{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.804","julian_year":2026.804,"time":"2026-10-21T19:02:57.214Z","years_from_j2000":26.804,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued position is carried along the great circle the object's own published motion puts it on, at a constant velocity, from the epoch that position was measured at, 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. The motion runs from position_epoch_jyear where the upstream publishes one — a timed pulsar's position belongs to the year it was timed — and from J2000 where it does not. 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-182085","name":"HD 182085","class":"k3_4_v_orange_dwarf","category":"star","object_type":"K3/4(V) orange dwarf","mag":9.66,"mag_band":"V","abs_mag":7.363,"abs_mag_band":"V","distance_ly":93.938907597221,"distance_method":"parallax","ra_deg":290.818605,"dec_deg":-6.58537,"epoch_ra_deg":291.17902,"epoch_dec_deg":-6.535213,"epoch_moved_arcsec":7.308,"pm_ra_mas_yr":-173.94,"pm_dec_mas_yr":-209.97,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Aquila","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-182085","source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0","attribution":"HYG Database v4.1, Astronexus (github.com/astronexus/HYG-Database). Fields derived from it stay under CC BY-SA 4.0.","commercial_use":"allowed"},"radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"19233-0635","age_years":11122264000,"companions":[{"measured":2013,"magnitude":10.6,"components":"Aa,Ab","discoverer_code":"GII 282","separation_arcsec":0.1,"position_angle_deg":121},{"measured":2019,"magnitude":13.19,"components":"AB","discoverer_code":"HDS2745","separation_arcsec":1.3,"position_angle_deg":10}],"mass_solar":0.701,"radius_solar":0.696,"spectral_type":"K3/4(V)","color_index_bv":1.094,"luminosity_solar":0.0988097953941127,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1999MSS...C05....0H, quality E)","surface_gravity_log_g":4.604,"surface_temperature_k":4448,"proper_motion_ra_mas_yr":-173.94,"proper_motion_dec_mas_yr":-209.97,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.1701},"designations":[{"catalog":"HD","designation":"HD 182085"},{"catalog":"HIP","designation":"HIP 95299"}],"updated_at":"2026-10-01T09:42:28.932Z","attribution":"Data from SpaceCatalog.org. Each record names its upstream in `source`, with that producer's terms in `source.license`, the acknowledgement it asks for in `source.attribution`, and whether its terms allow commercial use in `source.commercial_use`; those terms govern the record, and citing SpaceCatalog does not discharge them."}