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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 5:15 
Transit: 13:06 
Sunset: 20:56
sunny   (Daytime)   What's Visible Now?
All Constellations » Hydra » 

HR4978

Above the horizon.  Rise: 14:35 | Tran: 17:57 | Set: 21:19
Alt: 11.83°   Az: 178.92°   Direction: South

HR4978 is a double main-sequence star of spectral class A5 in the constellation of Hydra.

HR4978 visual magnitude is 6.5. Because of its faintness, HR4978 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 HR4978 star
DSS2 image of HR4978. The red arrow shows the motion of HR4978 during the next 10000 years (-11.33 arcmin in Right Ascension and 0.67 arcmin in declination);

Celestial Coordinates

Apparent

13h 12m 59s
-26° 40’ 54”
23h 55m 15s
13h 08m 15s

J2000

13h 11m 39s
-26° 33’ 06”

Galactic Coordinates

308.53°
36.1°

Finder Chart

Finder chart HR4978 star
Simplified finder chart for HR4978.

Magnitude, Color, Spectral Class

6.5
Main-sequence

1.24
A5V
8241K

The red dot in the diagram below shows where HR4978 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4978. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4978 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR4978 double sysyem:

6.5
6.6
0.1
0.2 arcsec

Distance, Radial Speed, Proper Motion

HR4978 is distant 367.12 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

112.61
367.12
-21 km/s
-0.068 arcsec/y
0.004"/y

Alternative Designations

SAO181446
SAO181446

Visibility from Your Location

Today's HR4978 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 116.7°
Max altitude: 11.8°
Azimuth: 243.3°