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Sky-Tonight.com / Nebulae / NGC1023

NGC1023 Observation Details

NGC1023

NGC1023 Daily Motion

NGC1023 will rise before twilight begins, at 17:29, and will reach 5° elevation by the time twilight commences at 18:10. It will reach its transit at 88° by 02:01 and gradually fade away as the night ends at 03:55, maintaining an elevation of around 68°.
NGC1023 will be visible until April, 1, when it will move too close to the Sun. During this time, its proximity to the Sun will cause it to disappear from the night sky, making it unobservable for a while.

NGC1023 Visibility Timetable on September 17

NGC1023 Rise and Set Timetable

TimeElevation
Moon Rise, 29.5% illuminated23:1657°
Moon Set14:45-13°
NGC1023 rise17:29
Civil sunset17:391°
Astrosession begin18:4110°
NGC1023 transit02:0188°
Astrosession end03:2374°
Civil sunrise04:2562°
Sunrise04:5357°
NGC1023 set10:33

Track NGC1023 Position Throughout the Night

← Wed, 17 September 2025 →

Elevation (degrees)
Time
Altitude
Azimuth
Shift the map to change the time and observe NGC1023 changing position in the night sky.

Where is NGC1023 right now?

NGC1023 is located in the constellation Perseus, at right ascension 02h 40m 24s" and declination 39° 03' 47s. Although it is currently above the horizon at an altitude of 48 degrees, NGC1023 is not visible because it is daytime.

NGC1023 Image Gallery

DSS Blue

NGC1023 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

NGC1023 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

NGC1023 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

NGC1023 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 NGC1023

Double-click to unlock the map.
Object nameNGC1023
Field of view
Limiting magnitude
NGC1023 coordinates2.67334, 39.06328
Center coordinates2.67334, 39.06328

NGC1023 Passage Through Night

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Current position of NGC1023

Time05:41
Latitude37.3541
Longitude-121.955
NGC1023 elevation48°
NGC1023 Azimuth70°
Here you can see the current position of the NGC1023 on the map, as well as its positions for rise and set. This tool allows you to track the NGC1023's movement throughout the night, providing you with accurate and up-to-date information.

Annual motion of NGC1023

Time
DateWed, 17 September 2025
Twighlight start18:36
Twighlight end03:17
Twighlight duration9h 40m
Rise17:29
Set10:33
Elevation at transit88°
Transit time02:01
Equatorial coordinatesRA: 02h 40m 24s", Dec: 39° 03' 47s
Magnitude9
ConstellationPerseus
The graph illustrates the annual visibility pattern of a NGC1023, 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 NGC1023 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.

Astrometric & Physical Parameters of NGC1023

Coordinates & Visibility

Right Ascension2.67334°
Declination39.06328°
Magnitude9.47
ConstellationPerseus
Elevation48°
Azimuth70.3°

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.