{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-05T21:33:57.293Z","years_from_j2000":26.679,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"hip-79551","name":"HIP 79551","class":"m2_5v_red_dwarf","category":"star","object_type":"M2.5V red dwarf","mag":12.23,"mag_band":"V","abs_mag":10.515,"abs_mag_band":"V","distance_ly":71.84050838140077,"distance_method":"parallax","ra_deg":243.48459000000003,"dec_deg":33.773418,"epoch_ra_deg":243.737628,"epoch_dec_deg":33.704284,"epoch_moved_arcsec":7.357,"pm_ra_mas_yr":-263.04,"pm_dec_mas_yr":-82.85,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Corona Borealis","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-79551","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"16147+3352","companions":[{"measured":2018,"magnitude":15,"components":"Ea,Eb","discoverer_code":"YSC 152","separation_arcsec":0.5,"position_angle_deg":29},{"measured":2015,"magnitude":14.85,"components":"EF","discoverer_code":"RAO  65","separation_arcsec":30.7,"position_angle_deg":239}],"spectral_type":"M2.5V","luminosity_solar":0.005420008904016233,"variable_mag_max":12.099,"variable_mag_min":12.359,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (2015A&A...577A.128A, quality C)","proper_motion_ra_mas_yr":-263.04,"proper_motion_dec_mas_yr":-82.85},"designations":[{"catalog":"Gliese","designation":"Gl 615.2C"},{"catalog":"HIP","designation":"HIP 79551"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-02T19:50:56.720Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}