{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.668","julian_year":2026.668,"time":"2026-09-01T23:04:53.472Z","years_from_j2000":26.668,"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-99343","name":"HIP 99343","class":"m1_red_star","category":"star","object_type":"M1 red star","mag":10.84,"mag_band":"V","abs_mag":5.238,"abs_mag_band":"V","distance_ly":430.2853890229686,"distance_method":"parallax","ra_deg":302.45369999999997,"dec_deg":6.535416,"epoch_ra_deg":302.78292,"epoch_dec_deg":6.613893,"epoch_moved_arcsec":0.677,"pm_ra_mas_yr":-16.25,"pm_dec_mas_yr":-19.49,"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-99343","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"mass_solar":4.501,"radius_solar":32.091,"spectral_type":"M1","color_index_bv":1.668,"luminosity_solar":0.6995197810512132,"variable_mag_max":10.724,"variable_mag_min":10.964,"radial_velocity_km_s":0,"surface_gravity_log_g":2.059,"surface_temperature_k":4729,"proper_motion_ra_mas_yr":-16.25,"proper_motion_dec_mas_yr":-19.49,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":368.3459},"designations":[{"catalog":"HIP","designation":"HIP 99343"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}