104 Aquarii

Below the horizon. Rise: 20:25 | Tran: 0:49 | Set: 5:17

Alt: -42.48° Az: 299.29° Direction: West-North-West

104 Aquarii is a variable and multiple hypergiant star of spectral class G0 in the constellation of Aquarius.

104 Aquarii visual magnitude is 4.82. Because of its moderate brightness, 104 Aquarii is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of 104 Aquarii. The red arrow shows the motion of 104 Aquarii during the next 10000 years (2.50 arcmin in Right Ascension and 0.67 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 23h 43m 02s

Declination -17° 40’ 45”

Hour Angle 09h 10m 08s

Sideral Time 08h 53m 11s

J2000

Right Ascension 23h 41m 45s

Declination -17° 48’ 59”

Galactic Coordinates

Galactic Longitude 59.4°

Galactic Latitude -71.44°

Finder Chart

Simplified finder chart for 104 Aquarii.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.82

Class Hypergiant

Absolute magnitude -1.65

Spectral Type G0I

Color Index (B-V) 0.82

Temperature 5221K

The red dot in the diagram below shows where 104 Aquarii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 104 Aquarii. Attribution: Richard Powell / CC BY-SA

Star System Properties

104 Aquarii is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the 104 Aquarii double sysyem:

Main star magnitude 4.82

Secondary star magnitude 7.62

Magnitude difference 2.8

Separation 120.1 arcsec

Distance, Radial Speed, Proper Motion

104 Aquarii is distant 643.00 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

Distance (parsec) 197.24

Distance (light year) 643.00

Radial Speed 3 km/s

Proper Motion RA 0.015 arcsec/y

Proper Motion Dec 0.004"/y

Alternative Designations

Flamsteed designation 104 Aquarii

Henry Draper Catalogue HD222574

SAO Catalogue SAO165836

Hipparcos Catalogue HIP116901

Durchmusterung Catalogue BD-18 6358

General Catalogue of Variable Stars 14671

Visibility from Your Location

Today's 104 Aquarii rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 107.7° RISE 20:25

Max altitude: 20.8° TRANSIT 0:49

Azimuth: 252.3° SET 5:17

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

Location

Other stars in Aquarius