HR7998

Altitude: 31.5° Azimuth: 186.1° Direction: South

HR7998 is a sub-giant star in the constellation of Aquarius.

HR7998 visual magnitude is 6.44. Because of its reltive faintness, HR7998 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 HR7998:

Color of HR7998 ⬤

Magnitude of HR7998 6.44

Class Sub-giant

VISIBILITY RIGHT NOW

HR7998 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 31.5°
Azimuth: 186.1°
Direction: South

Celestial coordinates and finder chart of HR7998

HR7998 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 HR7998 are provided in the following table:

Right Ascension J2000 20h 53m 58s

Declination J2000 -06° 53’ 22”

Galactic Longitude 41.19°

Galactic Latitude -30.33°

Constellation Aquarius

The simplified sky map below shows the position of HR7998 in the sky:

Simplified finder chart for HR7998.

Visibility of HR7998 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 HR7998 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: 96.9° RISE 10:10

Max altitude: 31.6° TRANSIT 15:33

Azimuth: 263.1° SET 20:56

Digitized Sky Survey image of HR7998

The image below is a photograph of HR7998 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 HR7998 is 0.033 arcsec per year in Right Ascension and -0.027 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR7998. The red arrow shows the motion of HR7998 during the next 10000 years (5.50 arcmin in Right Ascension and -4.50 arcmin in declination);

Distance of HR7998 from the Sun and relative movement

HR7998 is distant 229.90 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 70.52 pc

Distance (light year) 229.90 ly

Heliocentric radial velocity -8 km/s

Proper Motion RA 0.033 arcsec/year

Proper Motion Dec -0.027 arcsec/year

Spectral properties of HR7998

HR7998 belongs to spectral class F1 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 2.20

Spectral Type F1IV

Color Index (B-V) 0.37

Temperature of HR7998 7044K

The red dot in the diagram below shows where HR7998 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR7998. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7998

Henry Draper Catalogue HD198949

SAO Catalogue SAO144915

Hipparcos Catalogue HIP103154

Durchmusterung Catalogue BD-07 5433

Support us

In Evidence

Other stars in Aquarius