Winston Harris (MTSU) and I looked at the output of The Joker and the Lomb-Scargle periodogram on his fake exoplanet radial-velocity data. They maybe look similar. It makes sense, since they are both doing a simple likelihood-based linear fit of periodic functions.
I spent some time putting together a notebook to test the idea that Josh Winn (Princeton) had that the Solar System barycentric radial-velocity correction could be indicative of the stellar astrometry for the very brightest stars, where precise astrometry is (strangely) hard. It should be possible at some level, since the barycentic correction does depend on the astrometry! I love the idea of doing astrometry by taking radial-velocity measurements.
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