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Comet C/2016 R3 (Borisov)

Available Resources

Comet C/2016 R3 (Borisov) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2016 R3 (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.

Comet C/2016 R3 (Borisov) in Phoenix on March, 25 2019
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 26m 08s
-44° 41’ 18”

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/2016 R3 (Borisov) Rise and Set Times

Comet C/2016 R3 (Borisov) is currently not visible from Greenwich, United Kingdom [change]

Comet C/2016 R3 (Borisov) Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2016 R3 (Borisov) with respect of the Sun and the orbits of the major planets. The position of Comet C/2016 R3 (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!

Orbit Diagram of Comet C/2016 R3 (Borisov)
View Comet C/2016 R3 (Borisov) in the 3D Solar System Simulator

Comet C/2016 R3 (Borisov) Ephemeris

The following table lists the ephemerides of Comet C/2016 R3 (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/2016 R3 (Borisov) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2019 Mar 18 01h 22m 18s -45° 05’ 03” 39.88 Phoenix
2019 Mar 19 01h 22m 49s -45° 01’ 40” 39.89 Phoenix
2019 Mar 20 01h 23m 20s -44° 58’ 20” 39.89 Phoenix
2019 Mar 21 01h 23m 50s -44° 55’ 05” 39.90 Phoenix
2019 Mar 22 01h 24m 20s -44° 51’ 54” 39.91 Phoenix
2019 Mar 23 01h 24m 51s -44° 48’ 44” 39.92 Phoenix
2019 Mar 24 01h 25m 23s -44° 45’ 41” 39.92 Phoenix
2019 Mar 25 01h 25m 54s -44° 42’ 39” 39.93 Phoenix
2019 Mar 26 01h 26m 25s -44° 39’ 42” 39.94 Phoenix
2019 Mar 27 01h 26m 56s -44° 36’ 50” 39.94 Phoenix
2019 Mar 28 01h 27m 27s -44° 34’ 00” 39.95 Phoenix
2019 Mar 29 01h 27m 59s -44° 31’ 14” 39.96 Phoenix
2019 Mar 30 01h 28m 30s -44° 28’ 33” 39.96 Phoenix
2019 Mar 31 01h 29m 02s -44° 25’ 55” 39.97 Phoenix

Distance of Comet C/2016 R3 (Borisov) from Earth

The following chart shows the distance of Comet C/2016 R3 (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/2016 R3 (Borisov) is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet C/2016 R3 (Borisov) from Earth between January 2013 and December 2100

Light Curve of Comet C/2016 R3 (Borisov)

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2016 R3 (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.

Predicted magnitude of Comet C/2016 R3 (Borisov) between January 2013 and December 2100

Comet C/2016 R3 (Borisov) Orbital Elements

The following table lists the orbital elements of Comet C/2016 R3 (Borisov) at epoch 14 September 2016 00:00 UTC (JD: 2457646.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99552529
Orbit inclination i 53.06733479°
Perihelion distance q 0.44679527 AU
66,839,622 km
Aphelion distance Q 199.25126563 AU
29,807,565,133 km
Semi-major axis a 99.84903045 AU
14,937,202,377 km
Orbital period period 997.7600 years
364,430.0706 days
Date of perihelion transit Tp 2016-Oct-10 23:58:41
2,457,672.4991 JD
Next perihelion transit 3014-Jul-22 01:40
2,822,102.5697 JD
Argument of perihelion peri 118.13390819768°
Longitude of the ascending node node 78.669565850392°
Mean anomaly M 359.97431695243°
Mean motion n 0.00098784°/day
Closest approach to Earth* 2016-Oct-02
Distance of closest approach* 1.32126729 AU
197,658,774 km

* NOTE: values for the closest approach are computed for the time interval between 2013-Jan-01 and 2100-Dec-31, with a sampling interval of 1 day.