HR7888

Altitude: 24.3° Azimuth: 58.4° Direction: East-North-East

HR7888 is a hypergiant star in the constellation of Cygnus.

HR7888 visual magnitude is 6.2. Because of its reltive faintness, HR7888 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 HR7888:

Color of HR7888 ⬤

Magnitude of HR7888 6.2

Class Hypergiant

VISIBILITY RIGHT NOW

HR7888 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 24.3°
Azimuth: 58.4°
Direction: East-North-East

Celestial coordinates and finder chart of HR7888

HR7888 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 HR7888 are provided in the following table:

Right Ascension J2000 20h 37m 23s

Declination J2000 +38° 19’ 42”

Galactic Longitude 78.31°

Galactic Latitude -1.64°

Constellation Cygnus

The simplified sky map below shows the position of HR7888 in the sky:

Simplified finder chart for HR7888.

Visibility of HR7888 from your location

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

Today's HR7888 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 51.7° RISE 9:15

Max altitude: 76.8° TRANSIT 20:44

Azimuth: 308.3° SET 8:17

Digitized Sky Survey image of HR7888

The image below is a photograph of HR7888 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 HR7888 is 0.01 arcsec per year in Right Ascension and -0.043 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7888. The red arrow shows the motion of HR7888 during the next 10000 years (1.67 arcmin in Right Ascension and -7.17 arcmin in declination);

Distance of HR7888 from the Sun and relative movement

HR7888 is distant 328.30 light years from the Sun and it is moving towards the Sun at the speed of 37 kilometers per second.

Distance (parsec) 100.70 pc

Distance (light year) 328.30 ly

Heliocentric radial velocity -37 km/s

Proper Motion RA 0.01 arcsec/year

Proper Motion Dec -0.043 arcsec/year

Spectral properties of HR7888

HR7888 belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 1.18

Spectral Type K0III

Color Index (B-V) 0.99

Temperature of HR7888 4767K

The red dot in the diagram below shows where HR7888 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7888. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7888

Henry Draper Catalogue HD196642

SAO Catalogue SAO70288

Hipparcos Catalogue HIP101756

Durchmusterung Catalogue BD+37 4002

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In Evidence

Other stars in Cygnus