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Sky-Tonight.com/Double stars/79 Cyg
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Observation Settings

Or select it on the map:
This Earth map lets you select the observer’s location used to calculate the bearing and elevation of celestial objects. The selected point determines how the sky, rise and set times, and object positions are shown.
Your location: Singapore, Singapore
Timezone:
Latitude:
1.35208
Longitude:
103.82

79 Cyg Position and Visibility Tonight

21434+3817

Where is 79 Cyg right now?

79 Cyg is located in the constellation Cygnus. It is currently below the horizon and is not visible from your location.
Twilight begins at 19:36 local time. At that moment, 79 Cyg will be 52° above the horizon toward the north-east.
Open the interactive guide to 79 Cyg’s position and path tonight

79 Cyg visibility on 2026-10-29

79 Cyg Visible from sunset until early morning

79 Cyg rise and set timetable

TimeElevation
79 Cyg rise14:13
Sunset18:4948°
Civil sunset19:1150°
Twilight start (−12°)19:3652°
Astronomical observing session begins20:0153°
79 Cyg transit20:1653°
Moonrise, 89% illuminated 21:5646°
79 Cyg set02:20
Astronomical observing session ends05:35-36°
Moonset10:35-39°

Track 79 Cyg position throughout the night

← 29 October 2026 →

Elevation (degrees)
Time
Altitude
Azimuth
Shift the map to change the time and observe 79 Cyg changing position in the night sky.

Star system description: 79 Cyg

A double or multiple star system in Cygnus.

Pair AB (149.5″; magnitudes 5.69 and 7.00) is the binocular candidate in the catalog model. Actual resolution depends on magnification and stability.

The diagram uses the latest WDS measurements; north is up and east is right. Measurements may be from different years. Unconnected groups are arranged separately; close pairs may merge, and pairs without reliable geometry are omitted.

Technical details: 79 Cyg

PropertyValue
System identifierWDS 21434+3817
Bayer / Flamsteed designation79 Cyg
ConstellationCygnus
System typemultiple star system
Right ascension (RA)21h 43m 25s"
Declination (Dec)38° 17' 00s
ComponentAB
Primary magnitude5.69
Secondary magnitude7.00
Separation (arcseconds)149.5″
Position angle60°
Discovery year1824
Last observed2015
Spectral type (primary/secondary)A0V
Number of observations37

5 components are identified in WDS; this is not a count of resolved stars.

Components of 79 Cyg

Each row is a separate WDS component pair. Measurements may come from different years.

ComponentPrimary magnitudeSecondary magnitudeSeparation (arcseconds)Position angleLast observed
AB (binoculars)5.697.00149.5″60°2015
Aa,Ab5.6911.101.9″142°2016
AC5.6910.24135.3″318°2011
BD6.9813.9034″254°2015

Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.

Finder Chart for 79 Cyg

Field of view 5.0°

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79 Cyg Passage Through Night

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Current position of 79 Cyg

Time11:27
Latitude1.35208
Longitude103.82
Elevation-31°
Azimuth42°
Here you can see the current position of 79 Cyg 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 79 Cyg Visible Throughout the Year?

79 Cyg will remain visible until December 27, when it moves too close to the Sun and temporarily disappears from the night sky. Time
DateFri, 30 October 2026
Astronomical observing session begins19:59
Astronomical observing session ends05:32
Astronomical observing duration10h 33m
Rise14:09
Set02:16
Elevation at transit53°
Transit time20:12
Equatorial coordinatesRA: 21h 43m 25s", Dec: 38° 17' 00s
Magnitude6
ConstellationCygnus
The graph illustrates the annual visibility pattern of 79 Cyg, 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 79 Cyg is visible throughout the year in a table with exact rise, transit, and set times for each date.

Astrometric and Physical Parameters of 79 Cyg

Coordinates and Visibility

Right Ascension21h 43m 26s
Declination38° 17′ 01″
Magnitude5.69
ConstellationCygnus
Elevation-31.2°
Azimuth42.4°