Searching for Stars Closely Encountering with the Solar System

Abstract

Based on a new version of the Hipparcos catalog and currently available radial velocity data, we have searched for stars that either have encountered or will encounter the solar neighborhood within less than 3 pc in the time interval from -2 Myr to +2 Myr. Nine new candidates within 30 pc of the Sun have been found. To construct the stellar orbits relative to the solar orbit, we have used the epicyclic approximation. We show that, given the errors in the observational data, the probability that the well-known star HIP 89 825 (GL 710) encountering with the Sun most closely falls into the Oort cloud is 0.86 in the time interval 1.45-+0.06 Myr. This star also has a nonzero probability, 0.0001, of falling into the region d<1000 AU, where its influence on Kuiper Belt objects becomes possible.

11 pages, 3 figures

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• On the accuracy of close stellar approaches determination
• The completeness-corrected rate of stellar encounters with the Sun from the first Gaia data release
• Effect of Different Stellar Galactic Environments on Planetary Discs I: The Solar Neighbourhood and the Birth Cloud of the Sun
• Habitability in Different Milky Way Stellar Environments: a Stellar Interaction Dynamical Approach
• Impact of a Pioneer/Rindler-type acceleration on the Oort cloud
• Searching for Stars Closely Encountering with the Solar System Based on Data from the Gaia DR1 and RAVE5 Catalogues
• The Feasibility of Directly Imaging Nearby Cold Jovian Planets with MIRI/JWST
• Analysis of Close Stellar Encounters with the Solar System
• An independent confirmation of the future flyby of Gliese 710 to the solar system using Gaia DR2
• Search for Close Stellar Encounters with the Solar System Based on Data from the Gaia DR3 Catalogue
• The Solar Neighborhood. XLIII: Discovery of New Nearby Stars with pm < 0.18 arcsec yr-1 (TINYMO sample)
• Correlating Intrinsic Stellar Parameters with Mg II Self-Reversal Depths
• Search for Close Stellar Encounters with the Solar System from Data on Nearby Dwarfs
• Study of Close Stellar Encounters with the Solar System Based on Data from the Gaia EDR3 Catalogue
• Deep and fast Solar System flybys: The controversial case of WD 0810-353
• Phenomenological constraints on Lemaitre-Tolman-Bondi cosmological inhomogeneities from solar system dynamics
• Searching for Axion-Like Particles with X-ray Observations of Alpha Centauri