Dictionary of Nomenclature of Celestial Objects

urces around TW Hya.
Table 3: N=49 X-ray sources around CoD -29 8887.
Table 4: Optical counterparts of the X-ray sources: a letter 'A' is added at the end of the format when there are several possibilities of optical counterpart for the same X-ray source. (The authors used this rule only for one source, but it is used systematically in SIMBAD)
Ref:=1998A&A...336..242H
byHOFF W. , HENNING T., PFAU W.
 Astron. Astrophys., 336, 242-250 (1998)
  The nature of isolated T Tauri stars.
oTable 2: <[HHP98] TW Hya XNN> (Nos X1-X58). Table 3: <[HHP98] CoD-29 8887 XNN> (Nos X1-X49). Table 4: <[HHP98] TW Hya XNNA> N=9, <[HHP98] CoD-29 8887 XNNA> N=4.

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