M39 Position and Visibility Tonight

Where is M39 right now?

M39 is located in the constellation Cygnus. Although M39 is currently 71° above the horizon, it is not visible because it is daytime.

Open the interactive guide to M39’s position and path tonight

M39 tonight

M39 visibility on 2026-11-05

M39 Visible from sunset until early morning

M39 rise and set timetable

	Time	Elevation
Moonrise, 18.4% illuminated	22:13	12°
Moonset	10:25	51°
Sunset	12:23	70°
Civil sunset	12:53	75°
Twilight start (−12°)	13:25	79°
Astronomical observing session begins	13:57	81°
M39 transit	14:02	82°
Astronomical observing session ends	00:34	0°
M39 set	00:44
M39 rise	03:17

Track M39 position throughout the night

← 5 November 2026 →

Time
Altitude
Azimuth

Shift the map to change the time and observe M39 changing position in the night sky.

M39 - Open Cluster

M39 is an open cluster located in the constellation Cygnus. It was discovered by Charles Messier in 1764. The cluster contains a relatively sparse population of stars compared to other open clusters in Messier's catalog.

M39 spans about 7 light-years across and contains around 30 stars. The cluster is approximately 800 light-years away from Earth and has an apparent magnitude of 4.6, making it visible to the naked eye under dark skies and easily seen with binoculars or a small telescope.

M39 — Image Gallery

DSS Blue

Blue images highlight younger, hotter stars that emit strongly at blue wavelengths.

DSS Red

Red images reveal older, cooler stars and emission nebulae glowing strongly in hydrogen-alpha light.

DSS Near-Infrared

Near-infrared images penetrate dust that obscures visible light and reveal hidden structures.

DSS Composite Image

DSS color images combine blue, red and often near-infrared exposures into a composite view.

The images come from the Digitized Sky Survey 2 (DSS2), produced at the Space Telescope Science Institute (STScI) under contract with NASA, using data from UK Science and Technology Facilities Council (STFC), European Southern Observatory (ESO), National Geographic Society-Palomar Observatory Sky Survey (POSS II).

Special thanks to National Optical Astronomy Observatory (NOAO), Royal Observatory, Edinburgh, California Institute of Technology for their significant contributions.

M39 Passage Through Night

Double-click to unlock the map.

Current position of M39

Time	12:25
Latitude	39.9612
Longitude	-82.9988
Elevation	71°
Azimuth	56°

Here you can see the current position of M39 on the map, as well as its positions for rise and set. This tool lets you track its movement throughout the night with accurate, up-to-date information.

When Is M39 Visible Throughout the Year?

M39 will remain visible until February 6, when it moves too close to the Sun and temporarily disappears from the night sky.

Date	Fri, 6 November 2026
Astronomical observing session begins	13:53
Astronomical observing session ends	00:28
Astronomical observing duration	11h 35m
Rise	03:17
Set	00:40
Elevation at transit	82°
Transit time	13:58
Equatorial coordinates	RA: 21h 31m 48s", Dec: 48° 26' 17s
Magnitude	5
Constellation	Cygnus

The graph illustrates the annual visibility pattern of M39, including its daily appearances and transit times. The vertical axis shows the hours of the day and the horizontal axis spans the year. The reddish area marks when the object is above the horizon, while the white line marks its daily transit.
You can also see when M39 is visible throughout the year in a table with exact rise, transit, and set times for each date.

Astrometric and Physical Parameters of M39

Coordinates and Visibility

Right Ascension	21h 31m 48s
Declination	48° 26′ 17″
Magnitude	4.6
Constellation	Cygnus
Elevation	70.6°
Azimuth	55.9°

Data Credits

The deep-sky information on this page comes from the OpenNGC project developed by Matteo Verga. OpenNGC provides detailed catalog data for nebulae, galaxies, clusters and other deep-sky objects.

For details or contributions, visit the official repository: OpenNGC GitHub.

Observation Settings