{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T03:39:56.209Z","years_from_j2000":26.682,"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":"hd-244022","name":"HD 244022","class":"g0_yellow_star","category":"star","object_type":"G0 yellow star","mag":9.27,"mag_band":"V","abs_mag":4.506,"abs_mag_band":"V","distance_ly":292.5169350754162,"distance_method":"parallax","ra_deg":82.35267,"dec_deg":31.426225,"epoch_ra_deg":82.787372,"epoch_dec_deg":31.447503,"epoch_moved_arcsec":1.232,"pm_ra_mas_yr":-2.13,"pm_dec_mas_yr":-46.14,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Auriga","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-244022","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"05294+3126","age_years":4408828000,"companions":[{"measured":2022,"magnitude":11.03,"components":"AB","discoverer_code":"A  1035","separation_arcsec":1.9,"position_angle_deg":120}],"mass_solar":0.971,"radius_solar":0.949,"spectral_type":"G0","color_index_bv":0.7,"luminosity_solar":1.3727770182085481,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1993yCat.3135....0C, quality E)","surface_gravity_log_g":4.401,"surface_temperature_k":5653,"proper_motion_ra_mas_yr":-2.13,"proper_motion_dec_mas_yr":-46.14,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: Gaia's classifier calls the source a binary, which GSP-Phot fitted as one star","bolometric_luminosity_solar":0.8245},"designations":[{"catalog":"HD","designation":"HD 244022"},{"catalog":"HIP","designation":"HIP 25711"}],"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."}