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Comet C/2017 E1 (Borisov)

Available Resources

Comet C/2017 E1 (Borisov) Sky Charts and Coordinates

This is a simplified sky chart, showing where Comet C/2017 E1 (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/2017 E1 (Borisov) in Aquarius on March, 25 2017
High Precision Live Sky Chart
21h 18m 03s
-07° 06’ 38”
 = 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/2017 E1 (Borisov) Rise and Set Times

Today's Comet C/2017 E1 (Borisov) rise, transit and set times from Greenwich, United Kingdom [change]. All times are relative to the local timezone Europe/London.

Azimuth: 97.1°
Max altitude: 31.4°
Azimuth: 262.9°

Comet C/2017 E1 (Borisov) Orbit Diagram

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2017 E1 (Borisov) with respect of the Sun and the orbits of the major planets. The position of Comet C/2017 E1 (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/2017 E1 (Borisov)
View Comet C/2017 E1 (Borisov) in the 3D Solar System Simulator

Comet C/2017 E1 (Borisov) Ephemeris

The following table lists the ephemerides of Comet C/2017 E1 (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/2017 E1 (Borisov) in our Online Planetarium at the chosen date.

Date MagnitudeMag Right AscensionR.A. DeclinationDec. Constellation
2017 Mar 18 15.77 20h 38m 57s -08° 26’ 39” Aquarius
2017 Mar 19 15.74 20h 44m 35s -08° 16’ 01” Aquarius
2017 Mar 20 15.71 20h 50m 12s -08° 05’ 07” Aquarius
2017 Mar 21 15.68 20h 55m 47s -07° 53’ 56” Aquarius
2017 Mar 22 15.65 21h 01m 23s -07° 42’ 29” Aquarius
2017 Mar 23 15.63 21h 06m 57s -07° 30’ 46” Aquarius
2017 Mar 24 15.60 21h 12m 30s -07° 18’ 48” Aquarius
2017 Mar 25 15.58 21h 18m 03s -07° 06’ 38” Aquarius
2017 Mar 26 15.56 21h 23m 35s -06° 54’ 14” Aquarius
2017 Mar 27 15.54 21h 29m 04s -06° 41’ 38” Aquarius
2017 Mar 28 15.52 21h 34m 33s -06° 28’ 50” Aquarius
2017 Mar 29 15.51 21h 40m 00s -06° 15’ 52” Aquarius
2017 Mar 30 15.50 21h 45m 27s -06° 02’ 45” Aquarius
2017 Mar 31 15.48 21h 50m 49s -05° 49’ 30” Aquarius

Distance of Comet C/2017 E1 (Borisov) from Earth

The following chart shows the distance of Comet C/2017 E1 (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/2017 E1 (Borisov) is also available as a real time updated value in the Live Position and Data Tracker.

Distance of Comet C/2017 E1 (Borisov) from Earth between January 2014 and January 2035

Light Curve of Comet C/2017 E1 (Borisov)

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2017 E1 (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/2017 E1 (Borisov) between January 2014 and January 2035

Comet C/2017 E1 (Borisov) Orbital Elements

The following table lists the orbital elements of Comet C/2017 E1 (Borisov) at epoch 02 March 2017 00:00 UTC (JD: 2457815.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00000000
Orbit inclination i 14.55340528°
Perihelion distance q 0.89935347 AU
134,541,364 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2017-Apr-10 05:35:10
2,457,853.7328 JD
Argument of perihelion peri 152.64498740168°
Longitude of the ascending node node 142.71127052268°
Mean anomaly M °
Mean motion n 0.00000000°/day
Closest approach to Earth* 2017-Mar-18
Distance of closest approach* 1.32192320 AU
197,756,896 km

* NOTE: values for the closest approach are computed for the time interval between 2014-Jan-01 and 2035-Jan-01, with a sampling interval of 1 day.