Your Guide to the Solar System and the Night Sky
This site is free and ad-free thanks to the support of our users. If you can, please consider a donation.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:47  
clear_day Transit: 12:50  
SunsetSet: 18:52 south
sunny DaytimeWhat's Visible Now
All Constellations » Ursa Major » 


Altitude: 19.0°   Azimuth: 322.1°   Direction: North-West

HR3881 is a hypergiant star in the constellation of Ursa Major.

HR3881 visual magnitude is 5.09. Because of its reltive faintness, HR3881 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 HR3881:


HR3881 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 19.0°
Azimuth: 322.1°
Direction: North-West

Celestial coordinates and finder chart of HR3881

HR3881 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3881 are provided in the following table:

09h 48m 35s
+46° 01’ 15”
Ursa Major

The simplified sky map below shows the position of HR3881 in the sky:

Finder chart HR3881 star
Simplified finder chart for HR3881.

Visibility of HR3881 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR3881 is circumpolar and transits at 09:36 UTC (altitude: 84.5°)

Digitized Sky Survey image of HR3881

The image below is a photograph of HR3881 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 HR3881 is 0.224 arcsec per year in Right Ascension and -0.092 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR3881 star
DSS2 image of HR3881. The red arrow shows the motion of HR3881 during the next 1000 years (3.73 arcmin in Right Ascension and -1.53 arcmin in declination);

Distance of HR3881 from the Sun and relative movement

HR3881 is distant 60.08 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

18.43 pc
60.08 ly
5 km/s
0.224 arcsec/year
-0.092 arcsec/year

Spectral properties of HR3881

HR3881 belongs to spectral class G0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR3881 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3881. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3881