HR4571

Altitude: -34.7° Azimuth: 258.3° Direction: West-South-West

HR4571 is a variable hypergiant star in the constellation of Hydra.

HR4571 visual magnitude is 6.21. Because of its reltive faintness, HR4571 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 HR4571:

Color of HR4571 ⬤

Magnitude of HR4571 6.21

Class Hypergiant

VISIBILITY RIGHT NOW

HR4571 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -34.7°
Azimuth: 258.3°
Direction: West-South-West

Celestial coordinates and finder chart of HR4571

HR4571 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 HR4571 are provided in the following table:

Right Ascension J2000 11h 57m 03s

Declination J2000 -33° 18’ 55”

Galactic Longitude 290.06°

Galactic Latitude 28.19°

Constellation Hydra

The simplified sky map below shows the position of HR4571 in the sky:

Simplified finder chart for HR4571.

Visibility of HR4571 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 HR4571 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: 123.3° RISE 17:24

Max altitude: 5.2° TRANSIT 19:41

Azimuth: 236.7° SET 21:58

RIGHT NOW HR4571 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4571

The image below is a photograph of HR4571 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 HR4571 is -0.055 arcsec per year in Right Ascension and 0.003 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4571. The red arrow shows the motion of HR4571 during the next 10000 years (-9.17 arcmin in Right Ascension and 0.50 arcmin in declination);

Distance of HR4571 from the Sun and relative movement

HR4571 is distant 377.75 light years from the Sun and it is moving towards the Sun at the speed of 10 kilometers per second.

Distance (parsec) 115.87 pc

Distance (light year) 377.75 ly

Heliocentric radial velocity -10 km/s

Proper Motion RA -0.055 arcsec/year

Proper Motion Dec 0.003 arcsec/year

Spectral properties of HR4571

HR4571 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude 0.89

Spectral Type A0V

Color Index (B-V) -0.04

Temperature of HR4571 10653K

The red dot in the diagram below shows where HR4571 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4571. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4571

Henry Draper Catalogue HD103789

SAO Catalogue SAO202971

Hipparcos Catalogue HIP58272

Durchmusterung Catalogue CD-32 8413

General Catalogue of Variable Stars LV Hya

In Evidence

Other stars in Hydra