77 Aquarii

Above the horizon. Rise: 19:17 | Tran: 23:50 | Set: 4:28

Alt: 8.91° Az: 229.54° Direction: South-West

77 Aquarii is a variable giant star of spectral class K2 in the constellation of Aquarius.

77 Aquarii visual magnitude is 5.56. Because of its faintness, 77 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 77 Aquarii. The red arrow shows the motion of 77 Aquarii during the next 1000 years (-3.70 arcmin in Right Ascension and -1.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 22h 56m 04s

Declination -16° 08’ 23”

Hour Angle 03h 25m 58s

Sideral Time 02h 22m 03s

J2000

Right Ascension 22h 54m 45s

Declination -16° 16’ 18”

Galactic Coordinates

Galactic Longitude 48.79°

Galactic Latitude -60.9°

Finder Chart

Simplified finder chart for 77 Aquarii.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.56

Class Giant

Absolute magnitude 2.39

Spectral Type K2III

Color Index (B-V) 1.14

Temperature 4430K

The red dot in the diagram below shows where 77 Aquarii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 77 Aquarii. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

77 Aquarii is distant 140.09 light years from the Sun and it is moving towards the Sun at the speed of 36 kilometers per second.

Distance (parsec) 42.97

Distance (light year) 140.09

Radial Speed -36 km/s

Proper Motion RA -0.222 arcsec/y

Proper Motion Dec -0.09"/y

Alternative Designations

Flamsteed designation 77 Aquarii

Henry Draper Catalogue HD216640

SAO Catalogue SAO165376

Hipparcos Catalogue HIP113148

Durchmusterung Catalogue BD-17 6619

General Catalogue of Variable Stars 14358

Visibility from Your Location

Today's 77 Aquarii rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 106.1° RISE 19:17

Max altitude: 22.4° TRANSIT 23:50

Azimuth: 253.9° SET 4:28

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

Location

Other stars in Aquarius