) Orbit Diagram
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2015 D4 (Borisov) with respect of the Sun and the orbits of the major planets. The position of Comet C/2015 D4 (Borisov) 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!
Comet C/2015 D4 (Borisov) Ephemeris
The following table lists the ephemerides of Comet C/2015 D4 (Borisov) 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 D4 (Borisov) in our Online Planetarium at the chosen date.
|2019 Feb 16||20h 31m 49s||+84° 19’ 49”||33.29||Draco|
|2019 Feb 17||20h 34m 28s||+84° 21’ 37”||33.30||Draco|
|2019 Feb 18||20h 37m 09s||+84° 23’ 26”||33.30||Draco|
|2019 Feb 19||20h 39m 51s||+84° 25’ 15”||33.31||Draco|
|2019 Feb 20||20h 42m 32s||+84° 27’ 07”||33.31||Draco|
|2019 Feb 21||20h 45m 14s||+84° 29’ 00”||33.32||Draco|
|2019 Feb 22||20h 47m 56s||+84° 30’ 55”||33.32||Cepheus|
|2019 Feb 23||20h 50m 39s||+84° 32’ 49”||33.33||Cepheus|
|2019 Feb 24||20h 53m 21s||+84° 34’ 46”||33.33||Cepheus|
|2019 Feb 25||20h 56m 04s||+84° 36’ 43”||33.34||Cepheus|
|2019 Feb 26||20h 58m 49s||+84° 38’ 43”||33.34||Cepheus|
|2019 Feb 27||21h 01m 33s||+84° 40’ 44”||33.35||Cepheus|
|2019 Feb 28||21h 04m 18s||+84° 42’ 45”||33.35||Cepheus|
|2019 Mar 01||21h 07m 04s||+84° 44’ 48”||33.36||Cepheus|
Distance of Comet C/2015 D4 (Borisov) from Earth
The following chart shows the distance of Comet C/2015 D4 (Borisov) 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 D4 (Borisov) is also available as a real time updated value in the Live Position and Data Tracker.
Light Curve of Comet C/2015 D4 (Borisov)
The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2015 D4 (Borisov), 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.
Comet C/2015 D4 (Borisov) Orbital Elements
The following table lists the orbital elements of Comet C/2015 D4 (Borisov) at epoch 29 March 2015 00:00 UTC (JD: 2457111.5). Source: JPL Small-Body Database
|Perihelion distance||q||0.86167786 AU
|Date of perihelion transit||Tp||2014-Oct-28 05:42:03
|Next perihelion transit||2714-Sep-25 07:50
|Argument of perihelion||peri||314.69429020156°|
|Longitude of the ascending node||node||305.81031552317°|
|Closest approach to Earth*||2014-Oct-22|
|Distance of closest approach*||1.39050711 AU
* 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.