HR3805

HR3805 is a hypergiant star in the constellation of Hydra.

HR3805 visual magnitude is 6.24. Because of its reltive faintness, HR3805 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 HR3805:

Color of HR3805 ⬤

Magnitude of HR3805 6.24

Class Hypergiant

VISIBILITY RIGHT NOW HR3805 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 20°.

Celestial coordinates and finder chart of HR3805

HR3805 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 HR3805 are provided in the following table:

Right Ascension J2000 09h 33m 20s

Declination J2000 -07° 11’ 24”

Galactic Longitude 241.15°

Galactic Latitude 31.07°

Constellation Hydra

The simplified sky map below shows the position of HR3805 in the sky:

Simplified finder chart for HR3805.

Visibility of HR3805 from your location

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

Today's HR3805 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 97.2° RISE 12:31

Max altitude: 31.3° TRANSIT 17:53

Azimuth: 262.8° SET 23:15

RIGHT NOW HR3805 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR3805

The image below is a photograph of HR3805 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 HR3805 is -0.033 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR3805. The red arrow shows the motion of HR3805 during the next 10000 years (-5.50 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of HR3805 from the Sun and relative movement

HR3805 is distant 420.65 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

Distance (parsec) 129.03 pc

Distance (light year) 420.65 ly

Heliocentric radial velocity 29 km/s

Proper Motion RA -0.033 arcsec/year

Proper Motion Dec -0.012 arcsec/year

Spectral properties of HR3805

HR3805 belongs to spectral class K0

Absolute magnitude 0.69

Spectral Type K0

Color Index (B-V) 1.17

Temperature of HR3805 4368K

The red dot in the diagram below shows where HR3805 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3805. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3805

Henry Draper Catalogue HD82674

SAO Catalogue SAO136951

Hipparcos Catalogue HIP46893

Durchmusterung Catalogue BD-06 2939

In Evidence

Other stars in Hydra