25 Sagittarii

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

25 Sagittarii visual magnitude is 6.51. Because of its reltive faintness, 25 Sagittarii 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 25 Sagittarii:

Color of 25 Sagittarii ⬤

Magnitude of 25 Sagittarii 6.51

Class Bright giant

VISIBILITY RIGHT NOW 25 Sagittarii is above the horizon from Greenwich, United Kingdom [change]. Altitude: 7°.

Celestial coordinates and finder chart of 25 Sagittarii

25 Sagittarii 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 25 Sagittarii are provided in the following table:

Right Ascension J2000 18h 34m 32s

Declination J2000 -24° 13’ 21”

Galactic Longitude 9.42°

Galactic Latitude -7.31°

Constellation Sagittarius

The simplified sky map below shows the position of 25 Sagittarii in the sky:

Simplified finder chart for 25 Sagittarii.

Visibility of 25 Sagittarii from your location

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

Today's 25 Sagittarii rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 114.2° RISE 3:16

Max altitude: 14.3° TRANSIT 6:57

Azimuth: 245.8° SET 10:38

RIGHT NOW 25 Sagittarii is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 25 Sagittarii

The image below is a photograph of 25 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 25 Sagittarii is 0.001 arcsec per year in Right Ascension and -0.001 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of 25 Sagittarii. The red arrow shows the motion of 25 Sagittarii during the next 100000 years (1.67 arcmin in Right Ascension and -1.67 arcmin in declination);

Distance of 25 Sagittarii from the Sun and relative movement

25 Sagittarii is distant 3,227.72 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

Distance (parsec) 990.10 pc

Distance (light year) 3,227.72 ly

Heliocentric radial velocity 8 km/s

Proper Motion RA 0.001 arcsec/year

Proper Motion Dec -0.001 arcsec/year

Spectral properties of 25 Sagittarii

25 Sagittarii belongs to spectral class F3 and has a luminosity class of II corresponding to a bright giant star.

Absolute magnitude -3.47

Spectral Type F3II

Color Index (B-V) 0.54

Temperature of 25 Sagittarii 6213K

The red dot in the diagram below shows where 25 Sagittarii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 25 Sagittarii. Attribution: Richard Powell / CC BY-SA

Alternative designations of 25 Sagittarii

Flamsteed designation 25 Sagittarii

Henry Draper Catalogue HD171237

SAO Catalogue SAO186995

Hipparcos Catalogue HIP91066

Durchmusterung Catalogue CD-2414479

General Catalogue of Variable Stars 11035

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Other stars in Sagittarius