φ Herculis (phi Herculis)

Above the horizon. Circumpolar today

Alt: 32.24° Az: 303.16° Direction: West-North-West

φ Herculis is a variable star of spectral class B9 in the constellation of Hercules.

φ Herculis visual magnitude is 4.26. Because of its moderate brightness, φ Herculis is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of φ Herculis. The red arrow shows the motion of φ Herculis during the next 10000 years (-4.17 arcmin in Right Ascension and 6.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 09m 34s

Declination +44° 52’ 09”

Hour Angle 06h 09m 38s

Sidereal Time 22h 19m 12s

J2000

Right Ascension 16h 08m 46s

Declination +44° 56’ 06”

Galactic Coordinates

Galactic Longitude 70.85°

Galactic Latitude 47.11°

Finder Chart

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Finder chart for φ Herculis (phi Herculis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.26

Class

φ Herculis is also a Mn chemically peculiar star.

Absolute magnitude 0.03

Spectral Type B9

Color Index (B-V) -0.07

Temperature 11092K

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

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

Distance, Radial Speed, Proper Motion

φ Herculis is distant 228.45 light years from the Sun and it is moving towards the Sun at the speed of 16 kilometers per second.

Distance (parsec) 70.08

Distance (light year) 228.45

Radial Speed -16 km/s

Proper Motion RA -0.025 arcsec/y

Proper Motion Dec 0.038"/y

Alternative Designations

Bayer designation φ Herculis
(phi Herculis)

Flamsteed designation 11 Herculis

Henry Draper Catalogue HD145389

SAO Catalogue SAO45911

Hipparcos Catalogue HIP79101

Durchmusterung Catalogue BD+45 2376

FK5 Catalogue 601

General Catalogue of Variable Stars 7490

Visibility from Your Location

φ Herculis (phi Herculis) is circumpolar and transits at 00:25 UTC (altitude: 83.4°)

In Evidence

Other stars in Hercules

φ Herculis (phi Herculis)

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location

Set Location

In Evidence

Other stars in Hercules

φ Herculis (phi Herculis)

Celestial Coordinates

Apparent

J2000

Galactic Coordinates

Finder Chart

Magnitude, Color, Spectral Class

Distance, Radial Speed, Proper Motion

Alternative Designations

Visibility from Your Location