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Sky-Tonight.com / Double Stars / 21446+2539 Star System
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Observation Settings

Or select it on the map:
This Earth map fragment is intended to illustrate celestial motion across the sky, emphasizing both bearing and elevational perspectives. The map's center point corresponds to the transit, showcasing celestial objects at their highest point, while elevation gradually decreases towards the map edges. This dynamic representation offers insights into the changing positions of celestial bodies with a focus on their bearing and elevational trajectories.
Your location: Columbus, United States
Timezone:
Latitude:
39.9625
Longitude:
-83.0061

Double Star 21446+2539 Observation Details

21446+2539

21446+2539 Daily Motion


21446+2539 will be visible until January, 26, 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.

21446+2539 Visibility Timetable on June 13

21446+2539 Rise and Set Timetable

TimeElevation
21446+2539 rise22:15
Moon Rise, 96.7% illuminated22:465°
Astrosession begin23:038°
Astrosession end04:0063°
Civil sunrise05:2975°
21446+2539 transit05:4876°
Sunrise06:0475°
Moon Set07:4262°
21446+2539 set13:22

Track 21446+2539 Position Throughout the Night

← Fri, 13 June 2025 →

Elevation (degrees)
Time06:58
Altitude52°
Azimuth-99°
Shift the map to change the time and observe 21446+2539 changing position in the night sky.

21446+2539 Star System Description

21446+2539 is Triple Star System located in constellation Pegasus at coordinates RA: 21h 44m 38s", Dec: 25° 38' 42s.
The primary component has a magnitude of 4.94, while the secondary component has a magnitude of 5.04. They are separated by 0.3 arcseconds at a position angle of 138 degrees. The brightness difference between the two components is 0.1 magnitudes, with the primary component being approximately 1.1 times brighter than the secondary.
Below is a table with star system details from the Washington Double Star (WDS) Catalog. This catalog is a comprehensive source of information on double and multiple star systems, providing key data on the positions, magnitudes, and separations of stellar components.

Technical Details of Star System 21446+2539

Property Value
Star System Identifier 21446+2539
System Type Triple Star System
Primary Star kap Peg
Right Ascension (RA) 21.74408 (21h 44m 38s")
Declination (Dec) 25.645 (25° 38' 42s)
Magnitude (Primary) 4.94
Magnitude (Secondary) 5.04
Spectral Type (Primary/Secondary) F5V
Separation (Arcseconds) 0.3
Position Angle 138°
Discovery Year 1880
Last Observed 2019
Primary Proper Motion (Ra, Dec) +048+014
Secondary Proper Motion (Ra, Dec)
Number of Observations 450

21446+2539 Components

ComponentMagnitudeSeparation (arcseconds)Position Angle
AB5.040.3138
AB,C10.89.5307

The data presented in this table is sourced from the Washington Double Star (WDS) Catalog, a comprehensive repository of double and multiple star system information maintained by the U.S. Naval Observatory. We thank the WDS team for their continued efforts in providing accurate and detailed astronomical data.

Finder Chart for kap Peg

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Object name21446+2539
Field of view
Limiting magnitude
21446+2539 coordinates21.74408, 25.645
Center coordinates21.74408, 25.645

21446+2539 Passage Through Night

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Current position of 21446+2539

Time02:58
Latitude39.9625
Longitude-83.0061
21446+2539 elevation52°
21446+2539 Azimuth-99°
Here you can see the current position of the 21446+2539 on the map, as well as its positions for rise and set. This tool allows you to track the 21446+2539's movement throughout the night, providing you with accurate and up-to-date information.

Annual motion of 21446+2539

Time
DateSat, 14 June 2025
Twighlight start23:00
Twighlight end03:54
Twighlight duration5h 55m
Rise22:11
Set13:18
Elevation at transit76°
Transit time05:44
Equatorial coordinatesRA: 21h 44m 38s", Dec: 25° 38' 42s
Magnitude5
ConstellationPegasus
The graph illustrates the annual visibility pattern of a 21446+2539, 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 21446+2539 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.