{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T18:54:46.167Z","years_from_j2000":26.681,"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-92321","name":"HD 92321","class":"k4iii_orange_giant","category":"star","object_type":"K4III orange giant","mag":7.74,"mag_band":"V","abs_mag":null,"abs_mag_band":null,"distance_ly":null,"distance_method":null,"ra_deg":160.05195,"dec_deg":38.403163,"epoch_ra_deg":160.437591,"epoch_dec_deg":38.263061,"epoch_moved_arcsec":0.842,"pm_ra_mas_yr":-27.48,"pm_dec_mas_yr":-15.55,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Leo Minor","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-92321","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"10402+3824","age_years":232813640,"companions":[{"measured":2023,"magnitude":8.85,"components":null,"discoverer_code":"STF1459","separation_arcsec":5.4,"position_angle_deg":151}],"mass_solar":3.602,"radius_solar":17.423,"spectral_type":"K4III","color_index_bv":1.339,"radial_velocity_km_s":25,"spectral_type_source":"SIMBAD (1960AJ.....65...60S, quality C)","surface_gravity_log_g":2.451,"surface_temperature_k":4730,"proper_motion_ra_mas_yr":-27.48,"proper_motion_dec_mas_yr":-15.55,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":127.9213},"designations":[{"catalog":"HD","designation":"HD 92321"},{"catalog":"HIP","designation":"HIP 52223"}],"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."}