{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T10:20:51.958Z","years_from_j2000":26.666,"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-71755","name":"HD 71755","class":"f7v_yellow_white_main_sequence_star","category":"star","object_type":"F7V yellow-white main-sequence star","mag":8.12,"mag_band":"V","abs_mag":3.729,"abs_mag_band":"V","distance_ly":246.34167205654597,"distance_method":"parallax","ra_deg":127.02447000000001,"dec_deg":-26.999947,"epoch_ra_deg":127.306838,"epoch_dec_deg":-27.087689,"epoch_moved_arcsec":2.559,"pm_ra_mas_yr":-11.93,"pm_dec_mas_yr":95.2,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Pyxis","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-71755","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"08281-2700","age_years":6079652000,"companions":[{"measured":2016,"magnitude":16,"components":null,"discoverer_code":"SKF1453","separation_arcsec":18.1,"position_angle_deg":162}],"mass_solar":1.067,"radius_solar":1.24,"spectral_type":"F7V","color_index_bv":0.548,"luminosity_solar":2.8080187281166356,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1982MSS...C03....0H, quality C)","surface_gravity_log_g":4.181,"surface_temperature_k":5954,"proper_motion_ra_mas_yr":-11.93,"proper_motion_dec_mas_yr":95.2,"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":1.7347},"designations":[{"catalog":"HD","designation":"HD 71755"},{"catalog":"HIP","designation":"HIP 41522"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}