HR305

HR305 is a hypergiant star in the constellation of Andromeda.

HR305 visual magnitude is 6.72. Because of its reltive faintness, HR305 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 HR305:

Color of HR305 ⬤

Magnitude of HR305 6.72

Class Hypergiant

VISIBILITY RIGHT NOW HR305 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 27°.

Celestial coordinates and finder chart of HR305

HR305 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 HR305 are provided in the following table:

Right Ascension J2000 01h 04m 36s

Declination J2000 +39° 59’ 27”

Galactic Longitude 125.67°

Galactic Latitude -22.81°

Constellation Andromeda

The simplified sky map below shows the position of HR305 in the sky:

Simplified finder chart for HR305.

Visibility of HR305 from your location

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

HR305 is circumpolar and transits at 12:30 UTC (altitude: 78.5°)

Digitized Sky Survey image of HR305

The image below is a photograph of HR305 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 HR305 is 0.077 arcsec per year in Right Ascension and -0.022 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR305. The red arrow shows the motion of HR305 during the next 10000 years (12.83 arcmin in Right Ascension and -3.67 arcmin in declination);

Distance of HR305 from the Sun and relative movement

HR305 is distant 275.11 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

Distance (parsec) 84.39 pc

Distance (light year) 275.11 ly

Heliocentric radial velocity 11 km/s

Proper Motion RA 0.077 arcsec/year

Proper Motion Dec -0.022 arcsec/year

Spectral properties of HR305

HR305 belongs to spectral class F0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude 2.09

Spectral Type F0V

Color Index (B-V) 0.31

Temperature of HR305 7399K

The red dot in the diagram below shows where HR305 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR305. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR305

Henry Draper Catalogue HD6314

SAO Catalogue SAO54398

Hipparcos Catalogue HIP5045

Durchmusterung Catalogue BD+39 249

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In Evidence

Other stars in Andromeda