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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:56 
Transit: 12:56 
Sunset: 20:58
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All Constellations » Hydra » 

15 Hydrae

Below the horizon.  Rise: 12:17 | Tran: 17:38 | Set: 23:00
Alt: -45.39°   Az: 349.80°   Direction: North

15 Hydrae is a variable and multiple star of spectral class A4 in the constellation of Hydra.

15 Hydrae visual magnitude is 5.54. Because of its faintness, 15 Hydrae 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 15 Hydrae star
DSS2 image of 15 Hydrae. The red arrow shows the motion of 15 Hydrae during the next 10000 years (-7.33 arcmin in Right Ascension and 0.17 arcmin in declination);

Celestial Coordinates

Apparent

08h 52m 49s
-07° 16’ 25”
11h 31m 11s
20h 24m 01s

J2000

08h 51m 34s
-07° 10’ 37”

Galactic Coordinates

234.39°
22.64°

Finder Chart

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Finder chart for 15 Hydrae.

Magnitude, Color, Spectral Class

5.54

-0.34
A4
8571K

The red dot in the diagram below shows where 15 Hydrae is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 15 Hydrae. Attribution: Richard Powell / CC BY-SA

Star System Properties

15 Hydrae is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the 15 Hydrae double sysyem:

5.54
7.34
1.8
0.9 arcsec

Distance, Radial Speed, Proper Motion

15 Hydrae is distant 488.02 light years from the Sun and it is moving far from the Sun at the speed of 37 kilometers per second.

149.70
488.02
37 km/s
-0.044 arcsec/y
0.001"/y

Alternative Designations

SAO136345
SAO136345

Visibility from Your Location

Today's 15 Hydrae rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 97.3°
Max altitude: 31.2°
Azimuth: 262.7°