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🌎  Greenwich, United Kingdom [change]

Comet 378P/McNaught

Comet 378P/McNaught is currently in the constellation of Cetus. The current Right Ascension of Comet 378P/McNaught is 02h 20m 40s and the Declination is -04° 50’ 54” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 378P/McNaught is 19.69 (JPL).

Summary of key facts about Comet 378P/McNaught [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 20m 40s
-04° 50’ 54”

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Additional information about Comet 378P/McNaught available on TheSkyLive:

Available Resources

Comet 378P/McNaught Position and Finder Charts

Below we provide Comet 378P/McNaught 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 378P/McNaught in Cetus on July, 07 2022
Field of view: 50x30 degrees
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Map showing Comet 378P/McNaught in Cetus on July, 07 2022
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 378P/McNaught is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 02h 20m 40s
Dec: -04° 50’ 54”
Deep sky finder chart for Comet 378P/McNaught
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 378P/McNaught?, a page that provides all the information needed to find Comet 378P/McNaught in the sky and additional links to sky charts.

Comet 378P/McNaught Distance from Earth

The distance of Comet 378P/McNaught from Earth is currently 769,657,283 kilometers, equivalent to 5.144841 Astronomical Units. Light takes 42 minutes and 47.3004 seconds to travel from Comet 378P/McNaught and arrive to us.

42 minutes and 47.3004 seconds

The following chart shows the distance of Comet 378P/McNaught 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 378P/McNaught 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 378P/McNaught from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Comet 378P/McNaught to Earth

Between January 2013 and December 2100, the closest approach of Comet 378P/McNaught to Earth happens on Fri Jul 11 2036 at a distance of 2.340040 Astronomical Units, or 350,064,992 kilometers:

Fri Jul 11 2036

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

Comet 378P/McNaught brightness

The current visual magnitude of Comet 378P/McNaught is 19.69.


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 378P/McNaught, 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 378P/McNaught between January 2013 and December 2100

Comet 378P/McNaught 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 378P/McNaught rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 94.8°
Max altitude: 33.7°
Azimuth: 265.2°

The rise and set times are defined as the time at which the upper limb of Comet 378P/McNaught 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 378P/McNaught Orbital Elements

The following table lists the orbital elements of Comet 378P/McNaught at epoch 03 October 2014 00:00 UTC (JD: 2456934.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.46524961
Orbit inclination i 19.13378026°
Perihelion distance q 3.37928843 AU
505,534,354 km
Aphelion distance Q 9.25946217 AU
1,385,195,827 km
Semi-major axis a 6.31937530 AU
945,365,090 km
Orbital period period 15.8862 years
5,802.4265 days
Date of perihelion transit Tp 2020-Oct-30 11:27:55
2,459,152.9777 JD
Next perihelion transit 2036-Sep-18 21:42
2,464,955.4042 JD
Argument of perihelion peri 194.64595202389°
Longitude of the ascending node node 94.598824424334°
Mean anomaly M 222.35896634957°
Mean motion n 0.06204301°/day

Visualization of Comet 378P/McNaught Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 378P/McNaught with respect of the Sun and the orbits of the major planets. The position of Comet 378P/McNaught 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 378P/McNaught
View Comet 378P/McNaught in the 3D Solar System Simulator

Comet 378P/McNaught 15 Days Ephemeris

The following table lists the ephemerides of Comet 378P/McNaught computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 378P/McNaught in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2022 Jun 30 02h 16m 20s -04° 54’ 11” 19.71 Cetus
2022 Jul 01 02h 16m 57s -04° 53’ 30” 19.71 Cetus
2022 Jul 02 02h 17m 32s -04° 52’ 54” 19.71 Cetus
2022 Jul 03 02h 18m 07s -04° 52’ 22” 19.71 Cetus
2022 Jul 04 02h 18m 42s -04° 51’ 54” 19.70 Cetus
2022 Jul 05 02h 19m 15s -04° 51’ 30” 19.70 Cetus
2022 Jul 06 02h 19m 49s -04° 51’ 12” 19.70 Cetus
2022 Jul 07 02h 20m 21s -04° 50’ 58” 19.69 Cetus
2022 Jul 08 02h 20m 54s -04° 50’ 48” 19.69 Cetus
2022 Jul 09 02h 21m 26s -04° 50’ 44” 19.69 Cetus
2022 Jul 10 02h 21m 57s -04° 50’ 43” 19.69 Cetus
2022 Jul 11 02h 22m 28s -04° 50’ 47” 19.68 Cetus
2022 Jul 12 02h 22m 59s -04° 50’ 54” 19.68 Cetus
2022 Jul 13 02h 23m 27s -04° 51’ 07” 19.68 Cetus