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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
SunriseRise: 6:59  
clear_day Transit: 12:12  
SunsetSet: 17:25
wb_twilight Civil TwilightWhat's Visible Now?
All Constellations » Columba » 

HR1772

Altitude: 2.2°   Azimuth: 162.5°   Direction: South-South-East

HR1772 is a variable and double sub-giant star in the constellation of Columba.

HR1772 visual magnitude is 6.09. Because of its reltive faintness, HR1772 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR1772 is 0.009 arcsec per year in Right Ascension and 0.001 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

Image of HR1772 star
DSS2 image of HR1772. The red arrow shows the motion of HR1772 during the next 100000 years (15.00 arcmin in Right Ascension and 1.67 arcmin in declination);

Key facts about HR1772

6.09
Sub-giant

HR1772 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 2.2°
Azimuth: 162.5°
Direction: South-South-East

Celestial coordinates and finder chart of HR1772

HR1772 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 HR1772 are provided in the following table:

05h 21m 16s
-34° 20’ 43”
238.07°
-32.61°
Columba

The simplified sky map below shows the position of HR1772 in the sky:

Finder chart HR1772 star
Simplified finder chart for HR1772.

Visibility of HR1772 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 HR1772 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: 124.3°
Max altitude: 4.2°
Azimuth: 235.7°

Distance of HR1772 from the Sun and relative movement

HR1772 is distant 1,895.35 light years from the Sun and it is moving far from the Sun at the speed of 20 kilometers per second.

581.40 pc
1,895.35 ly
20 km/s
0.009 arcsec/year
0.001 arcsec/year

Spectral properties of HR1772

HR1772 belongs to spectral class B5 and has a luminosity class of IV corresponding to a sub-giant star.

-2.73
B5IV
13348K

The red dot in the diagram below shows where HR1772 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR1772. Attribution: Richard Powell / CC BY-SA

HR1772 star system properties

HR1772 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR1772 double sysyem:

6.09
10.89
4.8
2.2 arcsec

Alternative designations of HR1772

SAO195770
SAO195770