{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.675","julian_year":2026.675,"time":"2026-09-04T12:14:44.238Z","years_from_j2000":26.675,"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-96673","name":"HIP 96673","class":"yellow_star","category":"star","object_type":"Yellow star","mag":10.29,"mag_band":"V","abs_mag":4.867,"abs_mag_band":"V","distance_ly":396.30185140315024,"distance_method":"parallax","ra_deg":294.81132,"dec_deg":-2.61242,"epoch_ra_deg":295.163172,"epoch_dec_deg":-2.55243,"epoch_moved_arcsec":6.959,"pm_ra_mas_yr":215.25,"pm_dec_mas_yr":-147.42,"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/hip-96673","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"radius_solar":0.857,"uncertainties":{"metallicity_fe_h":[0.08,0.08]},"color_index_bv":0.665,"luminosity_solar":0.9844643639803782,"metallicity_fe_h":-0.61,"radial_velocity_km_s":0,"surface_gravity_log_g":4.458,"surface_temperature_k":5728,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":215.25,"proper_motion_dec_mas_yr":-147.42,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":0.717},"designations":[{"catalog":"HIP","designation":"HIP 96673"}],"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."}