astrometric Archives

A demonstration of the limitations of the PSPT data processing pipeline, which did not process the limb uniformly with the rest of the Solar disc. The solid blue line is the stated extent of the solar disk in the original dataset, and the dashed red line is the extent to which the data has been cleaned. Note between the red and blue lines there exists a slight intensity increase — an example of the difference between the processed and unprocessed data separated by this boundary. -- astro-ph.SR

Astronomy & Telescopes, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography

Astrometric Exoplanet Detection Survives Solar-like Stellar Contamination

by Keith CowingMay 23, 2026May 23, 2026

Astrometric monitoring of stars provides a promising method for discovery of low-mass planets around nearby Sun-like stars.

A giant planet in another star system -- Grok via Astrobiology.com

Astronomy & Telescopes, Beta Pictoris, Exoplanets, -moons, -comets, Gaia Mission, Imaging & Spectroscopy, Status Report, Stellar Cartography

Detection And Characterisation Of Giant Planets With Gaia Astrometry

by Keith CowingNovember 16, 2024November 16, 2024

Astrometric observations with Gaia are expected to play a valuable role in future exoplanet surveys. With current data from Gaia’s third data release (DR3), we are sensitive to periods from […]

Astronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Status Report, Stellar Cartography

NASA ROSES-24 Amendment 29: New Opportunity D.20 Exoplanet Mass Measurement Program

by Keith CowingJuly 13, 2024

D.20 Exoplanet Mass Measurement Program (EMMP) solicits investigations that will identify and mitigate systematics that currently limit the precision of radial velocity or astrometry observations from measuring the masses of temperate […]