| Identification Data |
| Common Name | Unukalhai |
| Constellation | Serpens |
| Star Name | 24alp Ser |
| Skymap Number | 15440059 |
| Henry Draper (HD) Number | 140573 |
| Harvard Revised (HR) Number | 5854 |
| SAO Number | 121157 |
| Durchmusterung (DM) Number | BD+06 3088 |
Washington Double Stars (WDS) Number
| 15443+0626
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 161854 |
| Right Ascension (RA) J2000 | 15h 44m 16.074s |
| Declination (Dec) J2000 | +6° 25' 32.257" |
| Position Uncertainty | 0.0088s |
| Proper Motion in RA (J2000)/cos(Dec) | +0.00903 |
| Proper Motion in Dec (J2000) | +0.044166 |
| Radial Velocity | +002.8km s-1 |
| Trigonometric Parallax | +0.04454s |
| Trigonometric Parallax Uncertainty | 0.00071s |
| GCI Unit Vector in X (J2000) | -0.554717 |
| GCI Unit Vector in Y (J2000) | -0.824479 |
| GCI Unit Vector in Z (J2000) | 0.111913 |
| Galactic Longitude | 14.20° |
Galactic Latitude
| 44.08°
|
| Observational Data |
| Observed Visual Magnitude (V) | 2.63 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.003 |
| Observed B Magnitude | 3.81 |
| Observed B-V Colour | +1.183 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.003 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 2.8 |
| Observed Photographic Magnitude | |
| Morgan Keenan (MK) Spectral Type | K2IIIbCN1 |
| One-Dimensional Spectral Class | K0 |
| Position Angle | 350 |
| Year of Observation | 1911. AD |
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