{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.673","julian_year":2026.673,"time":"2026-09-03T22:32:29.813Z","years_from_j2000":26.673,"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":"hd-91752","name":"35 LMi","class":"f3v_yellow_white_main_sequence_star","category":"star","object_type":"F3V yellow-white main-sequence star","mag":6.29,"mag_band":"V","abs_mag":2.886,"abs_mag_band":"V","distance_ly":156.4298172549936,"distance_method":"parallax","ra_deg":159.089235,"dec_deg":36.326927,"epoch_ra_deg":159.474007,"epoch_dec_deg":36.187656,"epoch_moved_arcsec":1.336,"pm_ra_mas_yr":36.92,"pm_dec_mas_yr":-33.84,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Leo Minor","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-91752","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"age_years":2414546000,"mass_solar":1.412,"radius_solar":1.866,"spectral_type":"F3V","uncertainties":{"metallicity_fe_h":[0.091,0.091]},"color_index_bv":0.436,"luminosity_solar":6.103795855585306,"metallicity_fe_h":-0.22,"radial_velocity_km_s":-24,"spectral_type_source":"SIMBAD (2018ApJS..238...29P, quality C)","surface_gravity_log_g":4.006,"surface_temperature_k":6461,"metallicity_fe_h_source":"Median of 6 spectroscopic determinations in 8 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":36.92,"proper_motion_dec_mas_yr":-33.84,"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":5.4953},"designations":[{"catalog":"Bayer/Flamsteed","designation":"35 LMi"},{"catalog":"HD","designation":"HD 91752"},{"catalog":"HIP","designation":"HIP 51914"},{"catalog":"HR","designation":"HR 4150"}],"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."}