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Sky-Tonight.com / Nebulae and Deep-Sky Objects / M91

M91 Position and Visibility Tonight

Where is M91 right now?

M91 is located in the constellation Coma Berenices. Although M91 is currently 65° above the horizon, it is not visible because it is daytime.
Twilight begins at 18:26 local time. At that moment, M91 will be 11° above the horizon toward the west.

Open the interactive guide to M91’s position and path tonight

M91 visibility on 2026-09-07

M91 Visible from sunset until early morning

M91 rise and set timetable

	Time	Elevation
M91 transit	12:39	67°
Moonset	14:56	52°
Sunset	17:27	23°
Civil sunset	17:55	17°
Twilight start	18:26	11°
Astronomical observing session begins	18:58	5°
M91 set	19:23
Moonrise, 21% illuminated	23:21	-35°
Astronomical observing session ends	03:13	-26°
M91 rise	05:50

Track M91 Position Throughout the Night

← 7 September 2026 →

Time
Altitude
Azimuth

Shift the map to change the time and observe M91 changing position in the night sky.

M91 - Barred Spiral Galaxy

M91 is a barred spiral galaxy located in the constellation Coma Berenices. It was discovered by Charles Messier in 1781. M91 is part of the Virgo Cluster of galaxies and is known for its well-defined spiral arms and bright central bar.

M91 spans about 100,000 light-years across and contains a massive population of stars, gas, and dust. The galaxy is approximately 63 million light-years away from Earth and has an apparent magnitude of 10.2, making it visible with a small telescope.

M91 — 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.

Finder Chart for M91

Double-click to unlock the map.

Object name	M91
Field of view
Limiting magnitude
M91 coordinates	12.59068, 14.49633
Center coordinates	12.59068, 14.49633

M91 Passage Through Night

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Current position of M91

Time	13:29
Latitude	37.3541
Longitude	-121.955
Elevation	65°
Azimuth	209°

Here you can see the current position of M91 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 M91 Visible Throughout the Year?

M91 will become visible again around November 4 after moving far enough from the Sun.

Date	Mon, 7 September 2026
Twilight start	18:54
Twilight end	03:07
Twilight duration	8h 13m
Rise	05:50
Set	19:19
Elevation at transit	67°
Transit time	12:35
Equatorial coordinates	RA: 12h 35m 26s", Dec: 14° 29' 46s
Magnitude	11
Constellation	Coma Berenices

The graph illustrates the annual visibility pattern of M91, 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 M91 is visible throughout the year in a table with exact rise, transit, and set times for each date.

Astrometric and Physical Parameters of M91

Coordinates and Visibility

Right Ascension	12h 35m 26s
Declination	14° 29′ 47″
Magnitude	10.96
Constellation	Coma Berenices
Elevation	64.6°
Azimuth	209.2°

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