ρ Ophiuchi (rho Ophiuchi)

Above the horizon. Rise: 14:00 | Tran: 17:46 | Set: 21:32

Alt: 14.96° Az: 176.74° Direction: South

ρ Ophiuchi is a multiple main-sequence star of spectral class B2 in the constellation of Ophiuchus.

ρ Ophiuchi visual magnitude is 5.92. Because of its faintness, ρ Ophiuchi 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 ρ Ophiuchi. The red arrow shows the motion of ρ Ophiuchi during the next 10000 years (-1.17 arcmin in Right Ascension and -2.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 27m 04s

Declination -23° 30’ 02”

Hour Angle 23h 46m 16s

Sideral Time 16h 13m 20s

J2000

Right Ascension 16h 25m 35s

Declination -23° 26’ 45”

Galactic Coordinates

Galactic Longitude 353.69°

Galactic Latitude 17.69°

Finder Chart

Simplified finder chart for ρ Ophiuchi (rho Ophiuchi).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.92

Class Main-sequence

Spectral Type B2V

Color Index (B-V)

Temperature 10125K

Star System Properties

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

Main star magnitude 5.92

Secondary star magnitude 6.62

Magnitude difference 0.7

Separation 3.2 arcsec

Alternative Designations

Bayer designation ρ Ophiuchi
(rho Ophiuchi)

Flamsteed designation 5 Ophiuchi

Henry Draper Catalogue HD147934

SAO Catalogue SAO184381

Durchmusterung Catalogue CD-2312861

Aitken Double Star Catalogue ADS10049

Visibility from Your Location

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

Azimuth: 113.5° RISE 14:00

Max altitude: 15.0° TRANSIT 17:46

Azimuth: 246.5° SET 21:32

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

Location

Other stars in Ophiuchus