HR857

HR857 is a variable main-sequence star in the constellation of Eridanus.

HR857 visual magnitude is 6.04. Because of its reltive faintness, HR857 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 HR857:

Color of HR857 ⬤

Magnitude of HR857 6.04

Class Main-sequence

VISIBILITY RIGHT NOW HR857 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR857

HR857 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 HR857 are provided in the following table:

Right Ascension J2000 02h 52m 32s

Declination J2000 -12° 46’ 09”

Galactic Longitude 192.06°

Galactic Latitude -58.26°

Constellation Eridanus

The simplified sky map below shows the position of HR857 in the sky:

Simplified finder chart for HR857.

Visibility of HR857 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR857 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 102.8° RISE 10:08

Max altitude: 25.8° TRANSIT 15:00

Azimuth: 257.2° SET 19:53

RIGHT NOW HR857 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR857

The image below is a photograph of HR857 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 HR857 is 0.394 arcsec per year in Right Ascension and -0.175 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR857. The red arrow shows the motion of HR857 during the next 1000 years (6.57 arcmin in Right Ascension and -2.92 arcmin in declination);

Distance of HR857 from the Sun and relative movement

HR857 is distant 33.84 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

Distance (parsec) 10.38 pc

Distance (light year) 33.84 ly

Heliocentric radial velocity 19 km/s

Proper Motion RA 0.394 arcsec/year

Proper Motion Dec -0.175 arcsec/year

Spectral properties of HR857

HR857 belongs to spectral class K2 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 5.96

Spectral Type K2V

Color Index (B-V) 0.87

Temperature of HR857 5078K

The red dot in the diagram below shows where HR857 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR857. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR857

Henry Draper Catalogue HD17925

SAO Catalogue SAO148647

Hipparcos Catalogue HIP13402

Durchmusterung Catalogue BD-13 544

Gliese Catalogue Gl 117

General Catalogue of Variable Stars 975

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In Evidence

Other stars in Eridanus