Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

Comet C/2013 US10 (CATALINA)

Comet C/2013 US10 (CATALINA) is currently in the constellation of Andromeda. The current Right Ascension of Comet C/2013 US10 (CATALINA) is 02h 35m 14s and the Declination is +39° 47’ 09” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet C/2013 US10 (CATALINA) is 22.27 (JPL).

Summary of key facts about Comet C/2013 US10 (CATALINA) [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]:

02h 35m 14s
+39° 47’ 09”
  • C/2013 US10 (CATALINA) is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South direction at an altitude of 78° above the horizon.
  • Given its current magnitude, C/2013 US10 (CATALINA) is visible only through long exposure photography.
  • See also C/2013 US10 (CATALINA) rise and set times.
  • 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.

Additional information about Comet C/2013 US10 (CATALINA) available on TheSkyLive:

Available Resources

Comet C/2013 US10 (CATALINA) Position and Finder Charts

Below we provide Comet C/2013 US10 (CATALINA) 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 C/2013 US10 (CATALINA) in Andromeda on October, 23 2020
Field of view: 50x30 degrees
View fullscreen
Map showing Comet C/2013 US10 (CATALINA) in Andromeda on October, 23 2020
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 C/2013 US10 (CATALINA) is right now. Click on the image to see a more detailed fullscreen tracker view.

C/2013 US10 (CATALINA)
RA: 02h 35m 14s
Dec: +39° 47’ 09”
Deep sky finder chart for Comet C/2013 US10 (CATALINA)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet C/2013 US10 (CATALINA)?, a page that provides all the information needed to find Comet C/2013 US10 (CATALINA) in the sky and additional links to sky charts.

Comet C/2013 US10 (CATALINA) Distance from Earth

The distance of Comet C/2013 US10 (CATALINA) from Earth is currently 2,193,903,312 kilometers, equivalent to 14.665338 Astronomical Units. Light takes 2 hours, 1 minutes and 58.0737 seconds to travel from Comet C/2013 US10 (CATALINA) and arrive to us.

2 hours, 1 minutes and 58.0737 seconds

The following chart shows the distance of Comet C/2013 US10 (CATALINA) 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/2013 US10 (CATALINA) 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/2013 US10 (CATALINA) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet C/2013 US10 (CATALINA) to Earth

Between January 2013 and December 2100, the closest approach of Comet C/2013 US10 (CATALINA) to Earth happens on Sun Jan 17 2016 at a distance of 0.724726 Astronomical Units, or 108,417,539 kilometers:

Sun Jan 17 2016

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

Comet C/2013 US10 (CATALINA) brightness

The current visual magnitude of Comet C/2013 US10 (CATALINA) is 22.27.


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/2013 US10 (CATALINA), 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/2013 US10 (CATALINA) between January 2013 and December 2100

Comet C/2013 US10 (CATALINA) rise and set times

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

Comet C/2013 US10 (CATALINA) is circumpolar and transits at 00:27 UTC (altitude: 78.3°)

The rise and set times are defined as the time at which the upper limb of Comet C/2013 US10 (CATALINA) 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/2013 US10 (CATALINA) Orbital Elements

The following table lists the orbital elements of Comet C/2013 US10 (CATALINA) at epoch 22 November 2015 00:00 UTC (JD: 2457349.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 1.00028083
Orbit inclination i 148.87829064°
Perihelion distance q 0.82296960 AU
123,114,500 km
Aphelion distance Q n.a.
Semi-major axis a n.a.
Orbital period period n.a.
Date of perihelion transit Tp 2015-Nov-15 17:19:10
2,457,342.2216 JD
Argument of perihelion peri 340.35874724556°
Longitude of the ascending node node 186.14455804211°
Mean anomaly M 4.5220645316578E-5°
Mean motion n 0.00000621°/day

Visualization of Comet C/2013 US10 (CATALINA) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet C/2013 US10 (CATALINA) with respect of the Sun and the orbits of the major planets. The position of Comet C/2013 US10 (CATALINA) 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/2013 US10 (CATALINA)
View Comet C/2013 US10 (CATALINA) in the 3D Solar System Simulator

Comet C/2013 US10 (CATALINA) 15 Days Ephemeris

The following table lists the ephemerides of Comet C/2013 US10 (CATALINA) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet C/2013 US10 (CATALINA) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2020 Oct 16 02h 37m 41s +39° 53’ 49” 22.26 Andromeda
2020 Oct 17 02h 37m 21s +39° 52’ 59” 22.26 Andromeda
2020 Oct 18 02h 37m 00s +39° 52’ 08” 22.26 Andromeda
2020 Oct 19 02h 36m 38s +39° 51’ 12” 22.27 Andromeda
2020 Oct 20 02h 36m 18s +39° 50’ 16” 22.27 Andromeda
2020 Oct 21 02h 35m 57s +39° 49’ 17” 22.27 Andromeda
2020 Oct 22 02h 35m 35s +39° 48’ 15” 22.27 Andromeda
2020 Oct 23 02h 35m 14s +39° 47’ 11” 22.27 Andromeda
2020 Oct 24 02h 34m 54s +39° 46’ 05” 22.27 Andromeda
2020 Oct 25 02h 34m 32s +39° 44’ 57” 22.27 Andromeda
2020 Oct 26 02h 34m 11s +39° 43’ 47” 22.28 Andromeda
2020 Oct 27 02h 33m 50s +39° 42’ 34” 22.28 Andromeda
2020 Oct 28 02h 33m 29s +39° 41’ 21” 22.28 Andromeda
2020 Oct 29 02h 33m 07s +39° 40’ 05” 22.28 Andromeda