{"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":"2026-09-03T21:24:16.430Z","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-45995","name":"HD 45995","class":"b1_5vne_blue_white_main_sequence_star","category":"star","object_type":"B1.5Vne blue-white main-sequence star","mag":6.17,"mag_band":"V","abs_mag":-1.237,"abs_mag_band":"V","distance_ly":988.3526498641808,"distance_method":"parallax","ra_deg":97.789845,"dec_deg":11.251375,"epoch_ra_deg":98.163439,"epoch_dec_deg":11.232881,"epoch_moved_arcsec":0.14,"pm_ra_mas_yr":4.6,"pm_dec_mas_yr":-2.53,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Monoceros","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-45995","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"06312+1115","companions":[{"measured":2019,"magnitude":9.09,"components":null,"discoverer_code":"STF 921","separation_arcsec":16.2,"position_angle_deg":3}],"radius_solar":8.008,"spectral_type":"B1.5Vne","color_index_bv":-0.116,"luminosity_solar":272.14477464543666,"variable_mag_max":6.09,"variable_mag_min":6.21,"radial_velocity_km_s":20,"spectral_type_source":"SIMBAD (1983ApJ...272..182A, quality C)","surface_gravity_log_g":3.581,"surface_temperature_k":19703,"proper_motion_ra_mas_yr":4.6,"proper_motion_dec_mas_yr":-2.53,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: above 7,500 K GSP-Phot's temperature and extinction are degenerate"},"designations":[{"catalog":"HD","designation":"HD 45995"},{"catalog":"HIP","designation":"HIP 31066"},{"catalog":"HR","designation":"HR 2370"}],"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."}