7 Aquarii

Below the horizon. Rise: 17:35 | Tran: 22:44 | Set: 3:57

Alt: -7.36° Az: 96.19° Direction: East

7 Aquarii is a variable and multiple giant star of spectral class K5 in the constellation of Aquarius.

7 Aquarii visual magnitude is 5.51. Because of its faintness, 7 Aquarii is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

DSS2 image of 7 Aquarii. The red arrow shows the motion of 7 Aquarii during the next 10000 years (-0.50 arcmin in Right Ascension and -1.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 20h 58m 13s

Declination -09° 36’ 04”

Hour Angle 18h 00m 53s

Sideral Time 14h 59m 07s

J2000

Right Ascension 20h 56m 53s

Declination -09° 41’ 50”

Galactic Coordinates

Galactic Longitude 38.63°

Galactic Latitude -32.24°

Finder Chart

Simplified finder chart for 7 Aquarii.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.51

Class Giant

Absolute magnitude -0.82

Spectral Type K5

Color Index (B-V) 1.47

Temperature 3839K

The red dot in the diagram below shows where 7 Aquarii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 7 Aquarii. Attribution: Richard Powell / CC BY-SA

Star System Properties

7 Aquarii is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 7 Aquarii double sysyem:

Main star magnitude 5.51

Secondary star magnitude 9.01

Magnitude difference 3.5

Separation 176.6 arcsec

Distance, Radial Speed, Proper Motion

7 Aquarii is distant 601.48 light years from the Sun and it is moving towards the Sun at the speed of 33 kilometers per second.

Distance (parsec) 184.50

Distance (light year) 601.48

Radial Speed -33 km/s

Proper Motion RA -0.003 arcsec/y

Proper Motion Dec -0.01"/y

Alternative Designations

Flamsteed designation 7 Aquarii

Henry Draper Catalogue HD199345

SAO Catalogue SAO144968

Hipparcos Catalogue HIP103401

Durchmusterung Catalogue BD-10 5553

General Catalogue of Variable Stars 13419

Aitken Double Star Catalogue ADS14449

Visibility from Your Location

Today's 7 Aquarii rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 99.6° RISE 17:35

Max altitude: 28.9° TRANSIT 22:44

Azimuth: 260.4° SET 3:57

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

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Location

Other stars in Aquarius