| Identification Data |
| Common Name | |
| Constellation | Corona Borealis |
| Star Name | 4the CrB |
| Skymap Number | 15320149 |
| Henry Draper (HD) Number | 138749 |
| Harvard Revised (HR) Number | 5778 |
| SAO Number | 64769 |
| Durchmusterung (DM) Number | BD+31 2750 |
Washington Double Stars (WDS) Number
| 15329+3122
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 78669 |
| Right Ascension (RA) J2000 | 15h 32m 55.782s |
| Declination (Dec) J2000 | +31° 21' 32.880" |
| Position Uncertainty | 0.0068s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00153 |
| Proper Motion in Dec (J2000) | -0.008967 |
| Radial Velocity | -025.0km s-1 |
| Trigonometric Parallax | +0.01049s |
| Trigonometric Parallax Uncertainty | 0.00066s |
| GCI Unit Vector in X (J2000) | -0.511132 |
| GCI Unit Vector in Y (J2000) | -0.684052 |
| GCI Unit Vector in Z (J2000) | 0.520401 |
| Galactic Longitude | 49.68° |
Galactic Latitude
| 54.71°
|
| Observational Data |
| Observed Visual Magnitude (V) | 4.16 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
| Observed B Magnitude | 4.04 |
| Observed B-V Colour | -0.122 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.002 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 4.2 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | B6Vnne |
| One-Dimensional Spectral Class | B5 |
| Position Angle | 201 |
| Year of Observation | 1992. AD |
Printer Version