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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 » Eridanus » 


Altitude: -32.9°   Azimuth: 132.0°   Direction: South-East

HR637 is a main-sequence star in the constellation of Eridanus.

HR637 visual magnitude is 6.12. Because of its reltive faintness, HR637 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 HR637:


HR637 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -32.9°
Azimuth: 132.0°
Direction: South-East

Celestial coordinates and finder chart of HR637

HR637 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR637 are provided in the following table:

02h 10m 25s
-50° 49’ 27”

The simplified sky map below shows the position of HR637 in the sky:

Finder chart HR637 star
Simplified finder chart for HR637.

Visibility of HR637 from your location

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

HR637 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR637

The image below is a photograph of HR637 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 HR637 is 2.119 arcsec per year in Right Ascension and 0.641 arcsec per year in Declination and the associated displacement for the next 100 years is represented with the red arrow.

Image of HR637 star
DSS2 image of HR637. The red arrow shows the motion of HR637 during the next 100 years (3.53 arcmin in Right Ascension and 1.07 arcmin in declination);

Distance of HR637 from the Sun and relative movement

HR637 is distant 35.58 light years from the Sun and it is moving far from the Sun at the speed of 53 kilometers per second.

10.91 pc
35.58 ly
53 km/s
2.119 arcsec/year
0.641 arcsec/year

Spectral properties of HR637

HR637 belongs to spectral class K1 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR637 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR637. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR637