| Identification Data |
| Common Name | |
| Constellation | Serpens |
| Star Name | 9tau1Ser |
| Skymap Number | 15250135 |
| Henry Draper (HD) Number | 137471 |
| Harvard Revised (HR) Number | 5739 |
| SAO Number | 101545 |
| Durchmusterung (DM) Number | BD+15 2858 |
Washington Double Stars (WDS) Number
|
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 131392 |
| Right Ascension (RA) J2000 | 15h 25m 47.396s |
| Declination (Dec) J2000 | +15° 25' 40.930" |
| Position Uncertainty | 0.0079s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00097 |
| Proper Motion in Dec (J2000) | -0.007566 |
| Radial Velocity | -019.8km s-1 |
| Trigonometric Parallax | +0.00355s |
| Trigonometric Parallax Uncertainty | 0.00076s |
| GCI Unit Vector in X (J2000) | -0.600774 |
| GCI Unit Vector in Y (J2000) | -0.753857 |
| GCI Unit Vector in Z (J2000) | 0.266028 |
| Galactic Longitude | 22.86° |
Galactic Latitude
| 52.36°
|
| Observational Data |
| Observed Visual Magnitude (V) | 5.15 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 6.77 |
| Observed B-V Colour | +1.623 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.006 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 5.5 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | M1III |
| One-Dimensional Spectral Class | M0 |
| Position Angle | |
| Year of Observation | AD |
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