30 Aquarii

30 Aquarii is a hypergiant star in the constellation of Aquarius.

30 Aquarii visual magnitude is 5.54. Because of its reltive faintness, 30 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 30 Aquarii:

Color of 30 Aquarii ⬤

Magnitude of 30 Aquarii 5.54

Class Hypergiant

VISIBILITY RIGHT NOW 30 Aquarii is above the horizon from Greenwich, United Kingdom [change]. Altitude: 25°.

Celestial coordinates and finder chart of 30 Aquarii

30 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 30 Aquarii are provided in the following table:

Right Ascension J2000 22h 03m 16s

Declination J2000 -06° 31’ 20”

Galactic Longitude 52.41°

Galactic Latitude -45.11°

Constellation Aquarius

The simplified sky map below shows the position of 30 Aquarii in the sky:

Simplified finder chart for 30 Aquarii.

Visibility of 30 Aquarii from your location

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

Today's 30 Aquarii rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 96.5° RISE 4:56

Max altitude: 32.0° TRANSIT 10:21

Azimuth: 263.5° SET 15:46

RIGHT NOW 30 Aquarii is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 30 Aquarii

The image below is a photograph of 30 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 30 Aquarii is 0.045 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 30 Aquarii. The red arrow shows the motion of 30 Aquarii during the next 10000 years (7.50 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of 30 Aquarii from the Sun and relative movement

30 Aquarii is distant 271.21 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

Distance (parsec) 83.19 pc

Distance (light year) 271.21 ly

Heliocentric radial velocity 30 km/s

Proper Motion RA 0.045 arcsec/year

Proper Motion Dec 0.006 arcsec/year

Spectral properties of 30 Aquarii

30 Aquarii belongs to spectral class K0 and has a luminosity class of III corresponding to a hypergiant star.

Absolute magnitude 0.94

Spectral Type K0III

Color Index (B-V) 0.96

Temperature of 30 Aquarii 4841K

The red dot in the diagram below shows where 30 Aquarii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 30 Aquarii. Attribution: Richard Powell / CC BY-SA

Alternative designations of 30 Aquarii

Flamsteed designation 30 Aquarii

Henry Draper Catalogue HD209396

SAO Catalogue SAO145836

Hipparcos Catalogue HIP108868

Durchmusterung Catalogue BD-07 5688

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Other stars in Aquarius