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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:07 
Transit: 13:06 
Sunset: 21:04
sunny   (Daytime)   What's Visible Now?
All Constellations » Sagittarius » 

HR7728

Below the horizon.  Rise: 23:56 | Tran: 1:28 | Set: 2:57
Alt: -74.05°   Az: 338.47°   Direction: North-North-West

HR7728 is a variable and multiple giant star of spectral class M4 in the constellation of Sagittarius.

HR7728 visual magnitude is 6.39. Because of its faintness, HR7728 is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Image of HR7728 star
DSS2 image of HR7728. The red arrow shows the motion of HR7728 during the next 10000 years (1.50 arcmin in Right Ascension and -7.00 arcmin in declination);

Celestial Coordinates

Apparent

20h 17m 59s
-36° 22’ 38”
11h 31m 13s
07h 49m 12s

J2000

20h 16m 23s
-36° 27’ 15”

Galactic Coordinates

5.09°
-32.02°

Finder Chart

Finder chart HR7728 star
Simplified finder chart for HR7728.

Magnitude, Color, Spectral Class

6.39
Giant

-0.69
M4III
3734K

The red dot in the diagram below shows where HR7728 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7728. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR7728 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR7728 double sysyem:

6.39
11.49
5.1
38 arcsec

Distance, Radial Speed, Proper Motion

HR7728 is distant 851.17 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

261.10
851.17
-14 km/s
0.009 arcsec/y
-0.042"/y

Alternative Designations

SAO211948
SAO211948

Visibility from Your Location

Today's HR7728 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 126.4°
Max altitude: 2.1°
Azimuth: 233.6°