{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T11:44:11.933Z","years_from_j2000":26.683,"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-102392","name":"HD 102392","class":"k4_5v_orange_dwarf","category":"star","object_type":"K4.5V orange dwarf","mag":9.03,"mag_band":"V","abs_mag":7.009,"abs_mag_band":"V","distance_ly":82.71782357825417,"distance_method":"parallax","ra_deg":176.765985,"dec_deg":-11.824048,"epoch_ra_deg":177.106508,"epoch_dec_deg":-11.97374,"epoch_moved_arcsec":5.739,"pm_ra_mas_yr":-206.32,"pm_dec_mas_yr":-60.74,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Crater","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-102392","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"11471-1149","age_years":11437374000,"companions":[{"measured":2025,"magnitude":12.71,"components":"AB","discoverer_code":"RST3756","separation_arcsec":1.1,"position_angle_deg":136}],"mass_solar":0.733,"radius_solar":0.819,"spectral_type":"K4.5V","color_index_bv":1.126,"luminosity_solar":0.1368989130700734,"radial_velocity_km_s":23,"spectral_type_source":"SIMBAD (2006AJ....132..161G, quality C)","surface_gravity_log_g":4.505,"surface_temperature_k":4403,"proper_motion_ra_mas_yr":-206.32,"proper_motion_dec_mas_yr":-60.74,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.2226},"designations":[{"catalog":"Gliese","designation":"Gl 444A"},{"catalog":"HD","designation":"HD 102392"},{"catalog":"HIP","designation":"HIP 57494"}],"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."}