73 Virginis

Altitude: -6.9° Azimuth: 248.4° Direction: West-South-West

73 Virginis is a variable and double hypergiant star in the constellation of Virgo.

73 Virginis visual magnitude is 6.01. Because of its reltive faintness, 73 Virginis 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 73 Virginis:

Color of 73 Virginis ⬤

Magnitude of 73 Virginis 6.01

Class Hypergiant

VISIBILITY RIGHT NOW

73 Virginis is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -6.9°
Azimuth: 248.4°
Direction: West-South-West

Celestial coordinates and finder chart of 73 Virginis

73 Virginis 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 73 Virginis are provided in the following table:

Right Ascension J2000 13h 32m 02s

Declination J2000 -18° 43’ 44”

Galactic Longitude 316.15°

Galactic Latitude 43.1°

Constellation Virgo

The simplified sky map below shows the position of 73 Virginis in the sky:

Simplified finder chart for 73 Virginis.

Visibility of 73 Virginis 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 73 Virginis 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: 108.7° RISE 3:55

Max altitude: 19.8° TRANSIT 8:12

Azimuth: 251.3° SET 12:30

Digitized Sky Survey image of 73 Virginis

The image below is a photograph of 73 Virginis 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 73 Virginis is -0.099 arcsec per year in Right Ascension and -0.014 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of 73 Virginis. The red arrow shows the motion of 73 Virginis during the next 1000 years (-1.65 arcmin in Right Ascension and -0.23 arcmin in declination);

Distance of 73 Virginis from the Sun and relative movement

73 Virginis is distant 233.86 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

Distance (parsec) 71.74 pc

Distance (light year) 233.86 ly

Heliocentric radial velocity -18 km/s

Proper Motion RA -0.099 arcsec/year

Proper Motion Dec -0.014 arcsec/year

Spectral properties of 73 Virginis

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

Absolute magnitude 1.73

Spectral Type F0IV

Color Index (B-V) 0.18

Temperature of 73 Virginis 8321K

The red dot in the diagram below shows where 73 Virginis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 73 Virginis. Attribution: Richard Powell / CC BY-SA

73 Virginis star system properties

73 Virginis is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the 73 Virginis double sysyem:

Main star magnitude 6.01

Secondary star magnitude 6.21

Magnitude difference 0.2

Separation 0.1 arcsec

Alternative designations of 73 Virginis

Flamsteed designation 73 Virginis

Henry Draper Catalogue HD117661

SAO Catalogue SAO157987

Hipparcos Catalogue HIP66015

Durchmusterung Catalogue BD-17 3877

FK5 Catalogue 3078

General Catalogue of Variable Stars HX Vir

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