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Cujam - ω Herculis (omega Herculis)

Cujam, also designated as ω Herculis (omega Herculis), is a variable and multiple star in the constellation of Hercules.

Cujam visual magnitude is 4.57. Because of its moderate brightness, Cujam should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about Cujam:

Color of Cujam ⬤

Magnitude of Cujam 4.57

Class

VISIBILITY RIGHT NOW Cujam - ω Herculis (omega Herculis) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 46°.

Celestial coordinates and finder chart of Cujam

Cujam is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Cujam are provided in the following table:

Right Ascension J2000 16h 25m 24s

Declination J2000 +14° 01’ 59”

Galactic Longitude 29.46°

Galactic Latitude 38.63°

Constellation Hercules

The simplified sky map below shows the position of Cujam in the sky:

Finder chart Cujam - ω Herculis (omega Herculis) star

Simplified finder chart for Cujam - ω Herculis (omega Herculis).

Visibility of Cujam from your location

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

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

Azimuth: 76.0° RISE 21:05

Max altitude: 52.6° TRANSIT 4:19

Azimuth: 284.0° SET 11:30

RIGHT NOW Cujam - ω Herculis (omega Herculis) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Cujam

The image below is a photograph of Cujam 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 Cujam is 0.044 arcsec per year in Right Ascension and -0.059 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Cujam - ω Herculis (omega Herculis) star

DSS2 image of Cujam. The red arrow shows the motion of Cujam during the next 10000 years (7.33 arcmin in Right Ascension and -9.83 arcmin in declination);

Distance of Cujam from the Sun and relative movement

Cujam is distant 235.04 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 72.10 pc

Distance (light year) 235.04 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA 0.044 arcsec/year

Proper Motion Dec -0.059 arcsec/year

Spectral properties of Cujam

Cujam belongs to spectral class B9 Cujam is also a Cr chemically peculiar star.

Absolute magnitude 0.28

Spectral Type B9

Color Index (B-V) 0

Temperature of Cujam 10125K

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

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

Cujam star system properties

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

Main star magnitude 4.57

Secondary star magnitude 12.67

Magnitude difference 8.1

Separation 28.4 arcsec

Alternative designations of Cujam

Proper Name Cujam

Bayer designation ω Herculis
(omega Herculis)

Flamsteed designation 24 Herculis

Henry Draper Catalogue HD148112

SAO Catalogue SAO102153

Hipparcos Catalogue HIP80463

Durchmusterung Catalogue BD+14 3049

FK5 Catalogue 613

General Catalogue of Variable Stars Ome Her

Aitken Double Star Catalogue ADS10054

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