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🌎  Observing from: 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 02m 14s and the Declination is -04° 02’ 28” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 378P/McNaught is 19.62 (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 02m 14s
-04° 02’ 28”

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 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 February, 09 2023
Field of view: 50x30 degrees
View fullscreen
Map showing Comet 378P/McNaught in Cetus on February, 09 2023
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 02m 14s
Dec: -04° 02’ 28”
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 903,457,111 kilometers, equivalent to 6.039238 Astronomical Units. Light takes 50 minutes and 13.6085 seconds to travel from Comet 378P/McNaught and arrive to us.

50 minutes and 13.6085 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 2.340041 Astronomical Units, or 350,065,212 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 19.62.


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: 94.0°
Max altitude: 34.5°
Azimuth: 266.0°

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 08 November 2018 00:00 UTC (JD: 2458431.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.46695798
Orbit inclination i 19.10950608°
Perihelion distance q 3.37937081 AU
505,546,679 km
Aphelion distance Q 9.30019544 AU
1,391,289,438 km
Semi-major axis a 6.33978313 AU
948,418,059 km
Orbital period period 15.9632 years
5,830.5568 days
Date of perihelion transit Tp 2020-Oct-22 15:10:23
2,459,145.1322 JD
Next perihelion transit 2036-Oct-09 04:32
2,464,975.6890 JD
Argument of perihelion peri 194.31681160431°
Longitude of the ascending node node 94.519421559834°
Mean anomaly M 315.93772468774°
Mean motion n 0.06174367°/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
2023 Feb 02 01h 59m 29s -04° 41’ 07” 19.57 Cetus
2023 Feb 03 01h 59m 51s -04° 35’ 43” 19.57 Cetus
2023 Feb 04 02h 00m 12s -04° 30’ 17” 19.58 Cetus
2023 Feb 05 02h 00m 35s -04° 24’ 51” 19.59 Cetus
2023 Feb 06 02h 00m 59s -04° 19’ 24” 19.60 Cetus
2023 Feb 07 02h 01m 23s -04° 13’ 56” 19.61 Cetus
2023 Feb 08 02h 01m 46s -04° 08’ 29” 19.61 Cetus
2023 Feb 09 02h 02m 12s -04° 03’ 01” 19.62 Cetus
2023 Feb 10 02h 02m 36s -03° 57’ 30” 19.63 Cetus
2023 Feb 11 02h 03m 02s -03° 52’ 01” 19.64 Cetus
2023 Feb 12 02h 03m 29s -03° 46’ 32” 19.64 Cetus
2023 Feb 13 02h 03m 55s -03° 41’ 02” 19.65 Cetus
2023 Feb 14 02h 04m 22s -03° 35’ 30” 19.66 Cetus
2023 Feb 15 02h 04m 49s -03° 30’ 00” 19.67 Cetus