HR8978

HR8978 is a variable giant star in the constellation of Aquarius.

HR8978 visual magnitude is 6.6. Because of its reltive faintness, HR8978 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 HR8978:

Color of HR8978 ⬤

Magnitude of HR8978 6.6

Class Giant

VISIBILITY RIGHT NOW HR8978 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 14°.

Celestial coordinates and finder chart of HR8978

HR8978 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 HR8978 are provided in the following table:

Right Ascension J2000 23h 41m 07s

Declination J2000 -24° 09’ 37”

Galactic Longitude 39.63°

Galactic Latitude -73.89°

Constellation Aquarius

The simplified sky map below shows the position of HR8978 in the sky:

Simplified finder chart for HR8978.

Visibility of HR8978 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 HR8978 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: 114.2° RISE 4:33

Max altitude: 14.4° TRANSIT 8:14

Azimuth: 245.8° SET 11:56

RIGHT NOW HR8978 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR8978

The image below is a photograph of HR8978 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 HR8978 is 0.006 arcsec per year in Right Ascension and -0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR8978. The red arrow shows the motion of HR8978 during the next 10000 years (1.00 arcmin in Right Ascension and -1.67 arcmin in declination);

Distance of HR8978 from the Sun and relative movement

HR8978 is distant 831.63 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

Distance (parsec) 255.10 pc

Distance (light year) 831.63 ly

Heliocentric radial velocity 18 km/s

Proper Motion RA 0.006 arcsec/year

Proper Motion Dec -0.01 arcsec/year

Spectral properties of HR8978

HR8978 belongs to spectral class M1 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.43

Spectral Type M1III

Color Index (B-V) 1.57

Temperature of HR8978 3691K

The red dot in the diagram below shows where HR8978 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR8978. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR8978

Henry Draper Catalogue HD222485

SAO Catalogue SAO192083

Hipparcos Catalogue HIP116851

Durchmusterung Catalogue CD-2417796

General Catalogue of Variable Stars 14665

In Evidence

Other stars in Aquarius