emamajek on 07-Mar-2021 23:36:25 GMT about
HD 243284 currently (7 March 2021) has no position in SIMBAD, but should probably be cross-identified with TYC 704-2073-1.
Fabricius+2002(HD identifications for Tycho2 stars) and Kharchenko+2009(ASCC-2.5 V3) both cross-identify HD 243284 with TYC 704-2073-1, and Skiff's MK type compendium - while not explicitly using the TYC identifier - places the positions corresponding to the HD types for this 11th mag star within 1" of TYC 704-2073-1 (05:23:57.06+11:00:55.8 (J2000)). So 3 other sources agree with this cross-ID.
Querying III/135A/catalog (HD Catalogue and Extension; Cannon+1918-1924; ADC 1989), one finds HD 243284 reported as a star with photographic magnitude 11.2, spectral type F8, and reported position 05:18.4+10:55(B1900), which Vizier computes to 05:23:56.9+11:00:38(J2000).
This position is within 17.9" of the SIMBAD entry for TYC 704-2073-1 (V=11.04, spectral type G0), which currently lacks a HD alias, and its magnitude and spectral type is a very good fit. The motion of TYC 704-2073-1 is pmRA, pmDec = +5.4, -112.5 mas/yr (GaiaDR2), so it has moved ~11" southward over the past century.
While there could be some ambiguity as the star is a 20" binary (SKF1944; companion B is 05:23:57.17+11:00:36.3(ICRS,J2000.0) for Gaia EDR3), the companion is 1.5 mag fainter and its cooler Teff (5058K in StarHorse/Anders+2019, 5097K in TICv8/Stassun+2019), so would be classified probably as an early K dwarf, but not F8 or G0.
However, TYC 704-2073-1 is the only star within at least 2 arcmin that is brighter than Gmag=12, suggesting that there is no other star in the vicinity that could be a plausible match for a HD star.
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