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Comet 15P/Finlay

Comet 15P/Finlay is currently in the constellation of Aquarius. The current Right Ascension of Comet 15P/Finlay is 23h 20m 52s and the Declination is -11° 43’ 21” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 15P/Finlay is 12.81 (JPL) while the latest observed magnitude is 14.1 (COBS).

Summary of key facts about Comet 15P/Finlay [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]:

23h 20m 52s
-11° 43’ 21”

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Additional information about Comet 15P/Finlay available on TheSkyLive:

Available Resources

Comet 15P/Finlay Position and Finder Charts

Below we provide Comet 15P/Finlay 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 15P/Finlay in Aquarius on May, 16 2021
Field of view: 50x30 degrees
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Map showing Comet 15P/Finlay in Aquarius on May, 16 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 15P/Finlay is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 23h 20m 52s
Dec: -11° 43’ 21”
Deep sky finder chart for Comet 15P/Finlay
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 15P/Finlay?, a page that provides all the information needed to find Comet 15P/Finlay in the sky and additional links to sky charts.

Comet 15P/Finlay Distance from Earth

The distance of Comet 15P/Finlay from Earth is currently 183,066,366 kilometers, equivalent to 1.223723 Astronomical Units. Light takes 10 minutes and 10.6437 seconds to travel from Comet 15P/Finlay and arrive to us.

10 minutes and 10.6437 seconds

The following chart shows the distance of Comet 15P/Finlay 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 15P/Finlay 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 15P/Finlay from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 15P/Finlay to Earth

Between January 2013 and December 2100, the closest approach of Comet 15P/Finlay to Earth happens on Wed Oct 27 2060 at a distance of 0.049317 Astronomical Units, or 7,377,698 kilometers:

Wed Oct 27 2060

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

Comet 15P/Finlay brightness

The current visual magnitude of Comet 15P/Finlay is 12.81.


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 15P/Finlay, 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 15P/Finlay between January 2013 and December 2100

Comet 15P/Finlay 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 15P/Finlay rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 102.0°
Max altitude: 26.6°
Azimuth: 258.2°

The rise and set times are defined as the time at which the upper limb of Comet 15P/Finlay 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 15P/Finlay Orbital Elements

The following table lists the orbital elements of Comet 15P/Finlay at epoch 23 April 2013 00:00 UTC (JD: 2456406.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.72046703
Orbit inclination i 6.80365595°
Perihelion distance q 0.97465031 AU
145,805,612 km
Aphelion distance Q 5.99876912 AU
897,403,089 km
Semi-major axis a 3.48670972 AU
521,604,350 km
Orbital period period 6.5100 years
2,378.0562 days
Date of perihelion transit Tp 2014-Dec-26 22:25:48
2,457,018.4346 JD
Next perihelion transit 2021-Jun-30 23:46
2,459,396.4908 JD
Argument of perihelion peri 347.5656143943°
Longitude of the ascending node node 13.800639673911°
Mean anomaly M 267.36280705588°
Mean motion n 0.15138414°/day

Visualization of Comet 15P/Finlay Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 15P/Finlay with respect of the Sun and the orbits of the major planets. The position of Comet 15P/Finlay 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 15P/Finlay
View Comet 15P/Finlay in the 3D Solar System Simulator

Comet 15P/Finlay 15 Days Ephemeris

The following table lists the ephemerides of Comet 15P/Finlay computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 15P/Finlay in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 May 09 22h 49m 18s -15° 03’ 46” 13.35 Aquarius
2021 May 10 22h 53m 21s -14° 39’ 12” 13.28 Aquarius
2021 May 11 22h 57m 24s -14° 14’ 12” 13.21 Aquarius
2021 May 12 23h 01m 29s -13° 48’ 42” 13.14 Aquarius
2021 May 13 23h 05m 35s -13° 22’ 42” 13.07 Aquarius
2021 May 14 23h 09m 43s -12° 56’ 17” 13.00 Aquarius
2021 May 15 23h 13m 53s -12° 29’ 21” 12.93 Aquarius
2021 May 16 23h 18m 02s -12° 01’ 59” 12.86 Aquarius
2021 May 17 23h 22m 14s -11° 34’ 10” 12.79 Aquarius
2021 May 18 23h 26m 27s -11° 05’ 54” 12.72 Aquarius
2021 May 19 23h 30m 42s -10° 37’ 11” 12.65 Aquarius
2021 May 20 23h 34m 56s -10° 08’ 03” 12.58 Aquarius
2021 May 21 23h 39m 12s -09° 38’ 30” 12.51 Aquarius
2021 May 22 23h 43m 31s -09° 08’ 30” 12.45 Aquarius