HR8407

Altitude: 50.5° Azimuth: 75.5° Direction: East-North-East

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

HR8407 visual magnitude is 5.6. Because of its reltive faintness, HR8407 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR8407:

Color of HR8407 ⬤

Magnitude of HR8407 5.6

Class Hypergiant

VISIBILITY RIGHT NOW

HR8407 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 50.5°
Azimuth: 75.5°
Direction: East-North-East

Celestial coordinates and finder chart of HR8407

HR8407 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8407 are provided in the following table:

Right Ascension J2000 22h 02m 56s

Declination J2000 +44° 38’ 59”

Galactic Longitude 94.08°

Galactic Latitude -8.58°

Constellation Cygnus

The simplified sky map below shows the position of HR8407 in the sky:

Simplified finder chart for HR8407.

Visibility of HR8407 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR8407 is circumpolar and transits at 04:53 UTC (altitude: 83.2°)

Digitized Sky Survey image of HR8407

The image below is a photograph of HR8407 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR8407 is -0.018 arcsec per year in Right Ascension and -0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

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);

Distance of HR8407 from the Sun and relative movement

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 pc

Distance (light year) 529.22 ly

Heliocentric radial velocity -1 km/s

Proper Motion RA -0.018 arcsec/year

Proper Motion Dec -0.033 arcsec/year

Spectral properties of HR8407

HR8407 belongs to spectral class A0 and has a luminosity class of IV corresponding to a hypergiant star.

Absolute magnitude -0.45

Spectral Type A0IV

Color Index (B-V) -0.03

Temperature of HR8407 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

HR8407 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

Alternative designations of HR8407

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

In Evidence

Other stars in Cygnus