HR8816

HR8816 is a hypergiant star in the constellation of Aquarius.

HR8816 visual magnitude is 6.42. Because of its reltive faintness, HR8816 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 HR8816:

Color of HR8816 ⬤

Magnitude of HR8816 6.42

Class Hypergiant

VISIBILITY RIGHT NOW HR8816 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR8816

HR8816 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR8816 are provided in the following table:

Right Ascension J2000 23h 09m 49s

Declination J2000 -14° 30’ 38”

Galactic Longitude 55.87°

Galactic Latitude -63.19°

Constellation Aquarius

The simplified sky map below shows the position of HR8816 in the sky:

Simplified finder chart for HR8816.

Visibility of HR8816 from your location

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

Today's HR8816 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 104.5° RISE 7:04

Max altitude: 24.0° TRANSIT 11:47

Azimuth: 255.5° SET 16:29

RIGHT NOW HR8816 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR8816

The image below is a photograph of HR8816 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 HR8816 is 0.031 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR8816. The red arrow shows the motion of HR8816 during the next 10000 years (5.17 arcmin in Right Ascension and -1.50 arcmin in declination);

Distance of HR8816 from the Sun and relative movement

HR8816 is distant 344.97 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

Distance (parsec) 105.82 pc

Distance (light year) 344.97 ly

Heliocentric radial velocity 15 km/s

Proper Motion RA 0.031 arcsec/year

Proper Motion Dec -0.009 arcsec/year

Spectral properties of HR8816

HR8816 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude 1.30

Spectral Type A0V

Color Index (B-V) 0.01

Temperature of HR8816 10002K

The red dot in the diagram below shows where HR8816 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8816. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8816

Henry Draper Catalogue HD218639

SAO Catalogue SAO165522

Hipparcos Catalogue HIP114371

Durchmusterung Catalogue BD-15 6360

FK5 Catalogue 3856

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Other stars in Aquarius