{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.654","julian_year":2026.654,"time":"2026-08-27T17:43:39.814Z","years_from_j2000":26.654,"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-33262","name":"ζ Dor","class":"f9vfe_0_5_yellow_white_main_sequence_star","category":"star","object_type":"F9VFe-0.5 yellow-white main-sequence star","mag":4.71,"mag_band":"V","abs_mag":4.379,"abs_mag_band":"V","distance_ly":37.98254096700335,"distance_method":"parallax","ra_deg":76.377795,"dec_deg":-57.472704,"epoch_ra_deg":76.494522,"epoch_dec_deg":-57.434538,"epoch_moved_arcsec":3.243,"pm_ra_mas_yr":-31.87,"pm_dec_mas_yr":117.42,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Dorado","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-33262","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"05055-5728","age_years":3697484700,"companions":[{"measured":2016,"magnitude":9.11,"components":null,"discoverer_code":"SHY  22","separation_arcsec":321.6,"position_angle_deg":155}],"mass_solar":1.089,"radius_solar":1.131,"spectral_type":"F9VFe-0.5","color_index_bv":0.526,"luminosity_solar":1.543121065657792,"radial_velocity_km_s":-2.4,"spectral_type_source":"SIMBAD (2006AJ....132..161G, quality C)","surface_gravity_log_g":4.243,"surface_temperature_k":6038,"proper_motion_ra_mas_yr":-31.87,"proper_motion_dec_mas_yr":117.42,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":1.5517},"designations":[{"catalog":"Bayer/Flamsteed","designation":"Zeta Dor"},{"catalog":"Gliese","designation":"Gl 189"},{"catalog":"HD","designation":"HD 33262"},{"catalog":"HIP","designation":"HIP 23693"},{"catalog":"HR","designation":"HR 1674"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-27T16:03:54.983Z","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."}