| Identification Data |
| Common Name | Marfic |
| Constellation | Ophiuchus |
| Star Name | 10lam Oph |
| Skymap Number | 16300130 |
| Henry Draper (HD) Number | 148857 |
| Harvard Revised (HR) Number | 6149 |
| SAO Number | 121658 |
| Durchmusterung (DM) Number | BD+02 3118 |
Washington Double Stars (WDS) Number
| 16309+0159
|
| Positional Data |
| Position and Proper Motion (PPM) Number | 400217 |
| Right Ascension (RA) J2000 | 16h 30m 54.822s |
| Declination (Dec) J2000 | +1° 59' 2.123" |
| Position Uncertainty | 0.0173s |
| Proper Motion in RA (J2000)/cos(Dec) | -0.00209 |
| Proper Motion in Dec (J2000) | -0.073067 |
| Radial Velocity | -016.0km s-1 |
| Trigonometric Parallax | +0.01963s |
| Trigonometric Parallax Uncertainty | 0.00134s |
| GCI Unit Vector in X (J2000) | -0.378770 |
| GCI Unit Vector in Y (J2000) | -0.924843 |
| GCI Unit Vector in Z (J2000) | 0.034619 |
| Galactic Longitude | 17.13° |
Galactic Latitude
| 31.85°
|
| Observational Data |
| Observed Visual Magnitude (V) | 3.90 |
| Derived Visual Magnitude | |
| Derived Visual Magnitude or Observed Visual Magnitude Uncertainty | 0.019 |
| Observed B Magnitude | 3.95 |
| Observed B-V Colour | +0.048 |
| Observed B Magnitude or (B-V) Magnitude Uncertainty | 0.025 |
| Observed U Magnitude | |
| Observed U-B Colour | |
| Observed U Magnitude or (U-B) Magnitude Uncertainty | |
| Observed Photovisual Magnitude | 3.9 |
| Observed Photographic Magnitude | 3.9 |
| Morgan Keenan (MK) Spectral Type | A0V+A4V |
| One-Dimensional Spectral Class | A0 |
| Position Angle | |
| Year of Observation | 1992. AD |
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