Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 5:57  ☀️ Transit: 12:05  🌅 Sunset: 18:14


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:

HR7998 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 13°.

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:

20h 53m 58s
-06° 53’ 22”

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

Finder chart HR7998 star
Simplified finder chart for HR7998.

Visibility of HR7998 from your location

Location: Greenwich, United Kingdom [change]
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 [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 96.9°
Max altitude: 31.6°
Azimuth: 263.1°
HR7998 is above the horizon from Greenwich, United Kingdom

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.

Image of HR7998 star
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.

70.52 pc
229.90 ly
-8 km/s
0.033 arcsec/year
-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.


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

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

Alternative designations of HR7998