Comet C/2019 Q4 (Borisov)
Comet C/2019 Q4 (Borisov) is currently in the constellation of Ara, at a distance of 4,705,212,716 kilometers from Earth.
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The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted 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.
Today's rise, transit and set times of Comet C/2019 Q4 (Borisov) from Greenwich, United Kingdom (all times relative to the local timezone Europe/London):
Today Comet C/2019 Q4 (Borisov) is not visible from Greenwich, United Kingdom
- C/2019 Q4 (Borisov) is below the horizon from Greenwich, United Kingdom.
- Given its current magnitude, C/2019 Q4 (Borisov) is visible only through long exposure photography.
- Go to interactive sky chart
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Comet C/2019 Q4 (Borisov) Position and Finder Charts
Field of view: 10x6 degrees
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Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet C/2019 Q4 (Borisov) is right now. Click on the image to see a more detailed fullscreen tracker view.
Also check out Where is Comet C/2019 Q4 (Borisov)?, a page that provides all the information needed to find Comet C/2019 Q4 (Borisov) in the sky and additional links to sky charts.
Comet C/2019 Q4 (Borisov) Distance from Earth
The distance of Comet C/2019 Q4 (Borisov) from Earth is currently 4,705,212,716 kilometers, equivalent to 31.452404 Astronomical Units. Light takes 4 hours, 21 minutes and 34.9002 seconds to travel from Comet C/2019 Q4 (Borisov) and arrive to us.
The following chart shows the distance of Comet C/2019 Q4 (Borisov) from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.
The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of C/2019 Q4 (Borisov) from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest Approach of Comet C/2019 Q4 (Borisov) to Earth
Between 1 January 2013 and 30 December 2100, the closest approach of Comet C/2019 Q4 (Borisov) to Earth happens on Sat Dec 28 2019 at a distance of 1.936750 Astronomical Units, or 289,733,622 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Comet C/2019 Q4 (Borisov) Brightness and Light Curve
The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2019 Q4 (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/2019 Q4 (Borisov) Orbital Elements
The following table lists the orbital elements of Comet C/2019 Q4 (Borisov) at epoch 31 July 2020 00:00 UTC (JD: 2459062.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 3.35621510 |
| Orbit inclination | i | 44.05257069° |
| Perihelion distance | q | 2.00658189 AU 300,180,379 km |
| Aphelion distance | Q | n.a. |
| Semi-major axis | a | n.a. |
| Orbital period | period | n.a. |
| Date of perihelion transit | Tp | 2019-Dec-08 13:04:54 2,458,826.0451 JD |
| Argument of perihelion | peri | 209.12367864° |
| Longitude of the ascending node | node | 308.14872628954° |
| Mean anomaly | M | 296.54425572941° |
| Mean motion | n | 1.25412592°/day |
Visualization of Comet C/2019 Q4 (Borisov) Orbit
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2019 Q4 (Borisov) with respect of the Sun and the orbits of the major planets. The position of Comet C/2019 Q4 (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!
View Comet C/2019 Q4 (Borisov) in the 3D Solar System Simulator
Comet C/2019 Q4 (Borisov) 15 Days Ephemeris
The following table lists the ephemerides of Comet C/2019 Q4 (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/2019 Q4 (Borisov) in our Online Planetarium at the chosen date.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2024 May 10 | 18h 03m 24s | -55° 28’ 44” | 27.96 | Ara |
| 2024 May 11 | 18h 03m 15s | -55° 29’ 17” | 27.96 | Ara |
| 2024 May 12 | 18h 03m 05s | -55° 29’ 48” | 27.96 | Ara |
| 2024 May 13 | 18h 02m 56s | -55° 30’ 19” | 27.96 | Ara |
| 2024 May 14 | 18h 02m 45s | -55° 30’ 48” | 27.97 | Ara |
| 2024 May 15 | 18h 02m 36s | -55° 31’ 18” | 27.97 | Ara |
| 2024 May 16 | 18h 02m 26s | -55° 31’ 45” | 27.97 | Ara |
| 2024 May 17 | 18h 02m 17s | -55° 32’ 12” | 27.97 | Ara |
| 2024 May 18 | 18h 02m 07s | -55° 32’ 39” | 27.97 | Ara |
| 2024 May 19 | 18h 01m 56s | -55° 33’ 05” | 27.97 | Ara |
| 2024 May 20 | 18h 01m 45s | -55° 33’ 29” | 27.98 | Ara |
| 2024 May 21 | 18h 01m 36s | -55° 33’ 52” | 27.98 | Ara |
| 2024 May 22 | 18h 01m 24s | -55° 34’ 15” | 27.98 | Ara |
| 2024 May 23 | 18h 01m 14s | -55° 34’ 37” | 27.98 | Ara |