9 Aurigae

9 Aurigae is a multiple hypergiant star in the constellation of Auriga.

9 Aurigae visual magnitude is 5. Because of its moderate brightness, 9 Aurigae 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 9 Aurigae:

Color of 9 Aurigae ⬤

Magnitude of 9 Aurigae 5

Class Hypergiant

VISIBILITY RIGHT NOW 9 Aurigae is above the horizon from Greenwich, United Kingdom [change]. Altitude: 72°.

Celestial coordinates and finder chart of 9 Aurigae

9 Aurigae 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 9 Aurigae are provided in the following table:

Right Ascension J2000 05h 06m 40s

Declination J2000 +51° 35’ 52”

Galactic Longitude 157.06°

Galactic Latitude 6.51°

Constellation Auriga

The simplified sky map below shows the position of 9 Aurigae in the sky:

Simplified finder chart for 9 Aurigae.

Visibility of 9 Aurigae from your location

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

9 Aurigae is circumpolar and transits at 16:55 UTC (altitude: 89.9°)

Digitized Sky Survey image of 9 Aurigae

The image below is a photograph of 9 Aurigae 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 9 Aurigae is -0.03 arcsec per year in Right Ascension and -0.173 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of 9 Aurigae. The red arrow shows the motion of 9 Aurigae during the next 1000 years (-0.50 arcmin in Right Ascension and -2.88 arcmin in declination);

Distance of 9 Aurigae from the Sun and relative movement

9 Aurigae is distant 85.47 light years from the Sun and it is moving towards the Sun at the speed of 5 kilometers per second.

Distance (parsec) 26.22 pc

Distance (light year) 85.47 ly

Heliocentric radial velocity -5 km/s

Proper Motion RA -0.03 arcsec/year

Proper Motion Dec -0.173 arcsec/year

Spectral properties of 9 Aurigae

9 Aurigae belongs to spectral class F0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude 2.91

Spectral Type F0V

Color Index (B-V) 0.33

Temperature of 9 Aurigae 7276K

The red dot in the diagram below shows where 9 Aurigae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 9 Aurigae. Attribution: Richard Powell / CC BY-SA

9 Aurigae star system properties

9 Aurigae 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 9 Aurigae double sysyem:

Main star magnitude 5

Secondary star magnitude 9.4

Magnitude difference 4.4

Separation 90.1 arcsec

Alternative designations of 9 Aurigae

Flamsteed designation 9 Aurigae

Henry Draper Catalogue HD32537

SAO Catalogue SAO25019

Hipparcos Catalogue HIP23783

Durchmusterung Catalogue BD+51 1024

Gliese Catalogue Gl 187.2A

Aitken Double Star Catalogue ADS3675

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Other stars in Auriga