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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:18 
Transit: 12:14 
Sunset: 17:11
wb_twilight   (Nautical Twilight)  
What's Visible Now • Tonight Timeline
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All Constellations » Orion » 

HR1691

Below the horizon.  Rise: 13:33 | Tran: 19:36 | Set: 1:43
Alt: -35.15°   Az: 337.11°   Direction: North-North-West

HR1691 is a double giant star of spectral class G5 in the constellation of Orion.

HR1691 visual magnitude is 5.89. Because of its faintness, HR1691 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.

Image of HR1691 star
DSS2 image of HR1691. The red arrow shows the motion of HR1691 during the next 10000 years (-2.00 arcmin in Right Ascension and -2.50 arcmin in declination);

Celestial Coordinates

Apparent

05h 13m 03s
+01° 03’ 56”
10h 45m 48s
15h 58m 52s

J2000

05h 11m 45s
+01° 02’ 12”

Galactic Coordinates

200°
-21.51°

Finder Chart

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Finder chart for HR1691.

Magnitude, Color, Spectral Class

5.89
Giant

-1.35
G5III
5742K

The red dot in the diagram below shows where HR1691 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1691. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR1691 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR1691 double sysyem:

5.89
7.29
1.4
1.6 arcsec

Distance, Radial Speed, Proper Motion

HR1691 is distant 915.73 light years from the Sun and it is moving towards the Sun at the speed of 19 kilometers per second.

280.90
915.73
-19 km/s
-0.012 arcsec/y
-0.015"/y

Alternative Designations

SAO112509
SAO112509

Visibility from Your Location

Today's HR1691 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 88.9°
Max altitude: 39.6°
Azimuth: 271.1°