3 Sagittarii

3 Sagittarii is a variable bright giant star in the constellation of Sagittarius.

3 Sagittarii visual magnitude is 4.54. Because of its moderate brightness, 3 Sagittarii should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about 3 Sagittarii:

Color of 3 Sagittarii ⬤

Magnitude of 3 Sagittarii 4.54

Class Bright giant

VISIBILITY RIGHT NOW 3 Sagittarii is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of 3 Sagittarii

3 Sagittarii 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 3 Sagittarii are provided in the following table:

Right Ascension J2000 17h 47m 33s

Declination J2000 -27° 49’ 50”

Galactic Longitude 1.17°

Galactic Latitude 0.21°

Constellation Sagittarius

The simplified sky map below shows the position of 3 Sagittarii in the sky:

Simplified finder chart for 3 Sagittarii.

Visibility of 3 Sagittarii from your location

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

Today's 3 Sagittarii rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 117.8° RISE 2:44

Max altitude: 10.7° TRANSIT 5:57

Azimuth: 242.2° SET 9:10

RIGHT NOW 3 Sagittarii is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 3 Sagittarii

The image below is a photograph of 3 Sagittarii 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 3 Sagittarii is -0.001 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of 3 Sagittarii. The red arrow shows the motion of 3 Sagittarii during the next 100000 years (-1.67 arcmin in Right Ascension and -15.00 arcmin in declination);

Distance of 3 Sagittarii from the Sun and relative movement

3 Sagittarii is distant 1,075.91 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 330.03 pc

Distance (light year) 1,075.91 ly

Heliocentric radial velocity -13 km/s

Proper Motion RA -0.001 arcsec/year

Proper Motion Dec -0.009 arcsec/year

Spectral properties of 3 Sagittarii

3 Sagittarii belongs to spectral class F7 and has a luminosity class of II corresponding to a bright giant star.

Absolute magnitude -3.05

Spectral Type F7II

Color Index (B-V) 0.8

Temperature of 3 Sagittarii 5281K

The red dot in the diagram below shows where 3 Sagittarii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 3 Sagittarii. Attribution: Richard Powell / CC BY-SA

Alternative designations of 3 Sagittarii

Flamsteed designation 3 Sagittarii

Henry Draper Catalogue HD161592

SAO Catalogue SAO185755

Hipparcos Catalogue HIP87072

Durchmusterung Catalogue CD-2711930

FK5 Catalogue 1464

General Catalogue of Variable Stars X Sgr

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