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Comet 157P/Tritton

Below the horizon.  Rise: 4:50 | Tran: 7:46 | Set: 10:42
Alt: -52.28°   Az: 71.16°   Direction: East-North-East

Comet 157P/Tritton is in the constellation of Ophiuchus, at a distance of 742,864,027.0 kilometers from Earth. The current Right Ascension is 17h 40m 43s and the Declination is -29° 43’ 28” (apparent coordinates). The predicted magnitude of Comet 157P/Tritton is 25.84 (data provided by JPL Horizons).

Finder Charts

Map showing Comet 157P/Tritton in Ophiuchus on February, 18 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Comet 157P/Tritton in Ophiuchus on February, 18 2025. Field of view: 15x9 degrees. View in interactive sky chart

High precision deep sky finder chart, 60 arcmin wide, showing where Comet 157P/Tritton is right now. Click on the image to see a more detailed fullscreen tracker view.

157P/Tritton
RA: 17h 39m 07s
Dec: -29° 42’ 44”
Deep sky finder chart for Comet 157P/Tritton. Field of view: 60x40 arcmins. View in deep sky object tracker

Also check out Where is Comet 157P/Tritton?, a page that provides all the information needed to find Comet 157P/Tritton in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

17h 40m 43s
-29° 43’ 28”
14h 47m 16s
08h 28m 00s

J2000

17h 39m 07s
-29° 42’ 44”

Additional Information

Ophiuchus
n/a
n/a
n/a
n/a
25.84

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

Today's rise, transit and set times of Comet 157P/Tritton from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 119.7°
Max altitude: 8.8°
Azimuth: 240.3°
  • 157P/Tritton is below the horizon from Greenwich, UK.
  • Given its current magnitude, 157P/Tritton is visible only through long exposure photography.
  • Go to interactive sky chart

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 742,864,027.0 kilometers, equivalent to 4.9657393085 Astronomical Units. Light takes 41m 17.928s to travel from Comet 157P/Tritton and arrive to us.

742,864,027.0
4.9657393085
41m 17.928s

The following chart shows the distance of Comet 157P/Tritton 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.

Chart of the distance of Comet 157P/Tritton from Earth in Astronomical Units (au)

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 157P/Tritton from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach

Between 1 January 2000 and 31 December 2099, the closest approach of Comet 157P/Tritton to Earth happens on Sun Dec 14 2092 at a distance of 0.559012 Astronomical Units, or 83,626,991 kilometers:

Sun Dec 14 2092
83,626,991
0.559012

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

Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 157P/Tritton, 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.

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
2025 Feb 11 17h 34m 59s -29° 37’ 36” 25.88 Ophiuchus
2025 Feb 12 17h 35m 44s -29° 38’ 21” 25.87 Ophiuchus
2025 Feb 13 17h 36m 29s -29° 39’ 07” 25.87 Ophiuchus
2025 Feb 14 17h 37m 13s -29° 39’ 52” 25.87 Ophiuchus
2025 Feb 15 17h 37m 57s -29° 40’ 36” 25.86 Ophiuchus
2025 Feb 16 17h 38m 40s -29° 41’ 20” 25.85 Ophiuchus
2025 Feb 17 17h 39m 23s -29° 42’ 03” 25.85 Ophiuchus
2025 Feb 18 17h 40m 05s -29° 42’ 47” 25.84 Ophiuchus
2025 Feb 19 17h 40m 46s -29° 43’ 30” 25.84 Ophiuchus
2025 Feb 20 17h 41m 27s -29° 44’ 13” 25.83 Ophiuchus
2025 Feb 21 17h 42m 07s -29° 44’ 54” 25.83 Ophiuchus
2025 Feb 22 17h 42m 47s -29° 45’ 37” 25.82 Ophiuchus
2025 Feb 23 17h 43m 26s -29° 46’ 18” 25.82 Ophiuchus
2025 Feb 24 17h 44m 04s -29° 46’ 59” 25.81 Ophiuchus

Additional Resources