Identification Data |
Common Name | Peacock |
Constellation | Pavo |
Star Name | alp Pav |
Skymap Number | 20250162 |
Henry Draper (HD) Number | 193924 |
Harvard Revised (HR) Number | 7790 |
SAO Number | 246574 |
Durchmusterung (DM) Number | CP-57 9674 |
Washington Double Stars (WDS) Number
| 20256-5644
|
Positional Data |
Position and Proper Motion (PPM) Number | 348537 |
Right Ascension (RA) J2000 | 20h 25m 38.857s |
Declination (Dec) J2000 | -56° 44' 6.324" |
Position Uncertainty | 0.0065s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00094 |
Proper Motion in Dec (J2000) | -0.086266 |
Radial Velocity | +002.0km s-1 |
Trigonometric Parallax | +0.01780s |
Trigonometric Parallax Uncertainty | 0.00070s |
GCI Unit Vector in X (J2000) | 0.325588 |
GCI Unit Vector in Y (J2000) | -0.441425 |
GCI Unit Vector in Z (J2000) | -0.836143 |
Galactic Longitude | 340.91° |
Galactic Latitude
| -35.19°
|
Observational Data |
Observed Visual Magnitude (V) | 1.92 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.006 |
Observed B Magnitude | 1.80 |
Observed B-V Colour | -0.120 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.008 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 2.1 |
Observed Photographic Magnitude | 2.0 |
Morgan Keenan (MK) Spectral Type | B2IV |
One-Dimensional Spectral Class | B3 |
Position Angle | 84 |
Year of Observation | 1879. AD |