HR2704

Below the horizon. Rise: 17:48 | Tran: 21:22 | Set: 0:59

Alt: -7.50° Az: 121.74° Direction: East-South-East

HR2704 is a variable and double sub-giant star of spectral class B2 in the constellation of Canis Major.

HR2704 visual magnitude is 5.69. Because of its faintness, HR2704 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 HR2704. The red arrow shows the motion of HR2704 during the next 10000 years (-2.00 arcmin in Right Ascension and 1.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 07h 10m 45s

Declination -25° 16’ 23”

Hour Angle 19h 24m 44s

Sidereal Time 02h 35m 29s

J2000

Right Ascension 07h 09m 42s

Declination -25° 13’ 51”

Galactic Coordinates

Galactic Longitude 237.5°

Galactic Latitude -7.48°

Finder Chart

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Finder chart for HR2704.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.69

Class Sub-giant

Absolute magnitude -3.06

Spectral Type B2IV

Color Index (B-V) -0.16

Temperature 12692K

The red dot in the diagram below shows where HR2704 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2704. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR2704 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR2704 double sysyem:

Main star magnitude 5.69

Secondary star magnitude 12.59

Magnitude difference 6.9

Separation 9.2 arcsec

Distance, Radial Speed, Proper Motion

HR2704 is distant 1,831.46 light years from the Sun and it is moving far from the Sun at the speed of 27 kilometers per second.

Distance (parsec) 561.80

Distance (light year) 1,831.46

Radial Speed 27 km/s

Proper Motion RA -0.012 arcsec/y

Proper Motion Dec 0.006"/y

Alternative Designations

Henry Draper Catalogue HD54912

SAO Catalogue SAO173101

Hipparcos Catalogue HIP34579

Durchmusterung Catalogue CD-25 4120

General Catalogue of Variable Stars Var?

Visibility from Your Location

Today's HR2704 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 115.3° RISE 17:48

Max altitude: 13.2° TRANSIT 21:22

Azimuth: 244.7° SET 0:59

Set Location

Other stars in Canis Major