A strong candidate: (GD 258 = WD 0258+258) — Baltic Astronomy , Vol. 18, p. 258-262 (2009).
Based on typical content from this era (e.g., Issue #255 and #264), readers of Issue #258 generally found: NASA Imagine the Universe (.gov) white dwarf 258 pdf
White Dwarf 258 is, for all intents and purposes, the "Tau Issue." It served as the vanguard for a massive marketing push introducing the Tau Empire. For gamers of that era, this issue was the first time they saw the distinctive, anime-inspired aesthetic of the Fire Caste warriors and their sleek, heavily armed Battlesuits. A strong candidate: (GD 258 = WD 0258+258)