HR997

Altitude: -18.8° Azimuth: 96.4° Direction: East

HR997 is a double hypergiant star in the constellation of Eridanus.

HR997 visual magnitude is 5.71. Because of its reltive faintness, HR997 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 HR997:

Color of HR997 ⬤

Magnitude of HR997 5.71

Class Hypergiant

VISIBILITY RIGHT NOW

HR997 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -18.8°
Azimuth: 96.4°
Direction: East

Celestial coordinates and finder chart of HR997

HR997 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 HR997 are provided in the following table:

Right Ascension J2000 03h 18m 41s

Declination J2000 -18° 33’ 34”

Galactic Longitude 206.62°

Galactic Latitude -55.15°

Constellation Eridanus

The simplified sky map below shows the position of HR997 in the sky:

Simplified finder chart for HR997.

Visibility of HR997 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 HR997 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: 108.6° RISE 18:13

Max altitude: 20.0° TRANSIT 22:32

Azimuth: 251.4° SET 2:55

Digitized Sky Survey image of HR997

The image below is a photograph of HR997 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 HR997 is 0.136 arcsec per year in Right Ascension and -0.053 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of HR997. The red arrow shows the motion of HR997 during the next 1000 years (2.27 arcmin in Right Ascension and -0.88 arcmin in declination);

Distance of HR997 from the Sun and relative movement

HR997 is distant 119.28 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

Distance (parsec) 36.59 pc

Distance (light year) 119.28 ly

Heliocentric radial velocity 18 km/s

Proper Motion RA 0.136 arcsec/year

Proper Motion Dec -0.053 arcsec/year

Spectral properties of HR997

HR997 belongs to spectral class F0 and has a luminosity class of IV corresponding to a hypergiant star.

Absolute magnitude 2.89

Spectral Type F0IV

Color Index (B-V) 0.37

Temperature of HR997 7044K

The red dot in the diagram below shows where HR997 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR997. Attribution: Richard Powell / CC BY-SA

HR997 star system properties

HR997 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 HR997 double sysyem:

Main star magnitude 5.71

Secondary star magnitude 8.01

Magnitude difference 2.3

Separation 7.2 arcsec

Alternative designations of HR997

Henry Draper Catalogue HD20631

SAO Catalogue SAO148897

Hipparcos Catalogue HIP15411

Durchmusterung Catalogue BD-19 651

Aitken Double Star Catalogue ADS2465

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In Evidence

Other stars in Eridanus