ζ1 Aquarii (zeta1 Aquarii)

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:

Color of ζ1 Aquarii ⬤

Magnitude of ζ1 Aquarii 4.59

Class Sub-giant

VISIBILITY RIGHT NOW ζ1 Aquarii (zeta1 Aquarii) is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 37°.

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:

Right Ascension J2000 22h 28m 49s

Declination J2000 -00° 01’ 13”

Galactic Longitude 65.35°

Galactic Latitude -46.33°

Constellation Aquarius

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° RISE 0:49

Max altitude: 38.5° TRANSIT 6:50

Azimuth: 270.0° SET 12:48

RIGHT NOW ζ1 Aquarii (zeta1 Aquarii) is above the horizon from Greenwich, United Kingdom

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.

Distance (parsec) 31.72 pc

Distance (light year) 103.39 ly

Heliocentric radial velocity 29 km/s

Proper Motion RA 0.181 arcsec/year

Proper Motion Dec 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.

Absolute magnitude 2.08

Spectral Type F6IV

Color Index (B-V)

Temperature of ζ1 Aquarii 10125K

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

Main star magnitude 4.59

Secondary star magnitude 4.79

Magnitude difference 0.2

Separation 1.8 arcsec

Alternative designations of ζ1 Aquarii

Bayer designation ζ1 Aquarii
(zeta1 Aquarii)

Flamsteed designation 55 Aquarii

Henry Draper Catalogue HD213051

SAO Catalogue SAO146107

Hipparcos Catalogue HIP110960

Durchmusterung Catalogue BD-00 4365

Aitken Double Star Catalogue ADS15971

In Evidence

Other stars in Aquarius