HR1887

Altitude: -40.2° Azimuth: 327.4° Direction: North-North-West

HR1887 is a double hypergiant star in the constellation of Orion.

HR1887 visual magnitude is 4.78. Because of its moderate brightness, HR1887 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR1887:

Color of HR1887 ⬤

Magnitude of HR1887 4.78

Class Hypergiant

VISIBILITY RIGHT NOW

HR1887 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -40.2°
Azimuth: 327.4°
Direction: North-North-West

Celestial coordinates and finder chart of HR1887

HR1887 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 HR1887 are provided in the following table:

Right Ascension J2000 05h 35m 02s

Declination J2000 -06° 00’ 06”

Galactic Longitude 209.56°

Galactic Latitude -19.71°

Constellation Orion

The simplified sky map below shows the position of HR1887 in the sky:

Simplified finder chart for HR1887.

Visibility of HR1887 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 HR1887 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: 96.0° RISE 1:07

Max altitude: 32.5° TRANSIT 6:35

Azimuth: 264.0° SET 12:03

Digitized Sky Survey image of HR1887

The image below is a photograph of HR1887 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 HR1887 is 0.004 arcsec per year in Right Ascension and 0.002 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR1887. The red arrow shows the motion of HR1887 during the next 100000 years (6.67 arcmin in Right Ascension and 3.33 arcmin in declination);

Distance of HR1887 from the Sun and relative movement

HR1887 is distant 1,862.86 light years from the Sun and it is moving far from the Sun at the speed of 28 kilometers per second.

Distance (parsec) 571.43 pc

Distance (light year) 1,862.86 ly

Heliocentric radial velocity 28 km/s

Proper Motion RA 0.004 arcsec/year

Proper Motion Dec 0.002 arcsec/year

Spectral properties of HR1887

HR1887 belongs to spectral class B0 and has a luminosity class of V corresponding to a hypergiant star.

Absolute magnitude -4.00

Spectral Type B0V

Color Index (B-V) -0.25

Temperature of HR1887 14924K

The red dot in the diagram below shows where HR1887 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1887. Attribution: Richard Powell / CC BY-SA

HR1887 star system properties

HR1887 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR1887 double sysyem:

Main star magnitude 4.78

Secondary star magnitude 5.68

Magnitude difference 0.9

Separation 36.2 arcsec

Alternative designations of HR1887

Henry Draper Catalogue HD36960

SAO Catalogue SAO132301

Hipparcos Catalogue HIP26199

Durchmusterung Catalogue BD-06 1234

Aitken Double Star Catalogue ADS4182

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In Evidence

Other stars in Orion