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Comet 18D/Perrine-Mrkos (Lost) Ephemeris Calculator
Compute the position of Comet 18D/Perrine-Mrkos (Lost) for any date and time between 1 January 2013 and 30 December 2100 and display the results on an interactive star map.
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Comet 18D/Perrine-Mrkos (Lost)
Comet 18D/Perrine-Mrkos (Lost) is currently in the constellation of Ophiucus. The current Right Ascension of Comet 18D/Perrine-Mrkos (Lost) is 17h 34m 12s and the Declination is -18° 43’ 28” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current estimated magnitude of Comet 18D/Perrine-Mrkos (Lost) is 28.44 (JPL).
Today's rise, transit and set times of Comet 18D/Perrine-Mrkos (Lost) from Greenwich, United Kingdom [change] (all times relative to the local timezone Europe/London):
- 18D/Perrine-Mrkos (Lost) is below the horizon from Greenwich, United Kingdom [change].
- Given its current magnitude, 18D/Perrine-Mrkos (Lost) is visible only through long exposure photography.
- Go to interactive sky chart
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Comet 18D/Perrine-Mrkos (Lost) Position and Finder Charts
Below we provide Comet 18D/Perrine-Mrkos (Lost) 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.
Field of view: 50x30 degrees
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Field of view: 10x6 degrees
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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.
Field of view: 60x40 arcmins
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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 674,936,440 kilometers, equivalent to 4.511671 Astronomical Units. Light takes 37 minutes and 31.3456 seconds to travel from Comet 18D/Perrine-Mrkos (Lost) and arrive to us.
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.
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:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Comet 18D/Perrine-Mrkos (Lost) Brightness
The current visual magnitude of Comet 18D/Perrine-Mrkos (Lost) is 28.44.
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 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.
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!
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 |
|---|---|---|---|---|
| 2023 Mar 20 | 17h 32m 39s | -18° 58’ 22” | 28.56 | Ophiucus |
| 2023 Mar 21 | 17h 32m 54s | -18° 56’ 26” | 28.54 | Ophiucus |
| 2023 Mar 22 | 17h 33m 10s | -18° 54’ 29” | 28.53 | Ophiucus |
| 2023 Mar 23 | 17h 33m 23s | -18° 52’ 29” | 28.51 | Ophiucus |
| 2023 Mar 24 | 17h 33m 35s | -18° 50’ 29” | 28.49 | Ophiucus |
| 2023 Mar 25 | 17h 33m 47s | -18° 48’ 27” | 28.48 | Ophiucus |
| 2023 Mar 26 | 17h 33m 59s | -18° 46’ 23” | 28.46 | Ophiucus |
| 2023 Mar 27 | 17h 34m 09s | -18° 44’ 18” | 28.44 | Ophiucus |
| 2023 Mar 28 | 17h 34m 18s | -18° 42’ 11” | 28.43 | Ophiucus |
| 2023 Mar 29 | 17h 34m 27s | -18° 40’ 04” | 28.41 | Ophiucus |
| 2023 Mar 30 | 17h 34m 35s | -18° 37’ 54” | 28.40 | Ophiucus |
| 2023 Mar 31 | 17h 34m 41s | -18° 35’ 44” | 28.38 | Ophiucus |
| 2023 Apr 01 | 17h 34m 46s | -18° 33’ 32” | 28.36 | Ophiucus |
| 2023 Apr 02 | 17h 34m 51s | -18° 31’ 18” | 28.35 | Ophiucus |