31 Virginis

Altitude: -31.7° Azimuth: 0.3° Direction: North

31 Virginis is a variable and double main-sequence star in the constellation of Virgo.

31 Virginis visual magnitude is 5.59. Because of its reltive faintness, 31 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 31 Virginis:

Color of 31 Virginis ⬤

Magnitude of 31 Virginis 5.59

Class Main-sequence

VISIBILITY RIGHT NOW

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

Altitude: -31.7°
Azimuth: 0.3°
Direction: North

Celestial coordinates and finder chart of 31 Virginis

31 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 31 Virginis are provided in the following table:

Right Ascension J2000 12h 41m 57s

Declination J2000 +06° 48’ 24”

Galactic Longitude 296.18°

Galactic Latitude 69.55°

Constellation Virgo

The simplified sky map below shows the position of 31 Virginis in the sky:

Simplified finder chart for 31 Virginis.

Visibility of 31 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 31 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: 83.2° RISE 1:22

Max altitude: 45.3° TRANSIT 7:54

Azimuth: 276.8° SET 14:26

Digitized Sky Survey image of 31 Virginis

The image below is a photograph of 31 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 31 Virginis is -0.068 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 31 Virginis. The red arrow shows the motion of 31 Virginis during the next 10000 years (-11.33 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of 31 Virginis from the Sun and relative movement

31 Virginis is distant 243.83 light years from the Sun and it is moving far from the Sun at the speed of 4 kilometers per second.

Distance (parsec) 74.79 pc

Distance (light year) 243.83 ly

Heliocentric radial velocity 4 km/s

Proper Motion RA -0.068 arcsec/year

Proper Motion Dec -0.012 arcsec/year

Spectral properties of 31 Virginis

31 Virginis belongs to spectral class A2 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 1.22

Spectral Type A2V

Color Index (B-V) 0

Temperature of 31 Virginis 10125K

The red dot in the diagram below shows where 31 Virginis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 31 Virginis. Attribution: Richard Powell / CC BY-SA

31 Virginis star system properties

31 Virginis 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 31 Virginis double sysyem:

Main star magnitude 5.59

Secondary star magnitude 11.39

Magnitude difference 5.8

Separation 4 arcsec

Alternative designations of 31 Virginis

Flamsteed designation 31 Virginis

Henry Draper Catalogue HD110423

SAO Catalogue SAO119538

Hipparcos Catalogue HIP61968

Durchmusterung Catalogue BD+07 2568

General Catalogue of Variable Stars 5867

Aitken Double Star Catalogue ADS8633

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In Evidence

Other stars in Virgo