HR1957

Altitude: -5.7° Azimuth: 99.6° Direction: East

HR1957 is a variable giant star in the constellation of Orion.

HR1957 visual magnitude is 6.52. Because of its reltive faintness, HR1957 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 HR1957:

Color of HR1957 ⬤

Magnitude of HR1957 6.52

Class Giant

VISIBILITY RIGHT NOW

HR1957 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -5.7°
Azimuth: 99.6°
Direction: East

Celestial coordinates and finder chart of HR1957

HR1957 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 HR1957 are provided in the following table:

Right Ascension J2000 05h 40m 45s

Declination J2000 -10° 24’ 33”

Galactic Longitude 214.44°

Galactic Latitude -20.37°

Constellation Orion

The simplified sky map below shows the position of HR1957 in the sky:

Simplified finder chart for HR1957.

Visibility of HR1957 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 HR1957 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: 100.4° RISE 19:37

Max altitude: 28.1° TRANSIT 0:46

Azimuth: 259.6° SET 5:51

Digitized Sky Survey image of HR1957

The image below is a photograph of HR1957 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 HR1957 is -0.03 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR1957. The red arrow shows the motion of HR1957 during the next 10000 years (-5.00 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of HR1957 from the Sun and relative movement

HR1957 is distant 536.18 light years from the Sun and it is moving far from the Sun at the speed of 20 kilometers per second.

Distance (parsec) 164.47 pc

Distance (light year) 536.18 ly

Heliocentric radial velocity 20 km/s

Proper Motion RA -0.03 arcsec/year

Proper Motion Dec -0.03 arcsec/year

Spectral properties of HR1957

HR1957 belongs to spectral class B9 and has a luminosity class of III corresponding to a giant star. HR1957 is also a Si chemically peculiar star.

Absolute magnitude 0.44

Spectral Type B9III

Color Index (B-V) -0.16

Temperature of HR1957 12692K

The red dot in the diagram below shows where HR1957 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1957. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1957

Henry Draper Catalogue HD37808

SAO Catalogue SAO150680

Hipparcos Catalogue HIP26728

Durchmusterung Catalogue BD-10 1258

General Catalogue of Variable Stars V1051 Ori

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In Evidence

Other stars in Orion