Your guide to the Solar System and the night sky
By donating now you help keep this site alive and free from ads. Please consider supporting this project.
🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 5:59  ☀️ Transit: 12:05  🌅 Sunset: 18:13

ψ2 Aquarii (psi2 Aquarii)

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:

ψ2 Aquarii (psi2 Aquarii) is below the horizon from Greenwich, United Kingdom [change].

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:

23h 17m 54s
-09° 10’ 56”

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 [change]
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 [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 99.2°
Max altitude: 29.3°
Azimuth: 260.8°
ψ2 Aquarii (psi2 Aquarii) is below the horizon from Greenwich, United Kingdom

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.

Image of ψ2 Aquarii (psi2 Aquarii) star
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.

98.72 pc
321.82 ly
-6 km/s
0.021 arcsec/year
-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.


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

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

Alternative designations of ψ2 Aquarii

ψ2 Aquarii
(psi2 Aquarii)