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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
SunriseRise: 6:04  
clear_day Transit: 12:06  
SunsetSet: 18:09
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All Constellations » Ursa Major » 

HR4051

Altitude: 56.6°   Azimuth: 296.6°   Direction: West-North-West

HR4051 is a main-sequence star in the constellation of Ursa Major.

HR4051 visual magnitude is 6.45. Because of its reltive faintness, HR4051 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR4051 is -0.084 arcsec per year in Right Ascension and 0.046 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4051 star
DSS2 image of HR4051. The red arrow shows the motion of HR4051 during the next 10000 years (-14.00 arcmin in Right Ascension and 7.67 arcmin in declination);

Key facts about HR4051

6.45
Main-sequence

HR4051 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 56.6°
Azimuth: 296.6°
Direction: West-North-West

Celestial coordinates and finder chart of HR4051

HR4051 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 HR4051 are provided in the following table:

10h 20m 14s
+53° 46’ 45”
158.57°
51.58°
Ursa Major

The simplified sky map below shows the position of HR4051 in the sky:

Finder chart HR4051 star
Simplified finder chart for HR4051.

Visibility of HR4051 from your location

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

HR4051 is circumpolar and transits at 22:28 UTC (altitude: 87.7°)

Distance of HR4051 from the Sun and relative movement

HR4051 is distant 99.69 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

30.58 pc
99.69 ly
-21 km/s
-0.084 arcsec/year
0.046 arcsec/year

Spectral properties of HR4051

HR4051 belongs to spectral class F9 and has a luminosity class of V corresponding to a main-sequence star.

4.02
F9V
6213K

The red dot in the diagram below shows where HR4051 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4051. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4051

SAO27606
SAO27606