HR3921

Below the horizon. Rise: 7:31 | Tran: 11:24 | Set: 15:16

Alt: -58.51° Az: 330.35° Direction: North-North-West

HR3921 is a star of spectral class A2 in the constellation of Hydra.

HR3921 visual magnitude is 6.24. Because of its faintness, HR3921 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 HR3921. The red arrow shows the motion of HR3921 during the next 10000 years (-6.33 arcmin in Right Ascension and -5.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 09h 55m 40s

Declination -22° 36’ 21”

Hour Angle 10h 54m 57s

Sideral Time 20h 50m 38s

J2000

Right Ascension 09h 54m 31s

Declination -22° 29’ 17”

Galactic Coordinates

Galactic Longitude 257.84°

Galactic Latitude 24.51°

Finder Chart

Simplified finder chart for HR3921.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.24

Class

Absolute magnitude 0.51

Spectral Type A2

Color Index (B-V) 0.04

Temperature 9652K

The red dot in the diagram below shows where HR3921 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3921. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR3921 is distant 457.22 light years from the Sun and it is moving far from the Sun at the speed of 9 kilometers per second.

Distance (parsec) 140.25

Distance (light year) 457.22

Radial Speed 9 km/s

Proper Motion RA -0.038 arcsec/y

Proper Motion Dec -0.031"/y

Alternative Designations

Henry Draper Catalogue HD85905

SAO Catalogue SAO178164

Hipparcos Catalogue HIP48584

Durchmusterung Catalogue BD-21 2935

Visibility from Your Location

Today's HR3921 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 112.6° RISE 7:31

Max altitude: 15.9° TRANSIT 11:24

Azimuth: 247.4° SET 15:16

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

Location

Other stars in Hydra