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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: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sleep NighttimeWhat's Visible Now?
All Constellations » Ursa Major » 


Altitude: 37.7°   Azimuth: 49.6°   Direction: North-East

HR3405 is a hypergiant star in the constellation of Ursa Major.

HR3405 visual magnitude is 6.42. Because of its reltive faintness, HR3405 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 HR3405:


HR3405 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 37.7°
Azimuth: 49.6°
Direction: North-East

Celestial coordinates and finder chart of HR3405

HR3405 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 HR3405 are provided in the following table:

08h 39m 00s
+52° 55’ 29”
Ursa Major

The simplified sky map below shows the position of HR3405 in the sky:

Finder chart HR3405 star
Simplified finder chart for HR3405.

Visibility of HR3405 from your location

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

HR3405 is circumpolar and transits at 03:44 UTC (altitude: 88.6°)

Digitized Sky Survey image of HR3405

The image below is a photograph of HR3405 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 HR3405 is -0.022 arcsec per year in Right Ascension and -0.032 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3405 star
DSS2 image of HR3405. The red arrow shows the motion of HR3405 during the next 10000 years (-3.67 arcmin in Right Ascension and -5.33 arcmin in declination);

Distance of HR3405 from the Sun and relative movement

HR3405 is distant 581.11 light years from the Sun and it is moving far from the Sun at the speed of 39 kilometers per second.

178.25 pc
581.11 ly
39 km/s
-0.022 arcsec/year
-0.032 arcsec/year

Spectral properties of HR3405

HR3405 belongs to spectral class K0


The red dot in the diagram below shows where HR3405 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3405. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3405