HR1891

Below the horizon. Rise: 9:02 | Tran: 14:38 | Set: 20:14

Alt: -17.26° Az: 285.13° Direction: West-North-West

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.

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);

Celestial Coordinates

Apparent

Right Ascension 05h 36m 37s

Declination -04° 24’ 37”

Hour Angle 07h 29m 34s

Sidereal Time 13h 06m 12s

J2000

Right Ascension 05h 35m 22s

Declination -04° 25’ 31”

Galactic Coordinates

Galactic Longitude 208.11°

Galactic Latitude -18.92°

Finder Chart

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Finder chart for HR1891.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.24

Class Main-sequence

Absolute magnitude -1.46

Spectral Type B2V

Color Index (B-V) -0.15

Temperature 12489K

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

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

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:

Main star magnitude 6.24

Secondary star magnitude 6.94

Magnitude difference 0.7

Separation 0.2 arcsec

Distance, Radial Speed, Proper Motion

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.

Distance (parsec) 346.02

Distance (light year) 1,128.03

Radial Speed 31 km/s

Proper Motion RA 0.022 arcsec/y

Proper Motion Dec -0.027"/y

Alternative Designations

Henry Draper Catalogue HD37016

SAO Catalogue SAO132319

Hipparcos Catalogue HIP26234

Durchmusterung Catalogue BD-04 1184

Visibility from Your Location

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

Azimuth: 94.4° RISE 9:02

Max altitude: 34.1° TRANSIT 14:38

Azimuth: 265.6° SET 20:14

Set Location

Other stars in Orion