66 Ophiuchi

Above the horizon. Rise: 12:52 | Tran: 19:12 | Set: 1:36

Alt: 3.12° Az: 86.90° Direction: East

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

66 Ophiuchi visual magnitude is 4.64. Because of its moderate brightness, 66 Ophiuchi is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of 66 Ophiuchi. The red arrow shows the motion of 66 Ophiuchi during the next 10000 years (0.50 arcmin in Right Ascension and -2.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 01m 29s

Declination +04° 22’ 08”

Hour Angle 17h 58m 05s

Sideral Time 11h 59m 35s

J2000

Right Ascension 18h 00m 15s

Declination +04° 22’ 06”

Galactic Coordinates

Galactic Longitude 30.99°

Galactic Latitude 13.37°

Finder Chart

Simplified finder chart for 66 Ophiuchi.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.64

Class Main-sequence

Absolute magnitude -1.94

Spectral Type B2V

Color Index (B-V) -0.03

Temperature 10516K

The red dot in the diagram below shows where 66 Ophiuchi is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 66 Ophiuchi. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

66 Ophiuchi is distant 676.35 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 207.47

Distance (light year) 676.35

Radial Speed -13 km/s

Proper Motion RA 0.003 arcsec/y

Proper Motion Dec -0.013"/y

Alternative Designations

Flamsteed designation 66 Ophiuchi

Henry Draper Catalogue HD164284

SAO Catalogue SAO123005

Hipparcos Catalogue HIP88149

Durchmusterung Catalogue BD+04 3570

General Catalogue of Variable Stars V2048 Oph

Visibility from Your Location

Today's 66 Ophiuchi rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 85.6° RISE 12:52

Max altitude: 42.9° TRANSIT 19:12

Azimuth: 274.4° SET 1:36

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

Location

Other stars in Ophiuchus