Home
Search Objects
Major Solar System Objects
Comets
Asteroids
Spacecrafts
Star Maps
Orbits
public  South Grafton, Australia South Grafton, Australia  ⓘ
TimezoneAustralia/Sydney
Sunrise: 6:45 
Transit: 11:52 
Sunset: 16:59
Search  close
All Constellations » Cygnus » 

HR7798

Above the horizon.  Rise: 21:52 | Tran: 1:27 | Set: 5:02
Alt: 6.74°   Az: 334.12°   Direction: North-North-West

HR7798 is a variable hypergiant star of spectral class K0 in the constellation of Cygnus.

HR7798 visual magnitude is 5.58. Because of its faintness, HR7798 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.

Image of HR7798 star
DSS2 image of HR7798. The red arrow shows the motion of HR7798 during the next 10000 years (4.67 arcmin in Right Ascension and 7.33 arcmin in declination);

Celestial Coordinates

Apparent

20h 22m 55s
+45° 52’ 39”
02h 34m 03s
22h 56m 58s

J2000

20h 22m 05s
+45° 47’ 42”

Galactic Coordinates

82.7°
5.04°

Finder Chart

loader
  Loading map...
Finder chart for HR7798.

Magnitude, Color, Spectral Class

5.58
Hypergiant

0.06
K0III
4559K

The red dot in the diagram below shows where HR7798 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7798. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR7798 is distant 414.76 light years from the Sun and it is moving towards the Sun at the speed of 22 kilometers per second.

127.23
414.76
-22 km/s
0.028 arcsec/y
0.044"/y

Alternative Designations

SAO49531
SAO49531

Visibility from Your Location

Today's HR7798 rise, transit and set times from South Grafton, Australia are the following (all times relative to the local timezone Australia/Sydney):

Azimuth: 44.1°
Max altitude: 14.4°
Azimuth: 315.9°