Identification Data |
Common Name | |
Constellation | Saggitarius |
Star Name | eta Sgr |
Skymap Number | 18060246 |
Henry Draper (HD) Number | 167618 |
Harvard Revised (HR) Number | 6832 |
SAO Number | 209957 |
Durchmusterung (DM) Number | CD-3612423 |
Washington Double Stars (WDS) Number
| 18176-3646
|
Positional Data |
Position and Proper Motion (PPM) Number | 297508 |
Right Ascension (RA) J2000 | 18h 17m 37.635s |
Declination (Dec) J2000 | -36° 45' 42.070" |
Position Uncertainty | 0.0106s |
Proper Motion in RA (J2000)/cos(Dec) | -0.01076 |
Proper Motion in Dec (J2000) | -0.166666 |
Radial Velocity | +000.5km s-1 |
Trigonometric Parallax | +0.02187s |
Trigonometric Parallax Uncertainty | 0.00092s |
GCI Unit Vector in X (J2000) | 0.061557 |
GCI Unit Vector in Y (J2000) | -0.798763 |
GCI Unit Vector in Z (J2000) | -0.598488 |
Galactic Longitude | 356.44° |
Galactic Latitude
| -9.68°
|
Observational Data |
Observed Visual Magnitude (V) | 3.13 |
Derived Visual Magnitude | |
Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.004 |
Observed B Magnitude | 4.66 |
Observed B-V Colour | +1.528 |
Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.005 |
Observed U Magnitude | |
Observed U-B Colour | |
Observed U Magnitude or (U-B) Magnitude Uncertainty | |
Observed Photovisual Magnitude | 3.2 |
Observed Photographic Magnitude | |
Morgan Keenan (MK) Spectral Type | M3.5III |
One-Dimensional Spectral Class | M3 |
Position Angle | 105 |
Year of Observation | 1977. AD |