HR4998

Altitude: 42.0° Azimuth: 135.0° Direction: South-East

HR4998 is a double hypergiant star in the constellation of Virgo.

HR4998 visual magnitude is 5.67. Because of its reltive faintness, HR4998 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 HR4998:

Color of HR4998 ⬤

Magnitude of HR4998 5.67

Class Hypergiant

VISIBILITY RIGHT NOW

HR4998 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 42.0°
Azimuth: 135.0°
Direction: South-East

Celestial coordinates and finder chart of HR4998

HR4998 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 HR4998 are provided in the following table:

Right Ascension J2000 13h 14m 31s

Declination J2000 +11° 19’ 54”

Galactic Longitude 322.99°

Galactic Latitude 73.3°

Constellation Virgo

The simplified sky map below shows the position of HR4998 in the sky:

Simplified finder chart for HR4998.

Visibility of HR4998 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 HR4998 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: 78.7° RISE 0:59

Max altitude: 49.9° TRANSIT 7:55

Azimuth: 281.3° SET 14:51

Digitized Sky Survey image of HR4998

The image below is a photograph of HR4998 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 HR4998 is 0.074 arcsec per year in Right Ascension and -0.052 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of HR4998. The red arrow shows the motion of HR4998 during the next 10000 years (12.33 arcmin in Right Ascension and -8.67 arcmin in declination);

Distance of HR4998 from the Sun and relative movement

HR4998 is distant 507.00 light years from the Sun and it is moving far from the Sun at the speed of 12 kilometers per second.

Distance (parsec) 155.52 pc

Distance (light year) 507.00 ly

Heliocentric radial velocity 12 km/s

Proper Motion RA 0.074 arcsec/year

Proper Motion Dec -0.052 arcsec/year

Spectral properties of HR4998

HR4998 belongs to spectral class M0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude -0.29

Spectral Type M0III

Color Index (B-V) 1.5

Temperature of HR4998 3794K

The red dot in the diagram below shows where HR4998 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR4998. Attribution: Richard Powell / CC BY-SA

HR4998 star system properties

HR4998 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 HR4998 double sysyem:

Main star magnitude 5.67

Secondary star magnitude 12.37

Magnitude difference 6.7

Separation 49.1 arcsec

Alternative designations of HR4998

Henry Draper Catalogue HD115046

SAO Catalogue SAO100473

Hipparcos Catalogue HIP64607

Durchmusterung Catalogue BD+12 2572

Aitken Double Star Catalogue ADS8832

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In Evidence

Other stars in Virgo