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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:59 
Transit: 12:56 
Sunset: 20:54
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All Constellations » Aquarius » 

4 Aquarii

Above the horizon.  Rise: 0:18 | Tran: 5:52 | Set: 11:22
Alt: 8.05°   Az: 109.50°   Direction: East-South-East

4 Aquarii is a variable and multiple main-sequence star of spectral class F5 in the constellation of Aquarius.

4 Aquarii visual magnitude is 5.99. Because of its faintness, 4 Aquarii 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 4 Aquarii star
DSS2 image of 4 Aquarii. The red arrow shows the motion of 4 Aquarii during the next 1000 years (1.65 arcmin in Right Ascension and -0.02 arcmin in declination);

Celestial Coordinates

Apparent

20h 52m 46s
-05° 31’ 47”
19h 21m 19s
16h 14m 05s

J2000

20h 51m 25s
-05° 37’ 35”

Galactic Coordinates

42.13°
-29.18°

Finder Chart

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Finder chart for 4 Aquarii.

Magnitude, Color, Spectral Class

5.99
Main-sequence

2.14
F5V
6576K

The red dot in the diagram below shows where 4 Aquarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 4 Aquarii. Attribution: Richard Powell / CC BY-SA

Star System Properties

4 Aquarii is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 4 Aquarii double sysyem:

5.99
6.89
0.9
1.1 arcsec

Distance, Radial Speed, Proper Motion

4 Aquarii is distant 192.10 light years from the Sun and it is moving towards the Sun at the speed of 25 kilometers per second.

58.93
192.10
-25 km/s
0.099 arcsec/y
-0.001"/y

Alternative Designations

SAO144877
SAO144877

Visibility from Your Location

Today's 4 Aquarii rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 95.5°
Max altitude: 33.0°
Azimuth: 264.5°