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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: 7:41  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Cetus » 


Altitude: 38.9°   Azimuth: 137.4°   Direction: South-East

HR770 is a sub-giant star in the constellation of Cetus.

HR770 visual magnitude is 6.39. Because of its reltive faintness, HR770 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 HR770:


HR770 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 38.9°
Azimuth: 137.4°
Direction: South-East

Celestial coordinates and finder chart of HR770

HR770 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 HR770 are provided in the following table:

02h 38m 00s
+07° 41’ 43”

The simplified sky map below shows the position of HR770 in the sky:

Finder chart HR770 star
Simplified finder chart for HR770.

Visibility of HR770 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 HR770 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: 82.3°
Max altitude: 46.2°
Azimuth: 277.7°

Digitized Sky Survey image of HR770

The image below is a photograph of HR770 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 HR770 is 0.086 arcsec per year in Right Ascension and -0.044 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR770 star
DSS2 image of HR770. The red arrow shows the motion of HR770 during the next 10000 years (14.33 arcmin in Right Ascension and -7.33 arcmin in declination);

Distance of HR770 from the Sun and relative movement

HR770 is distant 269.20 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

82.58 pc
269.20 ly
13 km/s
0.086 arcsec/year
-0.044 arcsec/year

Spectral properties of HR770

HR770 belongs to spectral class F6 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where HR770 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR770. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR770