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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:58 
Transit: 12:56 
Sunset: 20:55
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All Constellations » Hydra » 

HR4157

Above the horizon.  Rise: 16:09 | Tran: 19:30 | Set: 22:52
Alt: 1.54°   Az: 220.69°   Direction: South-West

HR4157 is a variable and double main-sequence star of spectral class F5 in the constellation of Hydra.

HR4157 visual magnitude is 6.29. Because of its faintness, HR4157 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 HR4157 star
DSS2 image of HR4157. The red arrow shows the motion of HR4157 during the next 10000 years (1.50 arcmin in Right Ascension and -10.33 arcmin in declination);

Celestial Coordinates

Apparent

10h 37m 16s
-26° 48’ 25”
03h 07m 37s
13h 44m 54s

J2000

10h 36m 04s
-26° 40’ 30”

Galactic Coordinates

268.94°
27.12°

Finder Chart

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Finder chart for HR4157.

Magnitude, Color, Spectral Class

6.29
Main-sequence

3.07
F5V
6481K

The red dot in the diagram below shows where HR4157 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4157. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR4157 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR4157 double sysyem:

6.29
7.29
1
1 arcsec

Distance, Radial Speed, Proper Motion

HR4157 is distant 143.49 light years from the Sun and it is moving towards the Sun at the speed of 23 kilometers per second.

44.01
143.49
-23 km/s
0.009 arcsec/y
-0.062"/y

Alternative Designations

SAO179014
SAO179014

Visibility from Your Location

Today's HR4157 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 116.8°
Max altitude: 11.7°
Azimuth: 243.2°