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public LocationGreenwich, United Kingdom
Sunrise: 4:42 
Transit: 12:58 
Sunset: 21:15
sunny   (Daytime)   What's Visible Now?


Above the horizon.  Rise: 7:26 | Tran: 13:02 | Set: 18:38
Altitude: 34.1°   Azimuth: 179.9°   Direction: South

HR1891 is a double main-sequence star of spectral class B2 in the constellation of Orion.

HR1891 visual magnitude is 6.24. Because of its faintness, HR1891 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of HR1891

Finder chart HR1891 star
Simplified finder chart for HR1891.

HR1891 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 HR1891 are provided in the following table:

05h 35m 22s
-04° 25’ 31”
Image of HR1891 star
DSS2 image of HR1891. The red arrow shows the motion of HR1891 during the next 10000 years (3.67 arcmin in Right Ascension and -4.50 arcmin in declination);

Key facts about HR1891


and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1891 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1891. Attribution: Richard Powell / CC BY-SA

HR1891 star system properties

HR1891 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR1891 double sysyem:

0.2 arcsec

Distance of HR1891 from the Sun and relative movement

HR1891 is distant 1,128.03 light years from the Sun and it is moving far from the Sun at the speed of 31 kilometers per second.

346.02 pc
1,128.03 ly
31 km/s
0.022 arcsec/year
-0.027 arcsec/year

Alternative designations of HR1891


Visibility of HR1891 from your location

Today's HR1891 rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):

Azimuth: 94.4°
Max altitude: 34.1°
Azimuth: 265.6°