{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.668","julian_year":2026.668,"time":"2026-09-02T03:15:33.422Z","years_from_j2000":26.668,"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-63208","name":"82 Gem","class":"k0iii_a0iv_orange_giant","category":"star","object_type":"K0III+A0IV: orange giant","mag":6.18,"mag_band":"V","abs_mag":-0.735,"abs_mag_band":"V","distance_ly":787.8173579633074,"distance_method":"parallax","ra_deg":117.14016000000001,"dec_deg":23.14098,"epoch_ra_deg":117.541177,"epoch_dec_deg":23.074368,"epoch_moved_arcsec":0.295,"pm_ra_mas_yr":-10.88,"pm_dec_mas_yr":-2.04,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Gemini","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-63208","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"07486+2308","companions":[{"measured":2016,"magnitude":7.3,"components":"AB","discoverer_code":"WRH  15","separation_arcsec":0.3,"position_angle_deg":28},{"measured":2012,"magnitude":13.5,"components":"AB,C","discoverer_code":"BU 1062","separation_arcsec":4.3,"position_angle_deg":33},{"measured":2017,"magnitude":12,"components":"AB,D","discoverer_code":"BU 1062","separation_arcsec":66.9,"position_angle_deg":24}],"spectral_type":"K0III+A0IV:","uncertainties":{"metallicity_fe_h":[0.03,0.03]},"color_index_bv":0.571,"luminosity_solar":171.39573075084252,"metallicity_fe_h":-0.24,"radial_velocity_km_s":-5,"spectral_type_source":"SIMBAD (2002ApJS..143..513G, quality C)","surface_gravity_log_g":2.54,"surface_temperature_k":5864,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":-10.88,"proper_motion_dec_mas_yr":-2.04,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"82 Gem"},{"catalog":"HD","designation":"HD 63208"},{"catalog":"HIP","designation":"HIP 38106"},{"catalog":"HR","designation":"HR 3021"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}