Identification Data |
Common Name | Propus |
Constellation | Gemini |
Star Name | 7eta Gem |
Skymap Number | 6140209 |
Henry Draper (HD) Number | 42995 |
Harvard Revised (HR) Number | 2216 |
SAO Number | 78135 |
Durchmusterung (DM) Number | BD+22 1241 |
Washington Double Stars (WDS) Number
| 06149+2230
|
Positional Data |
Position and Proper Motion (PPM) Number | 95649 |
Right Ascension (RA) J2000 | 6h 14m 52.657s |
Declination (Dec) J2000 | +22° 30' 24.476" |
Position Uncertainty | 0.0257s |
Proper Motion in RA (J2000)/cos(Dec) | -0.00451 |
Proper Motion in Dec (J2000) | -0.010267 |
Radial Velocity | +019.0km s-1 |
Trigonometric Parallax | +0.00934s |
Trigonometric Parallax Uncertainty | 0.00199s |
GCI Unit Vector in X (J2000) | -0.059929 |
GCI Unit Vector in Y (J2000) | 0.921888 |
GCI Unit Vector in Z (J2000) | 0.382793 |
Galactic Longitude | 188.86° |
Galactic Latitude
| 2.52°
|
Observational Data |
Observed Visual Magnitude (V) | 3.30 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.008 |
Observed B Magnitude | 4.86 |
Observed B-V Colour | +1.560 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.012 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | |
Observed Photographic Magnitude | 4.5 |
Morgan Keenan (MK) Spectral Type | M2.5III |
One-Dimensional Spectral Class | M0 |
Position Angle | 258 |
Year of Observation | 1990. AD |