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Sky-Tonight.com / Double Stars / 12289+2555 Star System
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Observation Settings

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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: Ashburn, United States
Timezone:
Latitude:
39.0469
Longitude:
-77.4903

Double Star 12289+2555 Observation Details

12289+2555

12289+2555 Daily Motion

12289+2555 will rise before twilight begins, at 14:11, and will reach 77° elevation by the time twilight commences at 21:29. It will reach its transit at 77° by 21:43 and gradually fade away as the night ends at 04:43, maintaining an elevation of around 5°.
12289+2555 will be visible until August, 8, 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.

12289+2555 Visibility Timetable on May 21

12289+2555 Rise and Set Timetable

TimeElevation
12289+2555 rise14:11
Sunset20:1968°
Civil sunset20:5173°
12289+2555 transit21:4377°
Astrosession begin22:1176°
Moon Rise, 41.7% illuminated02:3129°
Astrosession end04:0113°
12289+2555 set05:14
Moon Set14:05-0°

Track 12289+2555 Position Throughout the Night

← Wed, 21 May 2025 →

Elevation (degrees)
Time
Altitude
Azimuth
Shift the map to change the time and observe 12289+2555 changing position in the night sky.

12289+2555 Star System Description

12289+2555 is 7-star Star System located in constellation Coma Berenices at coordinates RA: 12h 28m 54s", Dec: 25° 54' 46s.
The primary component has a magnitude of 5.23, while the secondary component has a magnitude of 6.64. They are separated by 2.4 arcminutes at a position angle of 251 degrees. The brightness difference between the two components is 1.41 magnitudes, with the primary component being approximately 3.7 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 12289+2555

Property Value
Star System Identifier 12289+2555
System Type 7-star Star System
Primary Star AI Com
Right Ascension (RA) 12.48186 (12h 28m 54s")
Declination (Dec) 25.91289 (25° 54' 46s)
Magnitude (Primary) 5.23
Magnitude (Secondary) 6.64
Spectral Type (Primary/Secondary) A0p
Separation (Arcseconds) 145.3
Position Angle 251°
Discovery Year 1836
Last Observed 2018
Primary Proper Motion (Ra, Dec) -022-016
Secondary Proper Motion (Ra, Dec) -020-016
Number of Observations 49

12289+2555 Components

ComponentMagnitudeSeparation (arcseconds)Position Angle
AB6.64145.3251
AD11.63326.0270
AE13.60446.7270
AF13.92126.0145
BC13.71.8157
BD11.63194.4285

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 AI Com

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Object name12289+2555
Field of view
Limiting magnitude
12289+2555 coordinates12.48186, 25.91289
Center coordinates12.48186, 25.91289

12289+2555 Passage Through Night

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Current position of 12289+2555

Time09:44
Latitude39.0469
Longitude-77.4903
12289+2555 elevation-25°
12289+2555 Azimuth0°
Here you can see the current position of the 12289+2555 on the map, as well as its positions for rise and set. This tool allows you to track the 12289+2555's movement throughout the night, providing you with accurate and up-to-date information.

Annual motion of 12289+2555

Time
DateWed, 21 May 2025
Twighlight start22:07
Twighlight end03:56
Twighlight duration6h 49m
Rise14:07
Set05:10
Elevation at transit77°
Transit time21:39
Equatorial coordinatesRA: 12h 28m 54s", Dec: 25° 54' 46s
Magnitude5
ConstellationComa Berenices
The graph illustrates the annual visibility pattern of a 12289+2555, 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 12289+2555 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.