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Comet 157P/Tritton

Comet 157P/Tritton is currently in the constellation of Capricornus. The current Right Ascension of Comet 157P/Tritton is 21h 33m 34s and the Declination is -09° 50’ 53” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 157P/Tritton is 26.44 (JPL).

Summary of key facts about Comet 157P/Tritton [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

21h 33m 34s
-09° 50’ 53”

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Additional information about Comet 157P/Tritton available on TheSkyLive:

Available Resources

Comet 157P/Tritton Position and Finder Charts

Below we provide Comet 157P/Tritton finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Comet 157P/Tritton in Capricornus on May, 07 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 157P/Tritton in Capricornus on May, 07 2021
Field of view: 10x6 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, 60 arcmin wide, showing where Comet 157P/Tritton is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 21h 33m 34s
Dec: -09° 50’ 53”
Deep sky finder chart for Comet 157P/Tritton
Field of view: 60x40 arcmins
View fullscreen

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.

Comet 157P/Tritton Distance from Earth

The distance of Comet 157P/Tritton from Earth is currently 593,487,732 kilometers, equivalent to 3.967220 Astronomical Units. Light takes 32 minutes and 59.6620 seconds to travel from Comet 157P/Tritton and arrive to us.

32 minutes and 59.6620 seconds

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.

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

Closest approach of Comet 157P/Tritton to Earth

Between January 2013 and December 2100, the closest approach of Comet 157P/Tritton to Earth happens on Sun Dec 22 2075 at a distance of 0.429463 Astronomical Units, or 64,246,768 kilometers:

Sun Dec 22 2075

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

Comet 157P/Tritton brightness

The current visual magnitude of Comet 157P/Tritton is 26.44.


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 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.

Predicted magnitude of Comet 157P/Tritton between January 2013 and December 2100

Comet 157P/Tritton rise and set times

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

Today's Comet 157P/Tritton rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 99.9°
Max altitude: 28.6°
Azimuth: 260.1°

The rise and set times are defined as the time at which the upper limb of Comet 157P/Tritton 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 157P/Tritton Orbital Elements

The following table lists the orbital elements of Comet 157P/Tritton at epoch 25 June 2009 00:00 UTC (JD: 2455008.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.60120741
Orbit inclination i 7.27825004°
Perihelion distance q 1.36058152 AU
203,540,098 km
Aphelion distance Q 5.46292292 AU
817,241,639 km
Semi-major axis a 3.41175222 AU
510,390,868 km
Orbital period period 6.3000 years
2,301.7844 days
Date of perihelion transit Tp 2010-Feb-20 11:38:43
2,455,247.9852 JD
Next perihelion transit 2016-Jun-10 06:28
2,457,549.7697 JD
Argument of perihelion peri 148.69807985558°
Longitude of the ascending node node 300.11696286563°
Mean anomaly M 322.5444155189°
Mean motion n 0.15640040°/day

Visualization of Comet 157P/Tritton Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 157P/Tritton with respect of the Sun and the orbits of the major planets. The position of Comet 157P/Tritton 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 157P/Tritton
View Comet 157P/Tritton in the 3D Solar System Simulator

Comet 157P/Tritton 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. Click on each row of the table to locate Comet 157P/Tritton in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Apr 30 21h 29m 30s -10° 28’ 36” 26.59 Capricornus
2021 May 01 21h 30m 03s -10° 23’ 45” 26.57 Capricornus
2021 May 02 21h 30m 36s -10° 18’ 56” 26.56 Capricornus
2021 May 03 21h 31m 08s -10° 14’ 08” 26.54 Capricornus
2021 May 04 21h 31m 38s -10° 09’ 23” 26.52 Capricornus
2021 May 05 21h 32m 08s -10° 04’ 37” 26.50 Capricornus
2021 May 06 21h 32m 39s -09° 59’ 53” 26.48 Capricornus
2021 May 07 21h 33m 07s -09° 55’ 13” 26.46 Capricornus
2021 May 08 21h 33m 35s -09° 50’ 32” 26.44 Capricornus
2021 May 09 21h 34m 04s -09° 45’ 55” 26.42 Capricornus
2021 May 10 21h 34m 31s -09° 41’ 17” 26.40 Capricornus
2021 May 11 21h 34m 56s -09° 36’ 43” 26.38 Capricornus
2021 May 12 21h 35m 22s -09° 32’ 11” 26.36 Capricornus
2021 May 13 21h 35m 48s -09° 27’ 41” 26.34 Capricornus