HR6987

Above the horizon. Rise: 21:06 | Tran: 3:41 | Set: 10:13

Alt: 9.76° Az: 91.50° Direction: East

HR6987 is a multiple main-sequence star of spectral class F3 in the constellation of Ophiuchus.

HR6987 visual magnitude is 5.45. Because of its faintness, HR6987 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 HR6987. The red arrow shows the motion of HR6987 during the next 1000 years (-0.42 arcmin in Right Ascension and -2.35 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 37m 53s

Declination +06° 41’ 41”

Hour Angle 18h 29m 04s

Sidereal Time 13h 06m 57s

J2000

Right Ascension 18h 36m 39s

Declination +06° 40’ 18”

Galactic Coordinates

Galactic Longitude 37.22°

Galactic Latitude 6.31°

Finder Chart

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Finder chart for HR6987.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.45

Class Main-sequence

Absolute magnitude 2.94

Spectral Type F3V

Color Index (B-V) 0.37

Temperature 7044K

The red dot in the diagram below shows where HR6987 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR6987. Attribution: Richard Powell / CC BY-SA

Star System Properties

HR6987 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 HR6987 double sysyem:

Main star magnitude 5.45

Secondary star magnitude 12.15

Magnitude difference 6.7

Separation 74.8 arcsec

Distance, Radial Speed, Proper Motion

HR6987 is distant 103.39 light years from the Sun and it is moving towards the Sun at the speed of 21 kilometers per second.

Distance (parsec) 31.72

Distance (light year) 103.39

Radial Speed -21 km/s

Proper Motion RA -0.025 arcsec/y

Proper Motion Dec -0.141"/y

Alternative Designations

Henry Draper Catalogue HD171834

SAO Catalogue SAO123693

Hipparcos Catalogue HIP91237

Durchmusterung Catalogue BD+06 3855

Aitken Double Star Catalogue ADS11496

Visibility from Your Location

Today's HR6987 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 83.3° RISE 21:06

Max altitude: 45.2° TRANSIT 3:41

Azimuth: 276.7° SET 10:13

Set Location

Other stars in Ophiuchus