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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: 7:54  
clear_day Transit: 11:51  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Andromeda » 


Altitude: 10.5°   Azimuth: 24.5°   Direction: North-North-East

HR104 is a main-sequence star in the constellation of Andromeda.

HR104 visual magnitude is 5.17. Because of its reltive faintness, HR104 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 HR104:


HR104 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 10.5°
Azimuth: 24.5°
Direction: North-North-East

Celestial coordinates and finder chart of HR104

HR104 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 HR104 are provided in the following table:

00h 28m 13s
+44° 23’ 39”

The simplified sky map below shows the position of HR104 in the sky:

Finder chart HR104 star
Simplified finder chart for HR104.

Visibility of HR104 from your location

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

HR104 is circumpolar and transits at 19:07 UTC (altitude: 82.9°)

Digitized Sky Survey image of HR104

The image below is a photograph of HR104 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 HR104 is 0.089 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR104 star
DSS2 image of HR104. The red arrow shows the motion of HR104 during the next 10000 years (14.83 arcmin in Right Ascension and -2.67 arcmin in declination);

Distance of HR104 from the Sun and relative movement

HR104 is distant 264.61 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

81.17 pc
264.61 ly
2 km/s
0.089 arcsec/year
-0.016 arcsec/year

Spectral properties of HR104

HR104 belongs to spectral class A2 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR104 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR104. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR104