HR1690

Below the horizon. Rise: 7:35 | Tran: 13:35 | Set: 19:36

Alt: -36.91° Az: 15.71° Direction: North-North-East

HR1690 is a variable and double main-sequence star of spectral class B9 in the constellation of Orion.

HR1690 visual magnitude is 6.67. Because of its faintness, HR1690 is not visible to the naked eye.

DSS2 image of HR1690. The red arrow shows the motion of HR1690 during the next 10000 years (2.50 arcmin in Right Ascension and 0.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 05h 12m 59s

Declination +00° 32’ 38”

Hour Angle 12h 50m 01s

Sidereal Time 18h 03m 01s

J2000

Right Ascension 05h 11m 41s

Declination +00° 30’ 52”

Galactic Coordinates

Galactic Longitude 200.48°

Galactic Latitude -21.79°

Finder Chart

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Finder chart for HR1690.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 6.67

Class Main-sequence

Absolute magnitude -1.79

Spectral Type B9V

Color Index (B-V) -0.07

Temperature 11092K

The red dot in the diagram below shows where HR1690 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR1690. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR1690 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 HR1690 double sysyem:

Main star magnitude 6.67

Secondary star magnitude 7.07

Magnitude difference 0.4

Separation 0.1 arcsec

Distance, Radial Speed, Proper Motion

HR1690 is distant 1,605.91 light years from the Sun and it is moving far from the Sun at the speed of 20 kilometers per second.

Distance (parsec) 492.61

Distance (light year) 1,605.91

Radial Speed 20 km/s

Proper Motion RA 0.015 arcsec/y

Proper Motion Dec 0.003"/y

Alternative Designations

Henry Draper Catalogue HD33647

SAO Catalogue SAO112505

Hipparcos Catalogue HIP24196

Durchmusterung Catalogue BD+00 974

General Catalogue of Variable Stars V1085 Ori

Aitken Double Star Catalogue ADS3767

Visibility from Your Location

Today's HR1690 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 89.5° RISE 7:35

Max altitude: 39.1° TRANSIT 13:35

Azimuth: 270.5° SET 19:36

Set Location

Other stars in Orion