HR1902

Altitude: -6.7° Azimuth: 331.6° Direction: North-North-West

HR1902 is a variable and multiple sub-giant star in the constellation of Taurus.

HR1902 visual magnitude is 5.83. Because of its reltive faintness, HR1902 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 HR1902:

Color of HR1902 ⬤

Magnitude of HR1902 5.83

Class Sub-giant

VISIBILITY RIGHT NOW

HR1902 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -6.7°
Azimuth: 331.6°
Direction: North-North-West

Celestial coordinates and finder chart of HR1902

HR1902 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR1902 are provided in the following table:

Right Ascension J2000 05h 37m 08s

Declination J2000 +26° 55’ 27”

Galactic Longitude 180.72°

Galactic Latitude -2.65°

Constellation Taurus

The simplified sky map below shows the position of HR1902 in the sky:

Simplified finder chart for HR1902.

Visibility of HR1902 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 HR1902 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: 63.1° RISE 21:26

Max altitude: 65.4° TRANSIT 6:06

Azimuth: 296.9° SET 14:42

Digitized Sky Survey image of HR1902

The image below is a photograph of HR1902 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 HR1902 is 0.011 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 HR1902. The red arrow shows the motion of HR1902 during the next 10000 years (1.83 arcmin in Right Ascension and -4.17 arcmin in declination);

Distance of HR1902 from the Sun and relative movement

HR1902 is distant 477.31 light years from the Sun and it is moving far from the Sun at the speed of 10 kilometers per second.

Distance (parsec) 146.41 pc

Distance (light year) 477.31 ly

Heliocentric radial velocity 10 km/s

Proper Motion RA 0.011 arcsec/year

Proper Motion Dec -0.025 arcsec/year

Spectral properties of HR1902

HR1902 belongs to spectral class B9 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 0.00

Spectral Type B9IV

Color Index (B-V) -0.07

Temperature of HR1902 11092K

The red dot in the diagram below shows where HR1902 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1902. Attribution: Richard Powell / CC BY-SA

HR1902 star system properties

HR1902 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR1902 double sysyem:

Main star magnitude 5.83

Secondary star magnitude 5.93

Magnitude difference 0.1

Separation 1.1 arcsec

Alternative designations of HR1902

Henry Draper Catalogue HD37098

SAO Catalogue SAO77322

Hipparcos Catalogue HIP26396

Durchmusterung Catalogue BD+26 870

General Catalogue of Variable Stars 2426

Aitken Double Star Catalogue ADS4208

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