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Sky-Tonight.com / Nebulae / NGC6939

NGC6939 Observation Details

NGC6939

NGC6939 Daily Motion

NGC6939 is circumpolar, never setting below the horizon and always visible in the night sky from your location. However, it will change its position significantly, moving 59 degrees over time. You can find the best times to observe NGC6939, when it reaches its highest elevation, in the annual motion section.
NGC6939 will be visible throughout the entire year. However, it will change its position significantly, moving 59 degrees over time. You can find the best times to observe NGC6939, when it reaches its highest elevation, in the annual motion section.

NGC6939 Visibility Timetable on January 21

Rise and Set Timetable

TimeElevation
NGC6939 is always above the horizon
NGC6939 transit12:5869°
Sunset17:3744°
Civil sunset18:0740°
Astrosession begin19:1332°
NGC6939 is always above the horizon
Moon Rise, 46.2% illuminated01:3711°
Astrosession end06:1329°
Civil sunrise07:1837°
Sunrise07:4940°
Moon Set11:5067°

Track NGC6939 Position Throughout the Night

← Tue, 21 January 2025 →

Elevation (degrees)
Time
Altitude
Azimuth
Shift the map to change the time and observe NGC6939 changing position in the night sky.

NGC6939 Image Gallery

DSS Blue

NGC6939 photo taken with blue filter
These images are valuable for highlighting the presence of younger, hotter stars, which emit more light in the blue wavelengths.

DSS Red

NGC6939 photo taken with red filter
These images are excellent for detecting older, cooler stars, as well as emission nebulae, which glow primarily in the red due to hydrogen alpha emissions.

DSS Near-Infrared

NGC6939 photo taken with Near-Infrared filter
These images can penetrate dust clouds that obscure visible light, revealing structures and objects hidden within.

DSS Composite image

NGC6939 color image
DSS Color images are composite images created by combining the blue, red, and often near-infrared images to produce a full-color representation.

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

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

Finder Chart for NGC6939

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Object nameNGC6939
Field of view
Limiting magnitude
NGC6939 coordinates20.52504, 60.66208
Center coordinates20.52504, 60.66208

NGC6939 Passage Through Night

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Current position of NGC6939

Time18:56
Latitude39.9625
Longitude-83.0061
NGC6939 elevation34°
NGC6939 Azimuth36°
Here you can see the current position of the NGC6939 on the map, as well as its positions for rise and set. This tool allows you to track the NGC6939's movement throughout the night, providing you with accurate and up-to-date information.

Annual motion of NGC6939

Time
DateWed, 22 January 2025
Twighlight start19:09
Twighlight end06:08
Twighlight duration11h 59m
RiseNGC6939 is always up
SetNGC6939 is always up
Elevation at transit69°
Transit time12:54
Equatorial coordinateRA: 20h 31m 30s", Dec: 60° 39' 43s
Magnitude8
ConstellationCepheus
The graph illustrates the annual visibility pattern of a NGC6939, providing a comprehensive overview of its daily appearances and transit times throughout the year.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the NGC6939 is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.

Data Credits

The nebulae information on this page is sourced from the OpenNGC project, developed by Matteo Verga. OpenNGC provides detailed data on the NGC catalog, which is a valuable resource for exploring deep-sky objects such as nebulae.

For more details or to contribute to OpenNGC, visit the official GitHub repository: OpenNGC on GitHub.