HR6621

HR6621 is a variable sub-giant star in the constellation of Sagittarius.

HR6621 visual magnitude is 6.35. Because of its reltive faintness, HR6621 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 HR6621:

Color of HR6621 ⬤

Magnitude of HR6621 6.35

Class Sub-giant

VISIBILITY RIGHT NOW HR6621 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 2°.

Celestial coordinates and finder chart of HR6621

HR6621 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR6621 are provided in the following table:

Right Ascension J2000 17h 48m 27s

Declination J2000 -26° 58’ 30”

Galactic Longitude 2°

Galactic Latitude 0.48°

Constellation Sagittarius

The simplified sky map below shows the position of HR6621 in the sky:

Simplified finder chart for HR6621.

Visibility of HR6621 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR6621 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 117.0° RISE 3:14

Max altitude: 11.5° TRANSIT 6:34

Azimuth: 243.0° SET 9:54

RIGHT NOW HR6621 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR6621

The image below is a photograph of HR6621 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 HR6621 is 0 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 HR6621. The red arrow shows the motion of HR6621 during the next 10000 years (0.00 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of HR6621 from the Sun and relative movement

HR6621 is distant 1,135.89 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

Distance (parsec) 348.43 pc

Distance (light year) 1,135.89 ly

Heliocentric radial velocity 9 km/s

Proper Motion Dec -0.012 arcsec/year

Spectral properties of HR6621

HR6621 belongs to spectral class B4 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude -1.36

Spectral Type B4IV

Color Index (B-V) 0.12

Temperature of HR6621 8839K

The red dot in the diagram below shows where HR6621 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6621. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6621

Henry Draper Catalogue HD161756

SAO Catalogue SAO185779

Hipparcos Catalogue HIP87163

Durchmusterung Catalogue CD-2612367

General Catalogue of Variable Stars V3894 Sgr

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Other stars in Sagittarius