HR4877

Altitude: 16.3° Azimuth: 228.1° Direction: South-West

HR4877 is a variable and multiple giant star in the constellation of Virgo.

HR4877 visual magnitude is 6.41. Because of its reltive faintness, HR4877 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 HR4877:

Color of HR4877 ⬤

Magnitude of HR4877 6.41

Class Giant

VISIBILITY RIGHT NOW

HR4877 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 16.3°
Azimuth: 228.1°
Direction: South-West

Celestial coordinates and finder chart of HR4877

HR4877 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 HR4877 are provided in the following table:

Right Ascension J2000 12h 51m 22s

Declination J2000 -10° 20’ 17”

Galactic Longitude 302.91°

Galactic Latitude 52.53°

Constellation Virgo

The simplified sky map below shows the position of HR4877 in the sky:

Simplified finder chart for HR4877.

Visibility of HR4877 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 HR4877 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: 100.3° RISE 2:34

Max altitude: 28.2° TRANSIT 7:40

Azimuth: 259.7° SET 12:45

Digitized Sky Survey image of HR4877

The image below is a photograph of HR4877 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 HR4877 is -0.008 arcsec per year in Right Ascension and -0.006 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR4877. The red arrow shows the motion of HR4877 during the next 100000 years (-13.33 arcmin in Right Ascension and -10.00 arcmin in declination);

Distance of HR4877 from the Sun and relative movement

HR4877 is distant 385.80 light years from the Sun and it is moving towards the Sun at the speed of 17 kilometers per second.

Distance (parsec) 118.34 pc

Distance (light year) 385.80 ly

Heliocentric radial velocity -17 km/s

Proper Motion RA -0.008 arcsec/year

Proper Motion Dec -0.006 arcsec/year

Spectral properties of HR4877

HR4877 belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 1.04

Spectral Type G8III

Color Index (B-V) 1.02

Temperature of HR4877 4695K

The red dot in the diagram below shows where HR4877 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4877. Attribution: Richard Powell / CC BY-SA

HR4877 star system properties

HR4877 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR4877 double sysyem:

Main star magnitude 6.41

Secondary star magnitude 9.71

Magnitude difference 3.3

Separation 30.2 arcsec

Alternative designations of HR4877

Henry Draper Catalogue HD111720

SAO Catalogue SAO157550

Hipparcos Catalogue HIP62743

Durchmusterung Catalogue BD-09 3569

General Catalogue of Variable Stars 5994

Aitken Double Star Catalogue ADS8684

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In Evidence

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