HR8407

Above the horizon. Circumpolar today

Alt: 69.15° Az: 96.96° Direction: East

HR8407 is a variable and multiple hypergiant star of spectral class A0 in the constellation of Cygnus.

HR8407 visual magnitude is 5.6. Because of its faintness, HR8407 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of HR8407. The red arrow shows the motion of HR8407 during the next 10000 years (-3.00 arcmin in Right Ascension and -5.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 03m 57s

Declination +44° 46’ 19”

Hour Angle 22h 00m 36s

Sidereal Time 20h 04m 34s

J2000

Right Ascension 22h 02m 56s

Declination +44° 38’ 59”

Galactic Coordinates

Galactic Longitude 94.08°

Galactic Latitude -8.58°

Finder Chart

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Finder chart for HR8407.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.6

Class Hypergiant

Absolute magnitude -0.45

Spectral Type A0IV

Color Index (B-V) -0.03

Temperature 10516K

The red dot in the diagram below shows where HR8407 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8407. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR8407 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR8407 double sysyem:

Main star magnitude 5.6

Secondary star magnitude 8.1

Magnitude difference 2.5

Separation 1 arcsec

Distance, Radial Speed, Proper Motion

HR8407 is distant 529.22 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

Distance (parsec) 162.34

Distance (light year) 529.22

Radial Speed -1 km/s

Proper Motion RA -0.018 arcsec/y

Proper Motion Dec -0.033"/y

Alternative Designations

Henry Draper Catalogue HD209515

SAO Catalogue SAO51595

Hipparcos Catalogue HIP108845

Durchmusterung Catalogue BD+43 4119

General Catalogue of Variable Stars V1942 Cyg

Aitken Double Star Catalogue ADS15578

Visibility from Your Location

HR8407 is circumpolar and transits at 12:32 UTC (altitude: 83.3°)

Set Location

Other stars in Cygnus