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public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:59 
Sunset: 21:16
wb_twilight   (Civil Twilight)   What's Visible Now?

Comet 18D/Perrine-Mrkos (Lost)

Below the horizon.  Rise: 22:16 | Tran: 5:00 | Set: 11:40
Altitude: -2.3°   Azimuth: 73.4°   Direction: East-North-East

Comet 18D/Perrine-Mrkos (Lost) is currently in the constellation of Pegasus, at a distance of 285,687,624 kilometers from Earth. The current Right Ascension of Comet 18D/Perrine-Mrkos (Lost) is 21h 40m 34s and the Declination is +08° 24’ 52” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom). The current estimated magnitude of Comet 18D/Perrine-Mrkos (Lost) is 20.86 (JPL).

Finder chart of 18D/Perrine-Mrkos (Lost) in Pegasus on June,16 2024
Map showing Comet 18D/Perrine-Mrkos (Lost) in Pegasus on June, 16 2024. Field of view: 50x30 degrees
View interactive star map

21h 40m 34s
+08° 24’ 52”

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 18D/Perrine-Mrkos (Lost) from Greenwich, United Kingdom (all times relative to the local timezone Europe/London):

Azimuth: 81.6°
Max altitude: 46.8°
Azimuth: 278.3°

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 Resources

Comet 18D/Perrine-Mrkos (Lost) Position and Finder Charts

Finder chart of 18D/Perrine-Mrkos (Lost)
Map showing Comet 18D/Perrine-Mrkos (Lost) in Pegasus on June, 16 2024
Field of view: 10x6 degrees
View fullscreen

Higher precision deep sky finder chart, 60 arcmin wide, showing where Comet 18D/Perrine-Mrkos (Lost) is right now. Click on the image to see a more detailed fullscreen tracker view.

18D/Perrine-Mrkos (Lost)
RA: 21h 40m 34s
Dec: +08° 24’ 52”
Deep sky finder chart for Comet 18D/Perrine-Mrkos (Lost)
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Comet 18D/Perrine-Mrkos (Lost)?, a page that provides all the information needed to find Comet 18D/Perrine-Mrkos (Lost) in the sky and additional links to sky charts.

Comet 18D/Perrine-Mrkos (Lost) Distance from Earth

The distance of Comet 18D/Perrine-Mrkos (Lost) from Earth is currently 285,687,624 kilometers, equivalent to 1.909704 Astronomical Units. Light takes 15 minutes and 52.9513 seconds to travel from Comet 18D/Perrine-Mrkos (Lost) and arrive to us.

15 minutes and 52.9513 seconds

The following chart shows the distance of Comet 18D/Perrine-Mrkos (Lost) 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 18D/Perrine-Mrkos (Lost) 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 18D/Perrine-Mrkos (Lost) from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest Approach of Comet 18D/Perrine-Mrkos (Lost) to Earth

Between 1 January 2013 and 30 December 2100, the closest approach of Comet 18D/Perrine-Mrkos (Lost) to Earth happens on Sun Nov 28 2032 at a distance of 0.784610 Astronomical Units, or 117,375,995 kilometers:

Sun Nov 28 2032

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

Comet 18D/Perrine-Mrkos (Lost) Brightness and Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Comet 18D/Perrine-Mrkos (Lost), 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 18D/Perrine-Mrkos (Lost) as a function of time

Comet 18D/Perrine-Mrkos (Lost) Orbital Elements

The following table lists the orbital elements of Comet 18D/Perrine-Mrkos (Lost) at epoch 01 January 1970 00:00 UTC (JD: 2440240.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.64258098
Orbit inclination i 17.75898277°
Perihelion distance q 1.27224808 AU
190,325,604 km
Aphelion distance Q 5.84683635 AU
874,674,270 km
Semi-major axis a 3.55954221 AU
532,499,937 km
Orbital period period 6.7158 years
2,452.9554 days
Date of perihelion transit Tp 1968-Nov-01 13:00:40
2,440,162.0421 JD
Next perihelion transit 1975-Jul-21 11:56
2,442,614.9975 JD
Argument of perihelion peri 166.05041712495°
Longitude of the ascending node node 240.87554663092°
Mean anomaly M 11.514613023145°
Mean motion n 0.14676174°/day

Visualization of Comet 18D/Perrine-Mrkos (Lost) Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Comet 18D/Perrine-Mrkos (Lost) with respect of the Sun and the orbits of the major planets. The position of Comet 18D/Perrine-Mrkos (Lost) 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 18D/Perrine-Mrkos (Lost)
View Comet 18D/Perrine-Mrkos (Lost) in the 3D Solar System Simulator

Comet 18D/Perrine-Mrkos (Lost) 15 Days Ephemeris

The following table lists the ephemerides of Comet 18D/Perrine-Mrkos (Lost) computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Comet 18D/Perrine-Mrkos (Lost) in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2024 Jun 09 21h 36m 59s +06° 45’ 21” 21.16 Pegasus
2024 Jun 10 21h 37m 29s +06° 58’ 00” 21.12 Pegasus
2024 Jun 11 21h 37m 59s +07° 10’ 39” 21.09 Pegasus
2024 Jun 12 21h 38m 29s +07° 23’ 17” 21.05 Pegasus
2024 Jun 13 21h 38m 57s +07° 35’ 57” 21.01 Pegasus
2024 Jun 14 21h 39m 23s +07° 48’ 35” 20.97 Pegasus
2024 Jun 15 21h 39m 48s +08° 01’ 14” 20.93 Pegasus
2024 Jun 16 21h 40m 14s +08° 13’ 54” 20.89 Pegasus
2024 Jun 17 21h 40m 36s +08° 26’ 31” 20.85 Pegasus
2024 Jun 18 21h 40m 59s +08° 39’ 08” 20.81 Pegasus
2024 Jun 19 21h 41m 21s +08° 51’ 46” 20.77 Pegasus
2024 Jun 20 21h 41m 40s +09° 04’ 20” 20.73 Pegasus
2024 Jun 21 21h 41m 59s +09° 16’ 55” 20.69 Pegasus
2024 Jun 22 21h 42m 16s +09° 29’ 29” 20.65 Pegasus