Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

25 Herculis

25 Herculis is a main-sequence star in the constellation of Hercules.

25 Herculis visual magnitude is 5.54. Because of its reltive faintness, 25 Herculis should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 25 Herculis:

5.54
Main-sequence
25 Herculis is above the horizon from Greenwich, United Kingdom [change]. Altitude: 21°.

Celestial coordinates and finder chart of 25 Herculis

25 Herculis is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 25 Herculis are provided in the following table:

16h 25m 24s
+37° 23’ 38”
59.9°
44.23°
Hercules

The simplified sky map below shows the position of 25 Herculis in the sky:

Finder chart 25 Herculis star
Simplified finder chart for 25 Herculis.

Visibility of 25 Herculis from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's 25 Herculis rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.6°
Max altitude: 75.9°
Azimuth: 307.4°
25 Herculis is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 25 Herculis

The image below is a photograph of 25 Herculis from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of 25 Herculis is 0.006 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 25 Herculis star
DSS2 image of 25 Herculis. The red arrow shows the motion of 25 Herculis during the next 10000 years (1.00 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of 25 Herculis from the Sun and relative movement

25 Herculis is distant 256.09 light years from the Sun and it is moving towards the Sun at the speed of 1 kilometers per second.

78.55 pc
256.09 ly
-1 km/s
0.006 arcsec/year
-0.012 arcsec/year

Spectral properties of 25 Herculis

25 Herculis belongs to spectral class A5 and has a luminosity class of V corresponding to a main-sequence star.

1.06
A5V
8403K

The red dot in the diagram below shows where 25 Herculis is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 25 Herculis. Attribution: Richard Powell / CC BY-SA

Alternative designations of 25 Herculis

25 Herculis
SAO65290
SAO65290