HR1023

HR1023 is a variable and double giant star in the constellation of Cetus.

HR1023 visual magnitude is 6.38. Because of its reltive faintness, HR1023 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 HR1023:

Color of HR1023 ⬤

Magnitude of HR1023 6.38

Class Giant

VISIBILITY RIGHT NOW HR1023 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR1023

HR1023 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 HR1023 are provided in the following table:

Right Ascension J2000 03h 23m 39s

Declination J2000 +04° 52’ 54”

Galactic Longitude 177.72°

Galactic Latitude -41.26°

Constellation Cetus

The simplified sky map below shows the position of HR1023 in the sky:

Simplified finder chart for HR1023.

Visibility of HR1023 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 HR1023 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: 85.1° RISE 5:22

Max altitude: 43.4° TRANSIT 11:44

Azimuth: 274.9° SET 18:07

RIGHT NOW HR1023 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1023

The image below is a photograph of HR1023 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 HR1023 is 0.006 arcsec per year in Right Ascension and -0.008 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR1023. The red arrow shows the motion of HR1023 during the next 100000 years (10.00 arcmin in Right Ascension and -13.33 arcmin in declination);

Distance of HR1023 from the Sun and relative movement

HR1023 is distant 1,116.44 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 342.47 pc

Distance (light year) 1,116.44 ly

Heliocentric radial velocity 3 km/s

Proper Motion RA 0.006 arcsec/year

Proper Motion Dec -0.008 arcsec/year

Spectral properties of HR1023

HR1023 belongs to spectral class G5 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude -1.29

Spectral Type G5III

Color Index (B-V) 0.86

Temperature of HR1023 5106K

The red dot in the diagram below shows where HR1023 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1023. Attribution: Richard Powell / CC BY-SA

HR1023 star system properties

HR1023 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR1023 double sysyem:

Main star magnitude 6.38

Secondary star magnitude 9.58

Magnitude difference 3.2

Separation 0.9 arcsec

Alternative designations of HR1023

Henry Draper Catalogue HD21018

SAO Catalogue SAO111161

Hipparcos Catalogue HIP15807

Durchmusterung Catalogue BD+04 532

General Catalogue of Variable Stars Var?

Aitken Double Star Catalogue ADS2509

In Evidence

Other stars in Cetus