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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
north SunriseRise: 7:50  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Orion » 


Altitude: 15.3°   Azimuth: 118.3°   Direction: East-South-East

HR1890 is a variable main-sequence star in the constellation of Orion.

HR1890 visual magnitude is 6.56. Because of its reltive faintness, HR1890 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 HR1890:


HR1890 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 15.3°
Azimuth: 118.3°
Direction: East-South-East

Celestial coordinates and finder chart of HR1890

HR1890 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 HR1890 are provided in the following table:

05h 35m 21s
-04° 29’ 35”

The simplified sky map below shows the position of HR1890 in the sky:

Finder chart HR1890 star
Simplified finder chart for HR1890.

Visibility of HR1890 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 HR1890 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: 94.5°
Max altitude: 34.0°
Azimuth: 265.5°

Digitized Sky Survey image of HR1890

The image below is a photograph of HR1890 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 HR1890 is -0.011 arcsec per year in Right Ascension and 0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1890 star
DSS2 image of HR1890. The red arrow shows the motion of HR1890 during the next 10000 years (-1.83 arcmin in Right Ascension and 5.00 arcmin in declination);

Distance of HR1890 from the Sun and relative movement

HR1890 is distant 1,216.42 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

373.13 pc
1,216.42 ly
29 km/s
-0.011 arcsec/year
0.03 arcsec/year

Spectral properties of HR1890

HR1890 belongs to spectral class B1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1890 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1890. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1890