HR4774

HR4774 is a main-sequence star in the constellation of Hydra.

HR4774 visual magnitude is 6.46. Because of its reltive faintness, HR4774 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 HR4774:

Color of HR4774 ⬤

Magnitude of HR4774 6.46

Class Main-sequence

VISIBILITY RIGHT NOW HR4774 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR4774

HR4774 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4774 are provided in the following table:

Right Ascension J2000 12h 32m 04s

Declination J2000 -32° 32’ 00”

Galactic Longitude 298.21°

Galactic Latitude 30.16°

Constellation Hydra

The simplified sky map below shows the position of HR4774 in the sky:

Simplified finder chart for HR4774.

Visibility of HR4774 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 HR4774 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: 122.5° RISE 18:21

Max altitude: 6.0° TRANSIT 20:47

Azimuth: 237.5° SET 23:14

RIGHT NOW HR4774 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4774

The image below is a photograph of HR4774 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 HR4774 is -0.015 arcsec per year in Right Ascension and -0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4774. The red arrow shows the motion of HR4774 during the next 10000 years (-2.50 arcmin in Right Ascension and -1.33 arcmin in declination);

Distance of HR4774 from the Sun and relative movement

HR4774 is distant 567.94 light years from the Sun and it is moving towards the Sun at the speed of 9 kilometers per second.

Distance (parsec) 174.22 pc

Distance (light year) 567.94 ly

Heliocentric radial velocity -9 km/s

Proper Motion RA -0.015 arcsec/year

Proper Motion Dec -0.008 arcsec/year

Spectral properties of HR4774

HR4774 belongs to spectral class A3 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 0.25

Spectral Type A3V

Color Index (B-V) 0.2

Temperature of HR4774 8163K

The red dot in the diagram below shows where HR4774 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4774. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4774

Henry Draper Catalogue HD109074

SAO Catalogue SAO203567

Hipparcos Catalogue HIP61172

Durchmusterung Catalogue CD-31 9746

In Evidence

Other stars in Hydra