emamajek on 12-Sep-2022 02:54:21 GMT about * 58 Oph
58 Oph: This star appears in the Washington Double Star catalog (WDS J17434-2141 = OCC 401) with a single report of being an occultation binary (sep=0.00, mag(1)=5.10, mag(2)=6.90, epoch=1975). There are no supporting notes in WDS at the time of writing.
However, there seems to be no supporting evidence of binarity from subsequent observations - and the star is considered single in the recent multiplicity survey of Fuhrmann+2017 (2017ApJ...836..139F).
The radial velocity measurements from Beavers & Eitter (1986) [10.2+-0.4 km/s; Fick spectrometer;
1986ApJS...62..147B
], Nordstrom+2004 [10.3+-0.2 km/s; Geneva-Copenhagen survey; Nobs=4; 2004A&A...418..989N], Trifinov+ (2020) [10.28660 km/s; HARPS Nobs=30 taken 2007; 2020A&A...636A..74T] are all remarkably consistent and no RV survey has reported variability or double lines.
Comparison of the proper motions between Hipparcos and Gaia are statistically consistent with any perturbations being within 1.5sigma of zero: dV/dT = 27.32+-38.21 m/s (Kervella+2019; 2019A&A...623A..72K) and dV/dT = 17.67+-12.64 m/s (Kervella+2022; 2022A&A...657A...7K).
Recent observations of lunar occultations have not revealed further evidence of any companions (https://groups.io/g/IOTAoccultations/topic/37396291?p=,,,20,0,0,0::recentpostdate/sticky,,,20,1,40,37396291), neither have recent speckle observations (Tokovinin+2014
2014AJ....147...86T
).
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