ψ2 Aquarii (psi2 Aquarii)

Altitude: -35.3° Azimuth: 54.8° Direction: North-East

ψ2 Aquarii is a main-sequence star in the constellation of Aquarius.

ψ2 Aquarii visual magnitude is 4.39. Because of its moderate brightness, ψ2 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 ψ2 Aquarii:

Color of ψ2 Aquarii ⬤

Magnitude of ψ2 Aquarii 4.39

Class Main-sequence

VISIBILITY RIGHT NOW

ψ2 Aquarii (psi2 Aquarii) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -35.3°
Azimuth: 54.8°
Direction: North-East

Celestial coordinates and finder chart of ψ2 Aquarii

ψ2 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 ψ2 Aquarii are provided in the following table:

Right Ascension J2000 23h 17m 54s

Declination J2000 -09° 10’ 56”

Galactic Longitude 67.62°

Galactic Latitude -61.54°

Constellation Aquarius

The simplified sky map below shows the position of ψ2 Aquarii in the sky:

Finder chart ψ2 Aquarii (psi2 Aquarii) star

Simplified finder chart for ψ2 Aquarii (psi2 Aquarii).

Visibility of ψ2 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 ψ2 Aquarii (psi2 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: 99.2° RISE 18:13

Max altitude: 29.3° TRANSIT 23:24

Azimuth: 260.8° SET 4:39

Digitized Sky Survey image of ψ2 Aquarii

The image below is a photograph of ψ2 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 ψ2 Aquarii is 0.021 arcsec per year in Right Ascension and -0.012 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of ψ2 Aquarii. The red arrow shows the motion of ψ2 Aquarii during the next 10000 years (3.50 arcmin in Right Ascension and -2.00 arcmin in declination);

Distance of ψ2 Aquarii from the Sun and relative movement

ψ2 Aquarii is distant 321.82 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

Distance (parsec) 98.72 pc

Distance (light year) 321.82 ly

Heliocentric radial velocity -6 km/s

Proper Motion RA 0.021 arcsec/year

Proper Motion Dec -0.012 arcsec/year

Spectral properties of ψ2 Aquarii

ψ2 Aquarii belongs to spectral class B5 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -0.58

Spectral Type B5V

Color Index (B-V) -0.15

Temperature of ψ2 Aquarii 12489K

The red dot in the diagram below shows where ψ2 Aquarii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of ψ2 Aquarii. Attribution: Richard Powell / CC BY-SA

Alternative designations of ψ2 Aquarii

Bayer designation ψ2 Aquarii
(psi2 Aquarii)

Flamsteed designation 93 Aquarii

Henry Draper Catalogue HD219688

SAO Catalogue SAO146620

Hipparcos Catalogue HIP115033

Durchmusterung Catalogue BD-09 6160

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In Evidence

Other stars in Aquarius