ρ Herculis (rho Herculis)

Above the horizon. Rise: 15:24 | Tran: 2:13 | Set: 12:57

Alt: 44.32° Az: 277.34° Direction: West

ρ Herculis is a variable and multiple giant star of spectral class B9 in the constellation of Hercules.

ρ Herculis visual magnitude is 4.52. Because of its moderate brightness, ρ 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 ρ Herculis. The red arrow shows the motion of ρ Herculis during the next 10000 years (-6.17 arcmin in Right Ascension and 1.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 17h 24m 33s

Declination +37° 07’ 25”

Hour Angle 04h 11m 28s

Sidereal Time 21h 36m 02s

J2000

Right Ascension 17h 23m 40s

Declination +37° 08’ 44”

Galactic Coordinates

Galactic Longitude 61.44°

Galactic Latitude 32.71°

Finder Chart

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Finder chart for ρ Herculis (rho Herculis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.52

Class Giant

Spectral Type B9III

Color Index (B-V) -0.03

Temperature 10516K

Star System Properties

ρ Herculis is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the ρ Herculis double sysyem:

Main star magnitude 4.52

Secondary star magnitude 5.52

Magnitude difference 1

Separation 4.2 arcsec

Alternative Designations

Bayer designation ρ Herculis
(rho Herculis)

Flamsteed designation 75 Herculis

Henry Draper Catalogue HD157779

SAO Catalogue SAO66001

Durchmusterung Catalogue BD+37 2878

General Catalogue of Variable Stars 8605

Aitken Double Star Catalogue ADS10526

Visibility from Your Location

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

Azimuth: 52.9° RISE 15:24

Max altitude: 75.6° TRANSIT 2:13

Azimuth: 307.1° SET 12:57

Set Location

Other stars in Hercules