Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:38  ☀️ Transit: 13:03  🌅 Sunset: 19:28

Ancha - θ Aquarii (theta Aquarii)

Ancha, also designated as θ Aquarii (theta Aquarii), is a giant star in the constellation of Aquarius.

Ancha visual magnitude is 4.16. Because of its moderate brightness, Ancha 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 Ancha:

Ancha - θ Aquarii (theta Aquarii) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of Ancha

Ancha 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 Ancha are provided in the following table:

22h 16m 50s
-07° 46’ 59”

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

Finder chart Ancha - θ Aquarii (theta Aquarii) star
Simplified finder chart for Ancha - θ Aquarii (theta Aquarii).

Visibility of Ancha from your location

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

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

Azimuth: 97.8°
Max altitude: 30.7°
Azimuth: 262.2°
Ancha - θ Aquarii (theta Aquarii) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Ancha

The image below is a photograph of Ancha 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 Ancha is 0.121 arcsec per year in Right Ascension and -0.022 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of Ancha - θ Aquarii (theta Aquarii) star
DSS2 image of Ancha. The red arrow shows the motion of Ancha during the next 1000 years (2.02 arcmin in Right Ascension and -0.37 arcmin in declination);

Distance of Ancha from the Sun and relative movement

Ancha is distant 191.31 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

58.69 pc
191.31 ly
-15 km/s
0.121 arcsec/year
-0.022 arcsec/year

Spectral properties of Ancha

Ancha belongs to spectral class G8 and has a luminosity class of III corresponding to a giant star.


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

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

Alternative designations of Ancha

θ Aquarii
(theta Aquarii)