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public LocationGreenwich, UK
TimezoneEurope/London
Sunrise: 4:43 
Transit: 13:01 
Sunset: 21:18
wb_twilight   (Astronomical Twilight)   What's Visible Now?
All Constellations » Sagittarius » 

θ2 Sagittarii (theta2 Sagittarii)

Below the horizon.  Rise: 0:47 | Tran: 2:48 | Set: 4:46
Altitude: -4.8°   Azimuth: 144.4°   Direction: South-East

θ2 Sagittarii is a multiple sub-giant star of spectral class A4 in the constellation of Sagittarius.

θ2 Sagittarii visual magnitude is 5.3. Because of its faintness, θ2 Sagittarii is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Celestial coordinates and finder chart of θ2 Sagittarii

Finder chart θ2 Sagittarii (theta2 Sagittarii) star
Simplified finder chart for θ2 Sagittarii (theta2 Sagittarii).

θ2 Sagittarii is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of θ2 Sagittarii are provided in the following table:

19h 59m 51s
-34° 41’ 52”
6.17°
-28.34°
Sagittarius
Image of θ2 Sagittarii (theta2 Sagittarii) star
DSS2 image of θ2 Sagittarii. The red arrow shows the motion of θ2 Sagittarii during the next 1000 years (1.67 arcmin in Right Ascension and -1.25 arcmin in declination);

Key facts about θ2 Sagittarii

5.3
Sub-giant

and has a luminosity class of IV corresponding to a sub-giant star.

1.89
A4IV
8403K

The red dot in the diagram below shows where θ2 Sagittarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of θ2 Sagittarii. Attribution: Richard Powell / CC BY-SA

θ2 Sagittarii star system properties

θ2 Sagittarii is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the θ2 Sagittarii double sysyem:

5.3
10.8
5.5
30 arcsec

Distance of θ2 Sagittarii from the Sun and relative movement

θ2 Sagittarii is distant 156.66 light years from the Sun and it is moving towards the Sun at the speed of 18 kilometers per second.

48.05 pc
156.66 ly
-18 km/s
0.1 arcsec/year
-0.075 arcsec/year

Alternative designations of θ2 Sagittarii

θ2 Sagittarii
(theta2 Sagittarii)
SAO211717
SAO211717

Visibility of θ2 Sagittarii from your location

Today's θ2 Sagittarii (theta2 Sagittarii) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 124.7°
Max altitude: 3.8°
Azimuth: 235.3°