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Comet C/2019 T3 (ATLAS)

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Comet C/2019 T3 (ATLAS) Position

Comet C/2019 T3 (ATLAS) is currently in the constellation of Cassiopeia. The current Right Ascension is 00h 58m 45s and the Declination is +76° 26’ 43”.

00h 58m 45s
+76° 26’ 43”

Simplified sky chart showing where Comet C/2019 T3 (ATLAS) is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)

Map showing Comet C/2019 T3 (ATLAS) in Cassiopeia on January, 19 2020
Field of view: 60x30 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart showing where Comet C/2019 T3 (ATLAS) is right now (view fullscreen)

C/2019 T3 (ATLAS)
RA: 00h 58m 45s
Dec: +76° 26’ 43”
Deep sky finder chart for Comet C/2019 T3 (ATLAS)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2019 T3 (ATLAS)?, a page that provides all the information needed to find Comet C/2019 T3 (ATLAS) in the sky and additional links to sky charts.

Comet C/2019 T3 (ATLAS) Distance

The distance of Comet C/2019 T3 (ATLAS) from Earth is currently 935,156,275 kilometers, equivalent to 6.251134 Astronomical Units. Light takes 51 minutes and 59.3456 seconds to travel from Comet C/2019 T3 (ATLAS) and arrive to us.

51 minutes and 59.3456 seconds

The following chart shows the distance of Comet C/2019 T3 (ATLAS) 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.

Distance of Comet C/2019 T3 (ATLAS) from Earth between January 2013 and December 2100

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 T3 (ATLAS) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2019 T3 (ATLAS) to Earth

Between January 2013 and December 2100 the closest approach of Comet C/2019 T3 (ATLAS) to Earth happens on Sat Sep 11 2021 at a distance of 5.37057447 Astronomical Units, or 803,426,507 kilometers:

Sat Sep 11 2021

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Comet C/2019 T3 (ATLAS) brightness

The current visual magnitude of Comet C/2019 T3 (ATLAS) is 18.57.


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 behavior 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.

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet C/2019 T3 (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/2019 T3 (ATLAS) between January 2013 and December 2100

Comet C/2019 T3 (ATLAS) rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Comet C/2019 T3 (ATLAS) is circumpolar and transits at 17:04 UTC (altitude: 65.0°)

The rise and set times are defined as the time at which the upper limb of Comet C/2019 T3 (ATLAS) touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Comet C/2019 T3 (ATLAS) Orbital Elements

The following table lists the orbital elements of Comet C/2019 T3 (ATLAS) at epoch 21 October 2019 00:00 UTC (JD: 2458778.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99983617
Orbit inclination i 121.86111212°
Perihelion distance q 5.94659137 AU
889,597,409 km
Aphelion distance Q 72,589.68270987 AU
10,859,261,989,963 km
Semi-major axis a 36,297.81465062 AU
5,430,075,793,686 km
Orbital period period 6,915,584.9500 years
2,525,917,401.4881 days
Date of perihelion transit Tp 2021-Mar-02 07:49:17
2,459,275.8259 JD
Argument of perihelion peri 112.24459687243°
Longitude of the ascending node node 139.50853585201°
Mean anomaly M 359.99992911988°
Mean motion n 0.00000014°/day

Visualization of Comet C/2019 T3 (ATLAS) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2019 T3 (ATLAS) with respect of the Sun and the orbits of the major planets. The position of Comet C/2019 T3 (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/2019 T3 (ATLAS)
View Comet C/2019 T3 (ATLAS) in the 3D Solar System Simulator

Comet C/2019 T3 (ATLAS) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2019 T3 (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/2019 T3 (ATLAS) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Jan 12 01h 04m 55s +77° 53’ 43” 18.57 Cepheus
2020 Jan 13 01h 03m 50s +77° 41’ 32” 18.57 Cepheus
2020 Jan 14 01h 02m 49s +77° 29’ 26” 18.57 Cassiopeia
2020 Jan 15 01h 01m 54s +77° 17’ 21” 18.57 Cassiopeia
2020 Jan 16 01h 01m 03s +77° 05’ 18” 18.57 Cassiopeia
2020 Jan 17 01h 00m 15s +76° 53’ 20” 18.57 Cassiopeia
2020 Jan 18 00h 59m 33s +76° 41’ 25” 18.57 Cassiopeia
2020 Jan 19 00h 58m 54s +76° 29’ 33” 18.57 Cassiopeia
2020 Jan 20 00h 58m 18s +76° 17’ 45” 18.57 Cassiopeia
2020 Jan 21 00h 57m 47s +76° 06’ 02” 18.57 Cassiopeia
2020 Jan 22 00h 57m 19s +75° 54’ 24” 18.57 Cassiopeia
2020 Jan 23 00h 56m 53s +75° 42’ 51” 18.57 Cassiopeia
2020 Jan 24 00h 56m 31s +75° 31’ 22” 18.57 Cassiopeia
2020 Jan 25 00h 56m 12s +75° 19’ 59” 18.57 Cassiopeia