Gaia DR2 Archives

ShaneAO/ShARCS high-resolution imaging of HIP 18512 (left), ShaneAO/ShARCS imaging of HIP 45839 (center), and Keck/NIRC2 high-contrast imaging of HIP 45839 (right). Each image is oriented such that north is up and and east is to the left. HIP 18512 shows a binary at a separation of 10. ′′9 and a position angle of 12.7 ◦ . The Keck/NIRC2 imaging of HIP 45839 shows a faint source at 5. ′′3 which is not consistent with the observed RV trend and astrometric acceleration. A zoomed-in 0. ′′4 × 0. ′′4 cutout of the source is shown in the inset panel. Images are displayed with an arcsinh stretch to capture a large dynamic range (Lupton et al. 2004). -- astro-ph.EP

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

Gaia Exoplanet Orbits, Demographics, and Evolution Survey (GEODES): Characteristics of Three Long-Period Companions Accelerating their Host Stars

by Keith CowingMay 26, 2026May 26, 2026

The upcoming release of Gaia DR4 will yield thousands of giant planet candidates, eventually enabling studies of giant planet eccentricities, masses, and occurrence rates across a broad range of stellar […]

Comparison of the orbit posteriors incorporating different sources of data. The blue dots mark the location of the planet on 2025-01-01. The colors of the orbit draws match those in Figure 2 for easier cross-referencing. The bottom right panel shows the outer debris disk model fit to ALMA data by Booth et al. (2023). The ❉ indicates two models containing only RV data and only absolute astrometry data respectively, and whose posteriors are therefore completely independent. The models indicated by ✦ include RV data, but distinct sets of astrometric data, making the position angles they indicate on 2025-01-01 effectively independent. -- astro-ph.EP

Astronomy & Telescopes, Epsilon Eridani, Exoplanets, -moons, -comets, Status Report

Revised Mass and Orbit of Epsilon Eridani b: A 1 Jupiter-Mass Planet on a Near-Circular Orbit

by Keith CowingMarch 4, 2025August 13, 2025

The mature Jovian planet ε Eridani b orbits one of the closest sun-like stars at a moderate separation of 3.5 AU, presenting one of the best opportunities to image a […]

Gaia DR2

Gaia Exoplanet Orbits, Demographics, and Evolution Survey (GEODES): Characteristics of Three Long-Period Companions Accelerating their Host Stars

Revised Mass and Orbit of Epsilon Eridani b: A 1 Jupiter-Mass Planet on a Near-Circular Orbit

NASA Establishes Mars Forward Operational Risk and Contamination Evaluation (M-FORCE) Tiger Team to Shape Mars Planetary Protection Protocols

Opportunity to Contribute to NASA DARES Community White Paper on Phototrophic Biosignatures

The Search For Life Elsewhere: Avoiding Hype and Fostering Public Understanding

Panchromatic Spectra of Nearby Low-mass and Sun-like Stars with Directly Imageable Habitable Zones

Alfred: A Flexible, User-Friendly Python Package for Exoplanet Confirmation