HR4810

Altitude: -5.5° Azimuth: 134.1° Direction: South-East

HR4810 is a variable giant star in the constellation of Hydra.

HR4810 visual magnitude is 5.89. Because of its reltive faintness, HR4810 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 HR4810:

Color of HR4810 ⬤

Magnitude of HR4810 5.89

Class Giant

VISIBILITY RIGHT NOW

HR4810 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -5.5°
Azimuth: 134.1°
Direction: South-East

Celestial coordinates and finder chart of HR4810

HR4810 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 HR4810 are provided in the following table:

Right Ascension J2000 12h 39m 03s

Declination J2000 -30° 25’ 19”

Galactic Longitude 299.77°

Galactic Latitude 32.37°

Constellation Hydra

The simplified sky map below shows the position of HR4810 in the sky:

Simplified finder chart for HR4810.

Visibility of HR4810 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 HR4810 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: 120.4° RISE 17:34

Max altitude: 8.1° TRANSIT 20:23

Azimuth: 239.6° SET 23:12

RIGHT NOW HR4810 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4810

The image below is a photograph of HR4810 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 HR4810 is -0.034 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4810. The red arrow shows the motion of HR4810 during the next 10000 years (-5.67 arcmin in Right Ascension and -1.00 arcmin in declination);

Distance of HR4810 from the Sun and relative movement

HR4810 is distant 546.98 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 167.79 pc

Distance (light year) 546.98 ly

Heliocentric radial velocity -13 km/s

Proper Motion RA -0.034 arcsec/year

Proper Motion Dec -0.006 arcsec/year

Spectral properties of HR4810

HR4810 belongs to spectral class K2 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -0.23

Spectral Type K2III

Color Index (B-V) 1.21

Temperature of HR4810 4289K

The red dot in the diagram below shows where HR4810 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4810. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4810

Henry Draper Catalogue HD109960

SAO Catalogue SAO203666

Hipparcos Catalogue HIP61720

Durchmusterung Catalogue CD-29 9845

FK5 Catalogue 3011

General Catalogue of Variable Stars 5822

In Evidence

Other stars in Hydra