Identification Data |
Common Name | |
Constellation | Corona Borealis |
Star Name | 2eta CrB |
Skymap Number | 15230032 |
Henry Draper (HD) Number | 137107 |
Harvard Revised (HR) Number | 5727 |
SAO Number | 64673 |
Durchmusterung (DM) Number | BD+30 2653 |
Washington Double Stars (WDS) Number
| 15232+3017
|
Positional Data |
Position and Proper Motion (PPM) Number | 78550 |
Right Ascension (RA) J2000 | 15h 23m 12.311s |
Declination (Dec) J2000 | +30° 17' 16.124" |
Position Uncertainty | 0.0090s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00971 |
Proper Motion in Dec (J2000) | -0.176567 |
Radial Velocity | -006.8km s-1 |
Trigonometric Parallax | +0.05370s |
Trigonometric Parallax Uncertainty | 0.00124s |
GCI Unit Vector in X (J2000) | -0.545744 |
GCI Unit Vector in Y (J2000) | -0.669179 |
GCI Unit Vector in Z (J2000) | 0.504344 |
Galactic Longitude | 47.54° |
Galactic Latitude
| 56.73°
|
Observational Data |
Observed Visual Magnitude (V) | |
Derived Visual Magnitude | 5.72 |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.400 |
Observed B Magnitude | |
Observed B-V Colour | |
Observed B Magnitude or (B-V) Magnitude Uncertainty | |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 5.6 |
Observed Photographic Magnitude | 6.1 |
Morgan Keenan (MK) Spectral Type | G0V |
One-Dimensional Spectral Class | G0 |
Position Angle | |
Year of Observation | 1993. AD |