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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:57  
clear_day Transit: 12:11  
SunsetSet: 17:27
sunny DaytimeWhat's Visible Now?
All Constellations » Microscopium » 


Altitude: 7.7°   Azimuth: 201.8°   Direction: South-South-West

HR7997 is a giant star in the constellation of Microscopium.

HR7997 visual magnitude is 6.41. Because of its reltive faintness, HR7997 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR7997 is 0.027 arcsec per year in Right Ascension and -0.025 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7997 star
DSS2 image of HR7997. The red arrow shows the motion of HR7997 during the next 10000 years (4.50 arcmin in Right Ascension and -4.17 arcmin in declination);

Key facts about HR7997


HR7997 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 7.7°
Azimuth: 201.8°
Direction: South-South-West

Celestial coordinates and finder chart of HR7997

HR7997 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR7997 are provided in the following table:

20h 54m 06s
-27° 55’ 32”

The simplified sky map below shows the position of HR7997 in the sky:

Finder chart HR7997 star
Simplified finder chart for HR7997.

Visibility of HR7997 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 HR7997 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: 117.9°
Max altitude: 10.6°
Azimuth: 242.1°

Distance of HR7997 from the Sun and relative movement

HR7997 is distant 956.01 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

293.26 pc
956.01 ly
25 km/s
0.027 arcsec/year
-0.025 arcsec/year

Spectral properties of HR7997

HR7997 belongs to spectral class M4 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR7997 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR7997. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7997