{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-03T05:29:17.667Z","years_from_j2000":26.671,"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-202046","name":"HD 202046","class":"g8iv_yellow_subgiant","category":"star","object_type":"G8IV yellow subgiant","mag":7.65,"mag_band":"V","abs_mag":2.944,"abs_mag_band":"V","distance_ly":284.85258635545046,"distance_method":"parallax","ra_deg":320.55927,"dec_deg":-80.113963,"epoch_ra_deg":321.460363,"epoch_dec_deg":-79.999994,"epoch_moved_arcsec":7.003,"pm_ra_mas_yr":240.35,"pm_dec_mas_yr":-105.7,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Octans","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-202046","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"21222-8007","companions":[{"measured":2016,"magnitude":13.71,"components":null,"discoverer_code":"LDS 736","separation_arcsec":134.2,"position_angle_deg":2}],"spectral_type":"G8IV","color_index_bv":0.834,"luminosity_solar":5.786287388179521,"radial_velocity_km_s":-3.6,"spectral_type_source":"SIMBAD (1975MSS...C01....0H, quality C)","surface_temperature_k":5125,"proper_motion_ra_mas_yr":240.35,"proper_motion_dec_mas_yr":-105.7,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 202046"},{"catalog":"HIP","designation":"HIP 105514"}],"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."}