There are 88 stars which lack colors, but have measured parallaxes in Gaia EDR3 that place them within 20 pc from the Sun. Among them we found two new common parallax and proper motion (CPPM) companions separated from their primaries by about 3″. The CPPM companion of a nearby (d = 14.98 pc) F1 star, HD 105452 B, was already imaged with the Hubble Space Telescope and is now confirmed with Gaia data and photometrically classified by us as M4 dwarf. The other CPPM companion, SCR J1214-2345 B orbiting an M4.5 dwarf at d = 10.77 pc, represents the faintest brown dwarf discovery made by Gaia so far. It was also imaged by the VISTA Hemisphere Survey and partly detected in the near-infrared. Our photometric classification led to an uncertain spectral type of T1 3 and needs to be confirmed by spectroscopic follow-up.

有 88 颗恒星没有颜色，但在 Gaia EDR3 中测量了视差，将它们置于距太阳 20 pc 以内。其中，我们发现了两个新的常见视差和自行（CPPM）伴星，它们与原色相距约 3 英寸。附近的一颗 ( d = 14.98 pc) F1 恒星的 CPPM 伴星 HD 105452 B 已经用哈勃太空望远镜拍摄过，现在被盖亚数据证实，并被我们光度分类为 M4 矮星。另一个 CPPM 伴星 SCR J1214-2345 B 在d处围绕 M4.5 矮星运行 = 10.77 pc，代表 Gaia 迄今为止发现的最微弱的褐矮星。它也由 VISTA 半球测量成像，并在近红外中部分检测到。我们的光度分类导致 T1 3 的光谱类型不确定，需要通过光谱随访来确认。