HR3977

Below the horizon. Rise: 6:46 | Tran: 11:13 | Set: 15:39

Alt: -16.34° Az: 97.37° Direction: East

HR3977 is a giant star of spectral class K7 in the constellation of Hydra.

HR3977 visual magnitude is 5.6. Because of its faintness, HR3977 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 HR3977. The red arrow shows the motion of HR3977 during the next 10000 years (2.67 arcmin in Right Ascension and -10.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 10h 08m 20s

Declination -17° 15’ 47”

Hour Angle 17h 41m 02s

Sideral Time 03h 49m 23s

J2000

Right Ascension 10h 07m 09s

Declination -17° 08’ 30”

Galactic Coordinates

Galactic Longitude 256.19°

Galactic Latitude 30.45°

Finder Chart

Simplified finder chart for HR3977.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.6

Class Giant

Absolute magnitude 0.49

Spectral Type K7III

Color Index (B-V) 1.5

Temperature 3794K

The red dot in the diagram below shows where HR3977 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3977. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR3977 is distant 343.16 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

Distance (parsec) 105.26

Distance (light year) 343.16

Radial Speed 11 km/s

Proper Motion RA 0.016 arcsec/y

Proper Motion Dec -0.063"/y

Alternative Designations

Henry Draper Catalogue HD87808

SAO Catalogue SAO155739

Hipparcos Catalogue HIP49569

Durchmusterung Catalogue BD-16 2974

FK5 Catalogue 2813

Visibility from Your Location

Today's HR3977 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 107.3° RISE 6:46

Max altitude: 21.3° TRANSIT 11:13

Azimuth: 252.7° SET 15:39

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

Location

Other stars in Hydra