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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: 7:50  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sunny DaytimeWhat's Visible Now?
All Constellations » Taurus » 


Altitude: -19.4°   Azimuth: 346.8°   Direction: North-North-West

HR1238 is a double main-sequence star in the constellation of Taurus.

HR1238 visual magnitude is 5.89. Because of its reltive faintness, HR1238 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 HR1238:


HR1238 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -19.4°
Azimuth: 346.8°
Direction: North-North-West

Celestial coordinates and finder chart of HR1238

HR1238 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR1238 are provided in the following table:

04h 00m 48s
+18° 11’ 38”

The simplified sky map below shows the position of HR1238 in the sky:

Finder chart HR1238 star
Simplified finder chart for HR1238.

Visibility of HR1238 from your location

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

Today's HR1238 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 71.8°
Max altitude: 56.7°
Azimuth: 288.2°

Digitized Sky Survey image of HR1238

The image below is a photograph of HR1238 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 HR1238 is 0.132 arcsec per year in Right Ascension and -0.028 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR1238 star
DSS2 image of HR1238. The red arrow shows the motion of HR1238 during the next 1000 years (2.20 arcmin in Right Ascension and -0.47 arcmin in declination);

Distance of HR1238 from the Sun and relative movement

HR1238 is distant 148.25 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

45.48 pc
148.25 ly
25 km/s
0.132 arcsec/year
-0.028 arcsec/year

Spectral properties of HR1238

HR1238 belongs to spectral class F4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1238 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1238. Attribution: Richard Powell / CC BY-SA

HR1238 star system properties

HR1238 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR1238 double sysyem:

164.2 arcsec

Alternative designations of HR1238