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public  Villmar, Alemania Villmar, Alemania  ⓘ
TimezoneEurope/Berlin
Sunrise: 5:26 
Transit: 13:32 
Sunset: 21:37
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Comets » 

Comet C/2019 T4 (ATLAS)

Above the horizon.  Rise: 15:01 | Tran: 1:01 | Set: 11:06
Alt: 45.43°   Az: 274.82°   Direction: West

Comet C/2019 T4 (ATLAS) is in the constellation of Lyra, at a distance of 1,328,521,474.0 kilometers from Earth. The current Right Ascension is 18h 39m 26s and the Declination is +35° 54’ 09” (apparent coordinates). The estimated magnitude of comet C/2019 T4 (ATLAS), computed using JPL Horizons's data, is 19.14).

Finder Charts

The sky charts below show, at different resolutions, the position of comet C/2019 T4 (ATLAS) in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of comet C/2019 T4 (ATLAS) in the constellation of Lyra on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of comet C/2019 T4 (ATLAS) in the constellation of Lyra on F, d Y. Field of view: 15x9 degrees. View in interactive star map.

The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of comet C/2019 T4 (ATLAS) against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.

C/2019 T4 (ATLAS)
RA: 18h 38m 32s
Dec: +35° 52’ 42”
Simplified high-resolution deep sky chart showing the current position of comet C/2019 T4 (ATLAS). Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

18h 39m 26s
+35° 54’ 09”
03h 58m 47s
22h 38m 13s

J2000

18h 38m 32s
+35° 52’ 42”

Additional Information

Lyra
n/a
n/a
n/a
n/a
19.14

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.

Rise and Set Times

The following table lists today's rise, transit and set times of comet C/2019 T4 (ATLAS) from Villmar, Alemania (all times relative to the local timezone Europe/Berlin):

Azimuth: 54.1°
Max altitude: 75.5°
Azimuth: 305.9°

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Distance from Earth

The distance of comet C/2019 T4 (ATLAS) from Earth is currently 1,328,521,474.0 kilometers, equivalent to 8.8806175368 Astronomical Units. Light takes 1h 13m 51.471s to travel from comet C/2019 T4 (ATLAS) and arrive to us.

1,328,521,474.0
8.8806175368
1h 13m 51.471s

The following graph shows the distance of comet C/2019 T4 (ATLAS) from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.

Chart of the distance of comet C/2019 T4 (ATLAS) from Earth in Astronomical Units (au)
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).

The value of the distance of C/2019 T4 (ATLAS) from Earth is also available as a real time updated value in the live position tracker.

Closest Approach to Earth

In the period between January 1, 2000 and December 31, 2099, the closest approach of comet C/2019 T4 (ATLAS) to Earth happened on Tuesday 5 April 2022 at a distance of 3.330828 Astronomical Units, or 498,284,704 kilometers:

Tuesday 5 April 2022
498,284,704
3.330828

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

Light Curve

The following chart shows the light curve of comet C/2019 T4 (ATLAS), i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.

Chart of the magnitude of comet C/2019 T4 (ATLAS) as a function of time

Orbital Elements

The following table lists the orbital elements of comet C/2019 T4 (ATLAS) at epoch February, 12 2023 00:00 UTC (JD: 2459988.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.99562179
Orbit inclination i 53.63216393°
Perihelion distance q 4.24214992 AU
634,616,597 km
Aphelion distance Q 1,933.60512533 AU
289,263,210,104 km
Semi-major axis a 968.92363763 AU
144,948,913,350 km
Orbital period period 30,160.7772 years
11,016,223.8785 days
Date of perihelion transit Tp June 8, 2022
2,459,739.4899 JD
Next perihelion transit October 31, 32183
13,475,963.3684 JD
Argument of perihelion peri 351.17755682489°
Longitude of the ascending node node 199.93925252099°
Mean anomaly M 0.0081374197204644°
Mean motion n 0.00003268°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of comet C/2019 T4 (ATLAS) relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.

15 Days Ephemeris

The following table lists the ephemerides of comet C/2019 T4 (ATLAS) computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
Jun 30 2025 18h 42m 05s +35° 56’ 15” 19.11 Lyra
Jul 01 2025 18h 41m 42s +35° 56’ 17” 19.11 Lyra
Jul 02 2025 18h 41m 20s +35° 56’ 11” 19.12 Lyra
Jul 03 2025 18h 40m 57s +35° 55’ 59” 19.12 Lyra
Jul 04 2025 18h 40m 35s +35° 55’ 42” 19.13 Lyra
Jul 05 2025 18h 40m 13s +35° 55’ 18” 19.13 Lyra
Jul 06 2025 18h 39m 51s +35° 54’ 50” 19.13 Lyra
Jul 07 2025 18h 39m 29s +35° 54’ 14” 19.14 Lyra
Jul 08 2025 18h 39m 07s +35° 53’ 33” 19.14 Lyra
Jul 09 2025 18h 38m 45s +35° 52’ 47” 19.15 Lyra
Jul 10 2025 18h 38m 23s +35° 51’ 54” 19.15 Lyra
Jul 11 2025 18h 38m 01s +35° 50’ 57” 19.16 Lyra
Jul 12 2025 18h 37m 40s +35° 49’ 53” 19.16 Lyra
Jul 13 2025 18h 37m 19s +35° 48’ 43” 19.16 Lyra

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