Your Guide to the Solar System and the Night Sky
Donate now! You'll help cover server costs, enhance the site and keep it ad-free.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:44  
clear_day Transit: 12:57  
SunsetSet: 21:11 south
wb_twilight Astronomical TwilightWhat's Visible Now
Comets » 

Comet 6P/d'Arrest

Altitude: -13.0°   Azimuth: 314.4°   Direction: North-West

Comet 6P/d'Arrest was discovered by Heinrich Louis d'Arrest on June 28, 1851. It has an orbital period of approximately 6.5 years and its perihelion distance is about 1.4 astronomical units (AU), while its aphelion distance is around 5.6 AU.

Comet 6P/d'Arrest is currently in the constellation of Gemini. The current Right Ascension of Comet 6P/d'Arrest is 06h 56m 56s and the Declination is +14° 24’ 33” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom edit_location_alt). The current estimated magnitude of Comet 6P/d'Arrest is 25.34 (JPL).

06h 56m 56s
+14° 24’ 33”

The observed values of Magnitude, Coma Diameter and Tail Length are derived from the most recent observation recorded at the Comet Observers Database. The value of Predicted Magnitude comes from the JPL Horizons ephemerides service and, in the case of comets, might be inaccurate given the highly dynamic and unpredictable behavior of these objects. When available, please refer to the Observed Magnitude value and consider the Predicted 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.

Today's rise, transit and set times of Comet 6P/d'Arrest from Greenwich, United Kingdom edit_location_alt (all times relative to the local timezone Europe/London):

Azimuth: 75.6°
Max altitude: 52.9°
Azimuth: 284.4°
  • 6P/d'Arrest is below the horizon from Greenwich, United Kingdom edit_location_alt.
  • Given its current magnitude, 6P/d'Arrest is visible only through long exposure photography.
  • 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.

Available Resources

Comet 6P/d'Arrest Position and Finder Charts

Below we provide Comet 6P/d'Arrest 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.

Finder chart of 6P/d'Arrest in Gemini on June,09 2023
Map showing Comet 6P/d'Arrest in Gemini on June, 09 2023
Field of view: 50x30 degrees
View fullscreen
Finder chart of 6P/d'Arrest
Map showing Comet 6P/d'Arrest in Gemini on June, 09 2023
Field of view: 10x6 degrees
View fullscreen

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet 6P/d'Arrest is right now. Click on the image to see a more detailed fullscreen tracker view.

RA: 06h 56m 56s
Dec: +14° 24’ 33”
Deep sky finder chart for Comet 6P/d'Arrest
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 6P/d'Arrest?, a page that provides all the information needed to find Comet 6P/d'Arrest in the sky and additional links to sky charts.

Comet 6P/d'Arrest Distance from Earth

The distance of Comet 6P/d'Arrest from Earth is currently 834,984,107 kilometers, equivalent to 5.581524 Astronomical Units. Light takes 46 minutes and 25.2072 seconds to travel from Comet 6P/d'Arrest and arrive to us.

46 minutes and 25.2072 seconds

The following chart shows the distance of Comet 6P/d'Arrest 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.

Chart of the distance of Comet 6P/d'Arrest from Earth in Astronomical Units (au)

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 6P/d'Arrest from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach of Comet 6P/d'Arrest to Earth

Between 1 January 2013 and 30 December 2100, the closest approach of Comet 6P/d'Arrest to Earth happens on Wed Aug 7 2047 at a distance of 0.336992 Astronomical Units, or 50,413,268 kilometers:

Wed Aug 7 2047

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

Comet 6P/d'Arrest Brightness and Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 6P/d'Arrest, 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.

Chart of the magnitude of Comet 6P/d'Arrest as a function of time

Comet 6P/d'Arrest Orbital Elements

The following table lists the orbital elements of Comet 6P/d'Arrest at epoch 28 March 2021 00:00 UTC (JD: 2459302.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.61267012
Orbit inclination i 19.51243095°
Perihelion distance q 1.35458525 AU
202,643,070 km
Aphelion distance Q 5.63989328 AU
843,716,027 km
Semi-major axis a 3.49723927 AU
523,179,549 km
Orbital period period 6.5403 years
2,388.8366 days
Date of perihelion transit Tp 2021-Sep-17 18:56:35
2,459,475.2893 JD
Next perihelion transit 2028-Apr-02 15:01
2,461,864.1259 JD
Argument of perihelion peri 178.10645985005°
Longitude of the ascending node node 138.93710032586°
Mean anomaly M 333.96048528036°
Mean motion n 0.15070097°/day

Visualization of Comet 6P/d'Arrest Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 6P/d'Arrest with respect of the Sun and the orbits of the major planets. The position of Comet 6P/d'Arrest 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 6P/d'Arrest
View Comet 6P/d'Arrest in the 3D Solar System Simulator

Comet 6P/d'Arrest 15 Days Ephemeris

The following table lists the ephemerides of Comet 6P/d'Arrest computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 6P/d'Arrest in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2023 Jun 02 06h 49m 56s +14° 21’ 11” 25.29 Gemini
2023 Jun 03 06h 50m 49s +14° 21’ 47” 25.30 Gemini
2023 Jun 04 06h 51m 42s +14° 22’ 18” 25.30 Gemini
2023 Jun 05 06h 52m 33s +14° 22’ 49” 25.31 Gemini
2023 Jun 06 06h 53m 26s +14° 23’ 14” 25.32 Gemini
2023 Jun 07 06h 54m 20s +14° 23’ 39” 25.32 Gemini
2023 Jun 08 06h 55m 13s +14° 24’ 01” 25.33 Gemini
2023 Jun 09 06h 56m 05s +14° 24’ 20” 25.34 Gemini
2023 Jun 10 06h 56m 58s +14° 24’ 36” 25.34 Gemini
2023 Jun 11 06h 57m 51s +14° 24’ 50” 25.35 Gemini
2023 Jun 12 06h 58m 45s +14° 25’ 00” 25.36 Gemini
2023 Jun 13 06h 59m 39s +14° 25’ 09” 25.36 Gemini
2023 Jun 14 07h 00m 32s +14° 25’ 15” 25.37 Gemini
2023 Jun 15 07h 01m 26s +14° 25’ 18” 25.38 Gemini