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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: 6:59  
clear_day Transit: 12:12  
SunsetSet: 17:25
sleep NighttimeWhat's Visible Now?
All Constellations » Orion » 


Altitude: -17.4°   Azimuth: 300.8°   Direction: West-North-West

HR1978 is a multiple giant star in the constellation of Orion.

HR1978 visual magnitude is 6.09. Because of its reltive faintness, HR1978 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 HR1978 is 0.02 arcsec per year in Right Ascension and -0.019 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1978 star
DSS2 image of HR1978. The red arrow shows the motion of HR1978 during the next 10000 years (3.33 arcmin in Right Ascension and -3.17 arcmin in declination);

Key facts about HR1978


HR1978 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -17.4°
Azimuth: 300.8°
Direction: West-North-West

Celestial coordinates and finder chart of HR1978

HR1978 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 HR1978 are provided in the following table:

05h 45m 01s
+04° 00’ 29”

The simplified sky map below shows the position of HR1978 in the sky:

Finder chart HR1978 star
Simplified finder chart for HR1978.

Visibility of HR1978 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 HR1978 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: 86.0°
Max altitude: 42.5°
Azimuth: 274.0°

Distance of HR1978 from the Sun and relative movement

HR1978 is distant 164.73 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

50.53 pc
164.73 ly
8 km/s
0.02 arcsec/year
-0.019 arcsec/year

Spectral properties of HR1978

HR1978 belongs to spectral class F0


The red dot in the diagram below shows where HR1978 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1978. Attribution: Richard Powell / CC BY-SA

HR1978 star system properties

HR1978 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR1978 double sysyem:

15.7 arcsec

Alternative designations of HR1978