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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:58 
Transit: 13:05 
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Comet 157P/Tritton

Below the horizon.  Rise: 19:35 | Tran: 22:39 | Set: 1:46
Alt: -21.83°   Az: 250.52°   Direction: West-South-West

Comet 157P/Tritton is in the constellation of Ophiuchus, at a distance of 566,038,114.0 kilometers from Earth. The current Right Ascension is 17h 03m 44s and the Declination is -28° 55’ 42” (apparent coordinates). The estimated magnitude of comet 157P/Tritton, computed using JPL Horizons's data, is 25.28.

Finder Charts

The sky charts below show, at different resolutions, the position of comet 157P/Tritton in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of comet 157P/Tritton in the constellation of Ophiuchus on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of comet 157P/Tritton in the constellation of Ophiuchus 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 157P/Tritton 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.

157P/Tritton
RA: 17h 02m 07s
Dec: -28° 53’ 36”
Simplified high-resolution deep sky chart showing the current position of comet 157P/Tritton. Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

17h 03m 44s
-28° 55’ 42”
05h 57m 11s
23h 00m 55s

J2000

17h 02m 07s
-28° 53’ 36”

Additional Information

Ophiuchus
n/a
n/a
n/a
n/a
25.28

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 157P/Tritton from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 118.9°
Max altitude: 9.6°
Azimuth: 241.1°

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 157P/Tritton from Earth is currently 566,038,114.0 kilometers, equivalent to 3.7837310876 Astronomical Units. Light takes 31m 28.100s to travel from comet 157P/Tritton and arrive to us.

566,038,114.0
3.7837310876
31m 28.100s

The following graph shows the distance of comet 157P/Tritton 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 157P/Tritton 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 157P/Tritton 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 157P/Tritton to Earth will happen on Sunday 14 December 2092 at a distance of 0.559012 Astronomical Units, or 83,626,991 kilometers:

Sunday 14 December 2092
83,626,991
0.559012

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 157P/Tritton, 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 157P/Tritton as a function of time

15 Days Ephemeris

The following table lists the ephemerides of comet 157P/Tritton 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
Jul 05 2025 17h 08m 18s -29° 13’ 56” 25.25 Ophiuchus
Jul 06 2025 17h 07m 37s -29° 11’ 26” 25.26 Ophiuchus
Jul 07 2025 17h 06m 57s -29° 08’ 55” 25.26 Ophiuchus
Jul 08 2025 17h 06m 18s -29° 06’ 23” 25.27 Ophiuchus
Jul 09 2025 17h 05m 40s -29° 03’ 50” 25.27 Ophiuchus
Jul 10 2025 17h 05m 02s -29° 01’ 16” 25.27 Ophiuchus
Jul 11 2025 17h 04m 25s -28° 58’ 42” 25.28 Ophiuchus
Jul 12 2025 17h 03m 49s -28° 56’ 06” 25.28 Ophiuchus
Jul 13 2025 17h 03m 14s -28° 53’ 30” 25.29 Ophiuchus
Jul 14 2025 17h 02m 40s -28° 50’ 54” 25.29 Ophiuchus
Jul 15 2025 17h 02m 06s -28° 48’ 19” 25.30 Ophiuchus
Jul 16 2025 17h 01m 33s -28° 45’ 42” 25.30 Ophiuchus
Jul 17 2025 17h 01m 02s -28° 43’ 05” 25.31 Ophiuchus
Jul 18 2025 17h 00m 31s -28° 40’ 28” 25.31 Ophiuchus

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