| Detail | Value | Reference |
|---|---|---|
| WR | 138 | |
| Reference | VII | |
| HD | HD 193077 | |
| Alias1 | HIP 99982 | |
| Alias2 | He 3-1866 | |
| Alias3 | ||
| Right Ascension J2000 (h:m:s) | 20 17 00.02 | |
| Declination J2000 (d:m:s) | +37 25 23.7 | |
| Galactic Longitude (deg) | 75.2345 | |
| Galactic Latitude (deg) | 1.1066 | |
| Spectral Type | WN5o+B?; WN6o+O | SSM96; CW11 |
| Binary Status | SB2, VB (P=1521d) | |
| umag | 8.54 | Ma84 |
| bmag | 8.32 | Ma84 |
| vmag | 8.1 | Ma84 |
| rmag | 7.95 | Ma84 |
| Umag | 7.75 | Py66 |
| Bmag | 8.43 | HF00 |
| Vmag | 8.06 | HF00 |
| Gmag | 7.92 | DR2 |
| Jmag | 6.965 | CS03 |
| Hmag | 6.796 | CS03 |
| Kmag | 6.581 | CS03 |
| Cluster | ||
| Association | Cyg OB1 | |
| Star Forming Region | ||
| Distance | 2.166 | CRB23 |