{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.794","julian_year":2026.794,"time":"2026-10-17T21:44:45.191Z","years_from_j2000":26.794,"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-8026","name":"HD 8026","class":"f2_yellow_white_star","category":"star","object_type":"F2 yellow-white star","mag":7.81,"mag_band":"V","abs_mag":3.052,"abs_mag_band":"V","distance_ly":291.731876674252,"distance_method":"parallax","ra_deg":20.199585,"dec_deg":56.20726,"epoch_ra_deg":20.620936,"epoch_dec_deg":56.348461,"epoch_moved_arcsec":1.526,"pm_ra_mas_yr":49.31,"pm_dec_mas_yr":-28.48,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Cassiopeia","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-8026","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":"01208+5612","age_years":1422015100,"companions":[{"measured":2016,"magnitude":10,"components":null,"discoverer_code":"BU  782","separation_arcsec":3.2,"position_angle_deg":83}],"mass_solar":1.524,"radius_solar":1.806,"spectral_type":"F2","color_index_bv":0.399,"luminosity_solar":5.238416190277907,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1993yCat.3135....0C, quality E)","surface_gravity_log_g":4.093,"surface_temperature_k":7008,"proper_motion_ra_mas_yr":49.31,"proper_motion_dec_mas_yr":-28.48,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: Gaia's classifier calls the source a binary, which GSP-Phot fitted as one star","bolometric_luminosity_solar":6.968},"designations":[{"catalog":"HD","designation":"HD 8026"},{"catalog":"HIP","designation":"HIP 6295"}],"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."}