HR2231

Altitude: -0.5° Azimuth: 79.6° Direction: East

HR2231 is a main-sequence star in the constellation of Orion.

HR2231 visual magnitude is 6.07. Because of its reltive faintness, HR2231 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 HR2231:

Color of HR2231 ⬤

Magnitude of HR2231 6.07

Class Main-sequence

VISIBILITY RIGHT NOW

HR2231 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -0.5°
Azimuth: 79.6°
Direction: East

Celestial coordinates and finder chart of HR2231

HR2231 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 HR2231 are provided in the following table:

Right Ascension J2000 06h 15m 40s

Declination J2000 +06° 03’ 57”

Galactic Longitude 203.42°

Galactic Latitude -5.13°

Constellation Orion

The simplified sky map below shows the position of HR2231 in the sky:

Simplified finder chart for HR2231.

Visibility of HR2231 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 HR2231 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: 83.9° RISE 18:33

Max altitude: 44.6° TRANSIT 1:05

Azimuth: 276.1° SET 7:34

Digitized Sky Survey image of HR2231

The image below is a photograph of HR2231 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 HR2231 is -0.008 arcsec per year in Right Ascension and -0.024 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR2231. The red arrow shows the motion of HR2231 during the next 10000 years (-1.33 arcmin in Right Ascension and -4.00 arcmin in declination);

Distance of HR2231 from the Sun and relative movement

HR2231 is distant 742.60 light years from the Sun and it is moving far from the Sun at the speed of 26 kilometers per second.

Distance (parsec) 227.79 pc

Distance (light year) 742.60 ly

Heliocentric radial velocity 26 km/s

Proper Motion RA -0.008 arcsec/year

Proper Motion Dec -0.024 arcsec/year

Spectral properties of HR2231

HR2231 belongs to spectral class B6 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -0.72

Spectral Type B6V

Color Index (B-V) -0.13

Temperature of HR2231 12103K

The red dot in the diagram below shows where HR2231 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2231. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2231

Henry Draper Catalogue HD43285

SAO Catalogue SAO113650

Hipparcos Catalogue HIP29728

Durchmusterung Catalogue BD+06 1172

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In Evidence

Other stars in Orion