Your Guide to the Solar System and the Night Sky
Donate now! You'll help cover server costs, enhance the site and keep it ad-free.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:44  
clear_day Transit: 12:57  
SunsetSet: 21:11 south
wb_twilight Nautical TwilightWhat's Visible Now
All Constellations » Orion » 


Altitude: -35.1°   Azimuth: 34.4°   Direction: North-East

HR1863 is a variable and multiple main-sequence star in the constellation of Orion.

HR1863 visual magnitude is 6.46. Because of its reltive faintness, HR1863 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 HR1863:


HR1863 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -35.1°
Azimuth: 34.4°
Direction: North-East

Celestial coordinates and finder chart of HR1863

HR1863 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 HR1863 are provided in the following table:

05h 33m 07s
-01° 43’ 05”

The simplified sky map below shows the position of HR1863 in the sky:

Finder chart HR1863 star
Simplified finder chart for HR1863.

Visibility of HR1863 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 HR1863 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: 91.7°
Max altitude: 36.8°
Azimuth: 268.3°
HR1863 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1863

The image below is a photograph of HR1863 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 HR1863 is -0.025 arcsec per year in Right Ascension and -0.04 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1863 star
DSS2 image of HR1863. The red arrow shows the motion of HR1863 during the next 10000 years (-4.17 arcmin in Right Ascension and -6.67 arcmin in declination);

Distance of HR1863 from the Sun and relative movement

HR1863 is distant 2,762.71 light years from the Sun and it is moving far from the Sun at the speed of 37 kilometers per second.

847.46 pc
2,762.71 ly
37 km/s
-0.025 arcsec/year
-0.04 arcsec/year

Spectral properties of HR1863

HR1863 belongs to spectral class B4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1863 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1863. Attribution: Richard Powell / CC BY-SA

HR1863 star system properties

HR1863 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR1863 double sysyem:

1.5 arcsec

Alternative designations of HR1863