Identification Data |
Common Name | |
Constellation | Cancer |
Star Name | 21 Cnc |
Skymap Number | 8230213 |
Henry Draper (HD) Number | 70734 |
Harvard Revised (HR) Number | 3290 |
SAO Number | 97788 |
Durchmusterung (DM) Number | BD+11 1830 |
Washington Double Stars (WDS) Number
| 08239+1038
|
Positional Data |
Position and Proper Motion (PPM) Number | 125216 |
Right Ascension (RA) J2000 | 8h 23m 55.210s |
Declination (Dec) J2000 | +10° 37' 55.425" |
Position Uncertainty | 0.0179s |
Proper Motion in RA (J2000)/cos(Dec) | +0.00025 |
Proper Motion in Dec (J2000) | -0.022167 |
Radial Velocity | +003.3km s-1 |
Trigonometric Parallax | +0.00293s |
Trigonometric Parallax Uncertainty | 0.00134s |
GCI Unit Vector in X (J2000) | -0.577417 |
GCI Unit Vector in Y (J2000) | 0.795329 |
GCI Unit Vector in Z (J2000) | 0.184501 |
Galactic Longitude | 213.68° |
Galactic Latitude
| 25.32°
|
Observational Data |
Observed Visual Magnitude (V) | 6.13 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.006 |
Observed B Magnitude | 7.63 |
Observed B-V Colour | +1.499 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.014 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 6.3 |
Observed Photographic Magnitude | 7.6 |
Morgan Keenan (MK) Spectral Type | M2III |
One-Dimensional Spectral Class | K5 |
Position Angle | 260 |
Year of Observation | 1984. AD |