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Sky-Tonight.com / Nebulae and Deep-Sky Objects / M4
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Observation Settings

Or select it on the map:
This Earth map lets you select the observer’s location used to calculate the bearing and elevation of celestial objects. The selected point determines how the sky, rise and set times, and object positions are shown.
Your location: Santa Clara, United States
Timezone:
Latitude:
37.3541
Longitude:
-121.955

M4 Position and Visibility Tonight

M4

Where is M4 right now?

M4 is located in the constellation Scorpius. It is currently below the horizon and is not visible from your location.
Twilight begins at 18:02 local time. At that moment, M4 will be 16° above the horizon toward the south-west.
Open the interactive guide to M4’s position and path tonight

M4 visibility on 2026-09-22

M4 Visible from sunset until before midnight

M4 rise and set timetable

TimeElevation
Moonrise, 69.9% illuminated 14:3925°
M4 transit15:2726°
Sunset17:0422°
Civil sunset17:3220°
Twilight start (−12°)18:0216°
Astronomical observing session begins18:3313°
M4 set19:57
Moonset00:43-54°
Astronomical observing session ends03:28-79°
M4 rise10:54

Track M4 position throughout the night

← 22 September 2026 →

Elevation (degrees)
Time
Altitude
Azimuth
Shift the map to change the time and observe M4 changing position in the night sky.

M4 - Globular Cluster

M4 is a globular cluster located in the constellation Scorpius. It was discovered by Philippe Loys de Chéseaux in 1746 and included in Messier's catalog in 1764. M4 is one of the closest globular clusters to Earth.

M4 spans about 75 light-years across and contains tens of thousands of stars. The cluster is approximately 7,200 light-years away from Earth and has an apparent magnitude of 5.9, making it visible to the naked eye under dark skies and easily seen with binoculars or a small telescope.

M4 — Image Gallery

DSS Blue

M4 — blue-filter image
Blue images highlight younger, hotter stars that emit strongly at blue wavelengths.

DSS Red

M4 — red-filter image
Red images reveal older, cooler stars and emission nebulae glowing strongly in hydrogen-alpha light.

DSS Near-Infrared

M4 — near-infrared image
Near-infrared images penetrate dust that obscures visible light and reveal hidden structures.

DSS Composite Image

M4 — composite color 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.

Finder Chart for M4

Double-click to unlock the map.
Object nameM4
Field of view
Limiting magnitude
M4 coordinates16.39317, -26.52553
Center coordinates16.39317, -26.52553

M4 Passage Through Night

Double-click to unlock the map.

Current position of M4

Time06:18
Latitude37.3541
Longitude-121.955
Elevation-53°
Azimuth86°
Here you can see the current position of M4 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 M4 Visible Throughout the Year?

M4 will remain visible until November 4, when it moves too close to the Sun and temporarily disappears from the night sky. Time
DateTue, 22 September 2026
Astronomical observing session begins18:29
Astronomical observing session ends03:21
Astronomical observing duration9h 53m
Rise10:54
Set19:53
Elevation at transit26°
Transit time15:23
Equatorial coordinatesRA: 16h 23m 35s", Dec: -26° 31' 31s
Magnitude5
ConstellationScorpius
The graph illustrates the annual visibility pattern of M4, 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 M4 is visible throughout the year in a table with exact rise, transit, and set times for each date.

Astrometric and Physical Parameters of M4

Coordinates and Visibility

Right Ascension16h 23m 35s
Declination-26° 31′ 32″
Magnitude5.4
ConstellationScorpius
Elevation-52.9°
Azimuth85.5°

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.