HR2222

Altitude: -22.0° Azimuth: 22.9° Direction: North-North-East

HR2222 is a variable and double main-sequence star in the constellation of Orion.

HR2222 visual magnitude is 5.91. Because of its reltive faintness, HR2222 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 HR2222:

Color of HR2222 ⬤

Magnitude of HR2222 5.91

Class Main-sequence

VISIBILITY RIGHT NOW

HR2222 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -22.0°
Azimuth: 22.9°
Direction: North-North-East

Celestial coordinates and finder chart of HR2222

HR2222 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 HR2222 are provided in the following table:

Right Ascension J2000 06h 15m 08s

Declination J2000 +13° 51’ 03”

Galactic Longitude 196.49°

Galactic Latitude -1.55°

Constellation Orion

The simplified sky map below shows the position of HR2222 in the sky:

Simplified finder chart for HR2222.

Visibility of HR2222 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 HR2222 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: 76.1° RISE 6:54

Max altitude: 52.4° TRANSIT 14:04

Azimuth: 283.9° SET 21:14

RIGHT NOW HR2222 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR2222

The image below is a photograph of HR2222 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 HR2222 is 0.023 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 HR2222. The red arrow shows the motion of HR2222 during the next 10000 years (3.83 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR2222 from the Sun and relative movement

HR2222 is distant 1,369.75 light years from the Sun and it is moving far from the Sun at the speed of 36 kilometers per second.

Distance (parsec) 420.17 pc

Distance (light year) 1,369.75 ly

Heliocentric radial velocity 36 km/s

Proper Motion RA 0.023 arcsec/year

Proper Motion Dec 0.006 arcsec/year

Spectral properties of HR2222

HR2222 belongs to spectral class B1 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -2.21

Spectral Type B1V

Color Index (B-V) -0.23

Temperature of HR2222 14354K

The red dot in the diagram below shows where HR2222 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2222. Attribution: Richard Powell / CC BY-SA

HR2222 star system properties

HR2222 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR2222 double sysyem:

Main star magnitude 5.91

Secondary star magnitude 12.51

Magnitude difference 6.6

Separation 21.3 arcsec

Alternative designations of HR2222

Henry Draper Catalogue HD43112

SAO Catalogue SAO95444

Hipparcos Catalogue HIP29678

Durchmusterung Catalogue BD+13 1173

FK5 Catalogue 2474

General Catalogue of Variable Stars 2878

In Evidence

Other stars in Orion