HR1987

HR1987 is a double giant star in the constellation of Orion.

HR1987 visual magnitude is 5.79. Because of its reltive faintness, HR1987 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 HR1987:

Color of HR1987 ⬤

Magnitude of HR1987 5.79

Class Giant

VISIBILITY RIGHT NOW HR1987 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 36°.

Celestial coordinates and finder chart of HR1987

HR1987 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 HR1987 are provided in the following table:

Right Ascension J2000 05h 46m 52s

Declination J2000 +09° 31’ 19”

Galactic Longitude 196.9°

Galactic Latitude -9.71°

Constellation Orion

The simplified sky map below shows the position of HR1987 in the sky:

Simplified finder chart for HR1987.

Visibility of HR1987 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 HR1987 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: 80.5° RISE 7:13

Max altitude: 48.0° TRANSIT 13:59

Azimuth: 279.5° SET 20:46

RIGHT NOW HR1987 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1987

The image below is a photograph of HR1987 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 HR1987 is -0.034 arcsec per year in Right Ascension and -0.065 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR1987. The red arrow shows the motion of HR1987 during the next 10000 years (-5.67 arcmin in Right Ascension and -10.83 arcmin in declination);

Distance of HR1987 from the Sun and relative movement

HR1987 is distant 299.63 light years from the Sun and it is moving towards the Sun at the speed of 26 kilometers per second.

Distance (parsec) 91.91 pc

Distance (light year) 299.63 ly

Heliocentric radial velocity -26 km/s

Proper Motion RA -0.034 arcsec/year

Proper Motion Dec -0.065 arcsec/year

Spectral properties of HR1987

HR1987 belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.97

Spectral Type G8III

Color Index (B-V) 0.88

Temperature of HR1987 5051K

The red dot in the diagram below shows where HR1987 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1987. Attribution: Richard Powell / CC BY-SA

HR1987 star system properties

HR1987 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR1987 double sysyem:

Main star magnitude 5.79

Secondary star magnitude 11.69

Magnitude difference 5.9

Separation 17.2 arcsec

Alternative designations of HR1987

Henry Draper Catalogue HD38527

SAO Catalogue SAO113124

Hipparcos Catalogue HIP27280

Durchmusterung Catalogue BD+09 954

FK5 Catalogue 2432

Aitken Double Star Catalogue ADS4369

In Evidence

Other stars in Orion