HR6490

Below the horizon. Rise: 15:15 | Tran: 18:43 | Set: 22:11

Alt: -54.78° Az: 304.11° Direction: North-West

HR6490 is a hypergiant star of spectral class A0 in the constellation of Ophiuchus.

HR6490 visual magnitude is 6.44. Because of its faintness, HR6490 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 HR6490. The red arrow shows the motion of HR6490 during the next 10000 years (-4.67 arcmin in Right Ascension and -4.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 17h 28m 27s

Declination -25° 57’ 45”

Hour Angle 09h 51m 42s

Sideral Time 03h 20m 09s

J2000

Right Ascension 17h 26m 55s

Declination -25° 56’ 35”

Galactic Coordinates

Galactic Longitude 0.3°

Galactic Latitude 5.11°

Finder Chart

Simplified finder chart for HR6490.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.44

Class Hypergiant

Absolute magnitude 0.88

Spectral Type A0V

Color Index (B-V) -0.06

Temperature 10941K

The red dot in the diagram below shows where HR6490 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6490. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR6490 is distant 422.83 light years from the Sun and it is moving towards the Sun at the speed of 8 kilometers per second.

Distance (parsec) 129.70

Distance (light year) 422.83

Radial Speed -8 km/s

Proper Motion RA -0.028 arcsec/y

Proper Motion Dec -0.026"/y

Alternative Designations

Henry Draper Catalogue HD157864

SAO Catalogue SAO185406

Hipparcos Catalogue HIP85391

Durchmusterung Catalogue CD-2512160

Visibility from Your Location

Today's HR6490 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 116.0° RISE 15:15

Max altitude: 12.6° TRANSIT 18:43

Azimuth: 244.0° SET 22:11

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

Location

Other stars in Ophiuchus