70 Oph B Archives

The left panel shows the relative astrometric orbit of 70 Oph B around 70 Oph A. Red points denote archival visual and micrometric measurements from the WDS/ORB6 catalog, while the solid black curve shows the maximum-likelihood joint orbital solution. 50 orbits color-coded by companion mass are randomly drawn from the posterior and plotted, but they are indistinguishable from the black curve because of the tight constraint on the orbit. The dashed line marks the line of nodes, and the star indicates the primary’s position. The right panel shows the RV variation of 70 Oph A measured by eight instruments. Colors correspond to individual RV datasets as indicated in the legend. Residuals relative to the best-fit model are shown. -- astro-ph.EP

Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report

A Century of Radial Velocity and Astrometric Monitoring of 70 Oph AB: New PFS Data and Constraints on Planetary Companions

by Keith CowingMarch 24, 2026March 24, 2026

At a distance of 5.1 pc, the 70 Oph AB binary star system is one of the most favorable targets for future direct imaging and astrometry missions surveying mature, terrestrial […]

SEDs scaled to the EEID (top panel) and to the semi-major axis of each planet b (bottom panel). In the bottom panel the wavelength range is changed to expand the X-ray and ultraviolet range. The Sun at 1 au is overplotted in black for reference in both panels. Dashed lines show regions where proxies were used. -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release, Stellar Cartography

The MUSCLES Extension for Atmospheric Transmission Spectroscopy: Spectral energy distributions For 20 Exoplanet Host Stars That JWST Observed in Cycle 1

by Keith CowingJanuary 9, 2026January 9, 2026

Correctly interpreting JWST spectra of close-in exoplanets requires a measurement of the X-ray and ultraviolet light that the planets receive from their host stars. Here we provide spectral energy distributions […]

70 Oph B

A Century of Radial Velocity and Astrometric Monitoring of 70 Oph AB: New PFS Data and Constraints on Planetary Companions

The MUSCLES Extension for Atmospheric Transmission Spectroscopy: Spectral energy distributions For 20 Exoplanet Host Stars That JWST Observed in Cycle 1

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HARMONI@ELT: Instrument Design, Performance, And Science Capabilities

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