{"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":"2026-09-02T23:26:48.072Z","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-86122","name":"HD 86122","class":"f8_yellow_white_star","category":"star","object_type":"F8 yellow-white star","mag":8.57,"mag_band":"V","abs_mag":2.291,"abs_mag_band":"V","distance_ly":587.6692136827837,"distance_method":"parallax","ra_deg":149.233215,"dec_deg":20.777165,"epoch_ra_deg":149.606166,"epoch_dec_deg":20.649332,"epoch_moved_arcsec":2.262,"pm_ra_mas_yr":-73.52,"pm_dec_mas_yr":-42.31,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Leo","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-86122","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"age_years":1956409200,"mass_solar":1.568,"radius_solar":2.338,"spectral_type":"F8","color_index_bv":0.416,"luminosity_solar":10.558445924300798,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1993yCat.3135....0C, quality E)","surface_gravity_log_g":3.833,"surface_temperature_k":6499,"proper_motion_ra_mas_yr":-73.52,"proper_motion_dec_mas_yr":-42.31,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":8.7287},"designations":[{"catalog":"HD","designation":"HD 86122"},{"catalog":"HIP","designation":"HIP 48778"}],"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."}