12 Aquarii

12 Aquarii is a multiple giant star in the constellation of Aquarius.

12 Aquarii visual magnitude is 5.89. Because of its reltive faintness, 12 Aquarii 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 12 Aquarii:

Color of 12 Aquarii ⬤

Magnitude of 12 Aquarii 5.89

Class Giant

VISIBILITY RIGHT NOW 12 Aquarii is above the horizon from Greenwich, United Kingdom [change]. Altitude: 0°.

Celestial coordinates and finder chart of 12 Aquarii

12 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 12 Aquarii are provided in the following table:

Right Ascension J2000 21h 04m 04s

Declination J2000 -05° 49’ 23”

Galactic Longitude 43.66°

Galactic Latitude -32.04°

Constellation Aquarius

The simplified sky map below shows the position of 12 Aquarii in the sky:

Simplified finder chart for 12 Aquarii.

Visibility of 12 Aquarii from your location

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

Today's 12 Aquarii rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 95.8° RISE 3:25

Max altitude: 32.7° TRANSIT 8:53

Azimuth: 264.2° SET 14:22

RIGHT NOW 12 Aquarii is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 12 Aquarii

The image below is a photograph of 12 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 12 Aquarii is 0.018 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 12 Aquarii. The red arrow shows the motion of 12 Aquarii during the next 10000 years (3.00 arcmin in Right Ascension and -1.50 arcmin in declination);

Spectral properties of 12 Aquarii

12 Aquarii belongs to spectral class G4 and has a luminosity class of III corresponding to a giant star.

Spectral Type G4III

Color Index (B-V) 0.68

Temperature of 12 Aquarii 5671K

12 Aquarii star system properties

12 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 12 Aquarii double sysyem:

Main star magnitude 5.89

Secondary star magnitude 7.79

Magnitude difference 1.9

Separation 2.7 arcsec

Alternative designations of 12 Aquarii

Flamsteed designation 12 Aquarii

Henry Draper Catalogue HD200497

SAO Catalogue SAO145065

Durchmusterung Catalogue BD-06 5664

Aitken Double Star Catalogue ADS14592

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