HR1703

Altitude: -9.9° Azimuth: 76.4° Direction: East-North-East

HR1703 is a variable hypergiant star in the constellation of Orion.

HR1703 visual magnitude is 6.32. Because of its reltive faintness, HR1703 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 HR1703:

Color of HR1703 ⬤

Magnitude of HR1703 6.32

Class Hypergiant

VISIBILITY RIGHT NOW

HR1703 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -9.9°
Azimuth: 76.4°
Direction: East-North-East

Celestial coordinates and finder chart of HR1703

HR1703 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 HR1703 are provided in the following table:

Right Ascension J2000 05h 13m 47s

Declination J2000 +00° 33’ 37”

Galactic Longitude 200.71°

Galactic Latitude -21.31°

Constellation Orion

The simplified sky map below shows the position of HR1703 in the sky:

Simplified finder chart for HR1703.

Visibility of HR1703 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 HR1703 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: 89.4° RISE 18:06

Max altitude: 39.1° TRANSIT 0:11

Azimuth: 270.6° SET 6:12

Digitized Sky Survey image of HR1703

The image below is a photograph of HR1703 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 HR1703 is 0.003 arcsec per year in Right Ascension and -0.025 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR1703. The red arrow shows the motion of HR1703 during the next 10000 years (0.50 arcmin in Right Ascension and -4.17 arcmin in declination);

Distance of HR1703 from the Sun and relative movement

HR1703 is distant 831.63 light years from the Sun and it is moving towards the Sun at the speed of 11 kilometers per second.

Distance (parsec) 255.10 pc

Distance (light year) 831.63 ly

Heliocentric radial velocity -11 km/s

Proper Motion RA 0.003 arcsec/year

Proper Motion Dec -0.025 arcsec/year

Spectral properties of HR1703

HR1703 belongs to spectral class M0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude -0.71

Spectral Type M0V

Color Index (B-V) 1.46

Temperature of HR1703 3855K

The red dot in the diagram below shows where HR1703 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1703. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1703

Henry Draper Catalogue HD33946

SAO Catalogue SAO112543

Hipparcos Catalogue HIP24377

Durchmusterung Catalogue BD+00 988

General Catalogue of Variable Stars 1874

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In Evidence

Other stars in Orion