Comet 18D/Perrine-Mrkos (Lost)
Comet 18D/Perrine-Mrkos (Lost) is in the constellation of
Taurus,
at a distance of
Finder Charts
View interactive star map
High 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.
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.
Celestial Coordinates
Apparent
J2000
Additional Information
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.
Rise and Set Times
Today's rise, transit and set times of Comet 18D/Perrine-Mrkos (Lost) from Greenwich, UK (all times relative to the local timezone Europe/London):
- 18D/Perrine-Mrkos (Lost) is above the horizon from Greenwich, UK.
- Right now it is placed in the East-South-East direction at an altitude of 28.54° above the horizon.
- Given its current magnitude, 18D/Perrine-Mrkos (Lost) is visible only through long exposure photography.
- Go to interactive sky chart
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Distance from Earth
The distance of Comet 18D/Perrine-Mrkos (Lost) from Earth is currently
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
Between 1 January 2000 and 31 December 2099, 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.
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.
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 |
Orbit Visualization
View Comet 18D/Perrine-Mrkos (Lost) in the 3D Solar System Simulator
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. Apparent celestial coordinates are provided.
| Date | Right AscensionR.A. | DeclinationDec. | MagnitudeMag | Constellation |
|---|---|---|---|---|
| 2025 Apr 06 | 04h 05m 39s | +14° 44’ 49” | 18.96 | Taurus |
| 2025 Apr 07 | 04h 08m 14s | +14° 47’ 24” | 19.00 | Taurus |
| 2025 Apr 08 | 04h 10m 49s | +14° 49’ 52” | 19.03 | Taurus |
| 2025 Apr 09 | 04h 13m 23s | +14° 52’ 14” | 19.06 | Taurus |
| 2025 Apr 10 | 04h 15m 57s | +14° 54’ 29” | 19.09 | Taurus |
| 2025 Apr 11 | 04h 18m 30s | +14° 56’ 38” | 19.13 | Taurus |
| 2025 Apr 12 | 04h 21m 04s | +14° 58’ 39” | 19.16 | Taurus |
| 2025 Apr 13 | 04h 23m 37s | +15° 00’ 34” | 19.19 | Taurus |
| 2025 Apr 14 | 04h 26m 09s | +15° 02’ 22” | 19.22 | Taurus |
| 2025 Apr 15 | 04h 28m 41s | +15° 04’ 04” | 19.26 | Taurus |
| 2025 Apr 16 | 04h 31m 13s | +15° 05’ 38” | 19.29 | Taurus |
| 2025 Apr 17 | 04h 33m 44s | +15° 07’ 07” | 19.32 | Taurus |
| 2025 Apr 18 | 04h 36m 15s | +15° 08’ 28” | 19.36 | Taurus |
| 2025 Apr 19 | 04h 38m 46s | +15° 09’ 43” | 19.39 | Taurus |
Additional Resources
- Position and finder charts (see also Where is Comet 18D/Perrine-Mrkos (Lost)?)
- Distance from Earth (see also How far is Comet 18D/Perrine-Mrkos (Lost) from Earth?)
- When does Comet 18D/Perrine-Mrkos (Lost) rise and set?
- Brightness (see also How bright is Comet 18D/Perrine-Mrkos (Lost)?)
- Orbital elements. Detailed information about Comet 18D/Perrine-Mrkos (Lost) orbital parameters.
- Interactive orbit visualization. 3d visualization showing the orbit of Comet 18D/Perrine-Mrkos (Lost) with respect to the major Solar System objects.
- 15 days ephemerides. Table showing celestial coordinates and magnitude of Comet 18D/Perrine-Mrkos (Lost) for the past and next 7 days.
- Interactive sky chart. An online planetarium application that shows where to locate Comet 18D/Perrine-Mrkos (Lost) in the sky from your location.
- Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Comet 18D/Perrine-Mrkos (Lost) with your telescope or on your astrophotographies.