| The bibliographical entries for Individual Stars and Collections
of Data are categorized according to the following coding scheme: 
 
Observational data
 
| a. | Photometry |  | b. | Spectroscopy |  | c. | Spectrophotometry |  | d. | Polarimetry |  | e. | Astrometry, interferometry |  | f. | Times of minima |  | g. |  -ray data |  | i. | Infrared data |  | o. | Optical data |  | p. | Photographic data |  | r. | Radio data |  | u. | Ultraviolet data |  | v. | Visual estimates |  | x. | X-ray data |  
Derived physical data
 
| a. | Orbital elements |  | b. | Absolute dimensions, masses |  | c. | New or improved ephemeris, period variations |  | d. | Apsidal motion |  | e. | Physical properties of stellar atmospheres |  | f. | Chemical abundances |  | g. | Accretion disks and accretion phenomena |  
Catalogues, discoveries, charts
 
| a. | Catalogues |  | b. | Discoveries of new binaries and novae |  | c. | Identification of optical counterparts of X-ray, IR, or
                   radio sources |  | d. | Finding charts |  
Observational techniques
Theoretical investigations
Statistical investigations
Miscellaneous
 
| a. | Abstract |  | b. | Addenda or errata |  
Abbreviations
 
| AD | accretion disk | HMXB | high-mass x-ray binary | QPO | quasi-periodic oscillation |  | BH | black hole | IP | intermediate polar | RV | radial velocity |  | CB | close binary | LC | light curve | SB | spectroscopic binary |  | CV | cataclysmic variable | LMXB | low-mass x-ray binary | WD | white dwarf |  | EB | eclipsing binary | NS | neutron star | WR | Wolf-Rayet star |  
 
 
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