Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

HR8921

HR8921 is a hypergiant star in the constellation of Aquarius.

HR8921 visual magnitude is 6.18. Because of its reltive faintness, HR8921 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 HR8921:

6.18
Hypergiant
HR8921 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR8921

HR8921 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 HR8921 are provided in the following table:

23h 29m 00s
-09° 15’ 57”
71.6°
-63.59°
Aquarius

The simplified sky map below shows the position of HR8921 in the sky:

Finder chart HR8921 star
Simplified finder chart for HR8921.

Visibility of HR8921 from your location

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

Today's HR8921 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 99.3°
Max altitude: 29.3°
Azimuth: 260.7°
HR8921 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR8921

The image below is a photograph of HR8921 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 HR8921 is -0.05 arcsec per year in Right Ascension and -0.026 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR8921 star
DSS2 image of HR8921. The red arrow shows the motion of HR8921 during the next 10000 years (-8.33 arcmin in Right Ascension and -4.33 arcmin in declination);

Distance of HR8921 from the Sun and relative movement

HR8921 is distant 2,202.70 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

675.68 pc
2,202.70 ly
8 km/s
-0.05 arcsec/year
-0.026 arcsec/year

Spectral properties of HR8921

HR8921 belongs to spectral class K0

-2.97
K0
3886K

The red dot in the diagram below shows where HR8921 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR8921. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8921

SAO146729
SAO146729