{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T01:02:09.349Z","years_from_j2000":26.685,"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":"hip-108097","name":"HIP 108097","class":"f8_yellow_white_star","category":"star","object_type":"F8 yellow-white star","mag":9.33,"mag_band":"V","abs_mag":3.524,"abs_mag_band":"V","distance_ly":472.69028431543336,"distance_method":"parallax","ra_deg":328.51854000000003,"dec_deg":28.875809,"epoch_ra_deg":328.818985,"epoch_dec_deg":29.001814,"epoch_moved_arcsec":2.218,"pm_ra_mas_yr":31.22,"pm_dec_mas_yr":-77.04,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Pegasus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-108097","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"21540+2852","companions":[{"measured":2015,"magnitude":12.79,"components":null,"discoverer_code":"GRV 519","separation_arcsec":22.1,"position_angle_deg":318}],"spectral_type":"F8","color_index_bv":0.57,"luminosity_solar":3.391563869058217,"variable_mag_max":9.286,"variable_mag_min":9.396,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (quality D)","proper_motion_ra_mas_yr":31.22,"proper_motion_dec_mas_yr":-77.04},"designations":[{"catalog":"HIP","designation":"HIP 108097"}],"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."}