Identification Data |
Common Name | |
Constellation | Cepheus |
Star Name | 3eta Cep |
Skymap Number | 20450069 |
Henry Draper (HD) Number | 198149 |
Harvard Revised (HR) Number | 7957 |
SAO Number | 19019 |
Durchmusterung (DM) Number | BD+61 2050 |
Washington Double Stars (WDS) Number
| 20453+6150
|
Positional Data |
Position and Proper Motion (PPM) Number | 22372 |
Right Ascension (RA) J2000 | 20h 45m 17.375s |
Declination (Dec) J2000 | +61° 50' 19.615" |
Position Uncertainty | 0.0052s |
Proper Motion in RA (J2000)/cos(Dec) | +0.01216 |
Proper Motion in Dec (J2000) | +0.818066 |
Radial Velocity | -087.3km s-1 |
Trigonometric Parallax | +0.06973s |
Trigonometric Parallax Uncertainty | 0.00049s |
GCI Unit Vector in X (J2000) | 0.311629 |
GCI Unit Vector in Y (J2000) | -0.354440 |
GCI Unit Vector in Z (J2000) | 0.881623 |
Galactic Longitude | 97.86° |
Galactic Latitude
| 11.64°
|
Observational Data |
Observed Visual Magnitude (V) | 3.42 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.002 |
Observed B Magnitude | 4.34 |
Observed B-V Colour | +0.917 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.003 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 3.6 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | K0IV |
One-Dimensional Spectral Class | K0 |
Position Angle | 66 |
Year of Observation | 1957. AD |