HR3801

Altitude: 4.5° Azimuth: 109.7° Direction: East-South-East

HR3801 is a hypergiant star in the constellation of Hydra.

HR3801 visual magnitude is 6.12. Because of its reltive faintness, HR3801 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 HR3801:

Color of HR3801 ⬤

Magnitude of HR3801 6.12

Class Hypergiant

VISIBILITY RIGHT NOW

HR3801 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 4.5°
Azimuth: 109.7°
Direction: East-South-East

Celestial coordinates and finder chart of HR3801

HR3801 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 HR3801 are provided in the following table:

Right Ascension J2000 09h 33m 02s

Declination J2000 -08° 30’ 19”

Galactic Longitude 242.3°

Galactic Latitude 30.2°

Constellation Hydra

The simplified sky map below shows the position of HR3801 in the sky:

Simplified finder chart for HR3801.

Visibility of HR3801 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 HR3801 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: 98.5° RISE 23:27

Max altitude: 30.0° TRANSIT 4:45

Azimuth: 261.5° SET 10:00

Digitized Sky Survey image of HR3801

The image below is a photograph of HR3801 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 HR3801 is -0.02 arcsec per year in Right Ascension and -0.034 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR3801. The red arrow shows the motion of HR3801 during the next 10000 years (-3.33 arcmin in Right Ascension and -5.67 arcmin in declination);

Distance of HR3801 from the Sun and relative movement

HR3801 is distant 392.77 light years from the Sun and it is moving far from the Sun at the speed of 36 kilometers per second.

Distance (parsec) 120.48 pc

Distance (light year) 392.77 ly

Heliocentric radial velocity 36 km/s

Proper Motion RA -0.02 arcsec/year

Proper Motion Dec -0.034 arcsec/year

Spectral properties of HR3801

HR3801 belongs to spectral class K0

Absolute magnitude 0.72

Spectral Type K0

Color Index (B-V) 0.98

Temperature of HR3801 4791K

The red dot in the diagram below shows where HR3801 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3801. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3801

Henry Draper Catalogue HD82638

SAO Catalogue SAO136945

Hipparcos Catalogue HIP46869

Durchmusterung Catalogue BD-07 2836

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In Evidence

Other stars in Hydra