Your guide to the Solar System and the night sky
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🌎  Greenwich, United Kingdom [change]

HR2105

HR2105 is a hypergiant star in the constellation of Auriga.

HR2105 visual magnitude is 5.96. Because of its reltive faintness, HR2105 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 HR2105:

5.96
Hypergiant
HR2105 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 16°.

Celestial coordinates and finder chart of HR2105

HR2105 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 HR2105 are provided in the following table:

06h 01m 43s
+48° 57’ 33”
164.01°
12.6°
Auriga

The simplified sky map below shows the position of HR2105 in the sky:

Finder chart HR2105 star
Simplified finder chart for HR2105.

Visibility of HR2105 from your location

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

HR2105 is circumpolar and transits at 05:06 UTC (altitude: 87.5°)

Digitized Sky Survey image of HR2105

The image below is a photograph of HR2105 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 HR2105 is 0.005 arcsec per year in Right Ascension and -0.015 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2105 star
DSS2 image of HR2105. The red arrow shows the motion of HR2105 during the next 10000 years (0.83 arcmin in Right Ascension and -2.50 arcmin in declination);

Distance of HR2105 from the Sun and relative movement

HR2105 is distant 686.32 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

210.53 pc
686.32 ly
11 km/s
0.005 arcsec/year
-0.015 arcsec/year

Spectral properties of HR2105

HR2105 belongs to spectral class K0

-0.66
K0
3870K

The red dot in the diagram below shows where HR2105 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2105. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2105

SAO40789
SAO40789