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Comet 75D/Kohoutek (Lost)

Above the horizon.  Rise: 20:20 | Tran: 0:29 | Set: 4:42
Alt: 17.35°   Az: 193.70°   Direction: South-South-West

Comet 75D/Kohoutek (Lost) is in the constellation of Sagittarius, at a distance of 586,245,905.0 kilometers from Earth. The current Right Ascension is 19h 10m 00s and the Declination is -20° 08’ 03” (apparent coordinates). The estimated magnitude of comet 75D/Kohoutek (Lost), computed using JPL Horizons's data, is 20.39.

Finder Charts

The sky charts below show, at different resolutions, the position of comet 75D/Kohoutek (Lost) in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of comet 75D/Kohoutek (Lost) in the constellation of Sagittarius on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of comet 75D/Kohoutek (Lost) in the constellation of Sagittarius on F, d Y. Field of view: 15x9 degrees. View in interactive star map.

The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of comet 75D/Kohoutek (Lost) against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.

75D/Kohoutek (Lost)
RA: 19h 08m 30s
Dec: -20° 10’ 35”
Simplified high-resolution deep sky chart showing the current position of comet 75D/Kohoutek (Lost). Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

19h 10m 00s
-20° 08’ 03”
00h 55m 44s
20h 05m 44s

J2000

19h 08m 30s
-20° 10’ 35”

Additional Information

Sagittarius
n/a
n/a
n/a
n/a
20.39

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

The following table lists today's rise, transit and set times of comet 75D/Kohoutek (Lost) from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 110.1°
Max altitude: 18.4°
Azimuth: 249.9°

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.

Distance from Earth

The distance of comet 75D/Kohoutek (Lost) from Earth is currently 586,245,905.0 kilometers, equivalent to 3.9188118270 Astronomical Units. Light takes 32m 35.506s to travel from comet 75D/Kohoutek (Lost) and arrive to us.

586,245,905.0
3.9188118270
32m 35.506s

The following graph shows the distance of comet 75D/Kohoutek (Lost) from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.

Chart of the distance of comet 75D/Kohoutek (Lost) from Earth in Astronomical Units (au)
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).

The value of the distance of 75D/Kohoutek (Lost) from Earth is also available as a real time updated value in the live position tracker.

Closest Approach to Earth

In the period between January 1, 2000 and December 31, 2099, the closest approach of comet 75D/Kohoutek (Lost) to Earth will happen on Thursday 28 December 2056 at a distance of 0.331356 Astronomical Units, or 49,570,221 kilometers:

Thursday 28 December 2056
49,570,221
0.331356

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

Light Curve

The following chart shows the light curve of comet 75D/Kohoutek (Lost), i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.

Chart of the magnitude of comet 75D/Kohoutek (Lost) as a function of time

Orbital Elements

The following table lists the orbital elements of comet 75D/Kohoutek (Lost) at epoch June, 16 1994 00:00 UTC (JD: 2449520.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.49630740
Orbit inclination i 5.90720926°
Perihelion distance q 1.78465694 AU
266,980,879 km
Aphelion distance Q 5.30163706 AU
793,113,617 km
Semi-major axis a 3.54314700 AU
530,047,248 km
Orbital period period 6.6695 years
2,436.0275 days
Date of perihelion transit Tp June 29, 1994
2,449,533.3985 JD
Next perihelion transit February 28, 2001
2,451,969.4260 JD
Argument of perihelion peri 175.80172466179°
Longitude of the ascending node node 269.68609454603°
Mean anomaly M 358.0938421757°
Mean motion n 0.14778158°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of comet 75D/Kohoutek (Lost) relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.

15 Days Ephemeris

The following table lists the ephemerides of comet 75D/Kohoutek (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
Jul 09 2025 19h 14m 54s -20° 02’ 46” 20.41 Sagittarius
Jul 10 2025 19h 14m 12s -20° 03’ 31” 20.41 Sagittarius
Jul 11 2025 19h 13m 30s -20° 04’ 16” 20.40 Sagittarius
Jul 12 2025 19h 12m 48s -20° 05’ 01” 20.40 Sagittarius
Jul 13 2025 19h 12m 06s -20° 05’ 47” 20.40 Sagittarius
Jul 14 2025 19h 11m 25s -20° 06’ 32” 20.40 Sagittarius
Jul 15 2025 19h 10m 43s -20° 07’ 17” 20.39 Sagittarius
Jul 16 2025 19h 10m 01s -20° 08’ 02” 20.39 Sagittarius
Jul 17 2025 19h 09m 19s -20° 08’ 47” 20.39 Sagittarius
Jul 18 2025 19h 08m 38s -20° 09’ 30” 20.39 Sagittarius
Jul 19 2025 19h 07m 57s -20° 10’ 15” 20.39 Sagittarius
Jul 20 2025 19h 07m 15s -20° 10’ 58” 20.39 Sagittarius
Jul 21 2025 19h 06m 35s -20° 11’ 42” 20.39 Sagittarius
Jul 22 2025 19h 05m 54s -20° 12’ 24” 20.39 Sagittarius

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