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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:43  
clear_day Transit: 11:47  
SunsetSet: 15:52 south
sleep NighttimeWhat's Visible Now?
All Constellations » Aquarius » 

ζ1 Aquarii (zeta1 Aquarii)

Altitude: -36.5°   Azimuth: 338.5°   Direction: North-North-West

ζ1 Aquarii is a multiple sub-giant star in the constellation of Aquarius.

ζ1 Aquarii visual magnitude is 4.59. Because of its moderate brightness, ζ1 Aquarii 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 ζ1 Aquarii:


ζ1 Aquarii (zeta1 Aquarii) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -36.5°
Azimuth: 338.5°
Direction: North-North-West

Celestial coordinates and finder chart of ζ1 Aquarii

ζ1 Aquarii 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 ζ1 Aquarii are provided in the following table:

22h 28m 49s
-00° 01’ 13”

The simplified sky map below shows the position of ζ1 Aquarii in the sky:

Finder chart ζ1 Aquarii (zeta1 Aquarii) star
Simplified finder chart for ζ1 Aquarii (zeta1 Aquarii).

Visibility of ζ1 Aquarii from your location

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

Today's ζ1 Aquarii (zeta1 Aquarii) rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 90.0°
Max altitude: 38.5°
Azimuth: 270.0°

Digitized Sky Survey image of ζ1 Aquarii

The image below is a photograph of ζ1 Aquarii 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 ζ1 Aquarii is 0.181 arcsec per year in Right Ascension and 0.009 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of ζ1 Aquarii (zeta1 Aquarii) star
DSS2 image of ζ1 Aquarii. The red arrow shows the motion of ζ1 Aquarii during the next 1000 years (3.02 arcmin in Right Ascension and 0.15 arcmin in declination);

Distance of ζ1 Aquarii from the Sun and relative movement

ζ1 Aquarii is distant 103.39 light years from the Sun and it is moving far from the Sun at the speed of 29 kilometers per second.

31.72 pc
103.39 ly
29 km/s
0.181 arcsec/year
0.009 arcsec/year

Spectral properties of ζ1 Aquarii

ζ1 Aquarii belongs to spectral class F6 and has a luminosity class of IV corresponding to a sub-giant star.


The red dot in the diagram below shows where ζ1 Aquarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ζ1 Aquarii. Attribution: Richard Powell / CC BY-SA

ζ1 Aquarii star system properties

ζ1 Aquarii is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the ζ1 Aquarii double sysyem:

1.8 arcsec

Alternative designations of ζ1 Aquarii

ζ1 Aquarii
(zeta1 Aquarii)