HR2271

Altitude: 4.5° Azimuth: 227.6° Direction: South-West

HR2271 is a variable sub-giant star in the constellation of Canis Major.

HR2271 visual magnitude is 5.81. Because of its reltive faintness, HR2271 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 HR2271:

Color of HR2271 ⬤

Magnitude of HR2271 5.81

Class Sub-giant

VISIBILITY RIGHT NOW

HR2271 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 4.5°
Azimuth: 227.6°
Direction: South-West

Celestial coordinates and finder chart of HR2271

HR2271 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 HR2271 are provided in the following table:

Right Ascension J2000 06h 18m 59s

Declination J2000 -20° 55’ 33”

Galactic Longitude 228.51°

Galactic Latitude -16.27°

Constellation Canis Major

The simplified sky map below shows the position of HR2271 in the sky:

Simplified finder chart for HR2271.

Visibility of HR2271 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 HR2271 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: 110.9° RISE 2:36

Max altitude: 17.6° TRANSIT 6:40

Azimuth: 249.1° SET 10:43

Digitized Sky Survey image of HR2271

The image below is a photograph of HR2271 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 HR2271 is -0.009 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR2271. The red arrow shows the motion of HR2271 during the next 100000 years (-15.00 arcmin in Right Ascension and -15.00 arcmin in declination);

Distance of HR2271 from the Sun and relative movement

HR2271 is distant 1,841.81 light years from the Sun and it is moving far from the Sun at the speed of 31 kilometers per second.

Distance (parsec) 564.97 pc

Distance (light year) 1,841.81 ly

Heliocentric radial velocity 31 km/s

Proper Motion RA -0.009 arcsec/year

Proper Motion Dec -0.009 arcsec/year

Spectral properties of HR2271

HR2271 belongs to spectral class B4 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -2.95

Spectral Type B4IV

Color Index (B-V) -0.15

Temperature of HR2271 12489K

The red dot in the diagram below shows where HR2271 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2271. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2271

Henry Draper Catalogue HD44081

SAO Catalogue SAO171549

Hipparcos Catalogue HIP30011

Durchmusterung Catalogue BD-20 1355

General Catalogue of Variable Stars 2915

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In Evidence

Other stars in Canis Major