{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.667","julian_year":2026.667,"time":"2026-09-01T16:46:52.291Z","years_from_j2000":26.667,"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":"bharani","name":"Bharani","class":"b8vn_blue_white_main_sequence_star","category":"star","object_type":"B8Vn blue-white main-sequence star","mag":3.61,"mag_band":"V","abs_mag":0.081,"abs_mag_band":"V","distance_ly":165.64569186375792,"distance_method":"parallax","ra_deg":42.495945,"dec_deg":27.260507,"epoch_ra_deg":42.891945,"epoch_dec_deg":27.371065,"epoch_moved_arcsec":3.566,"pm_ra_mas_yr":65.47,"pm_dec_mas_yr":-116.59,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Aries","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/bharani","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"02500+2716","companions":[{"measured":2003,"magnitude":null,"components":"Aa,Ab","discoverer_code":"MCA  10","separation_arcsec":0.1,"position_angle_deg":180},{"measured":2010,"magnitude":19.5,"components":"AE","discoverer_code":"JNN   2","separation_arcsec":7.4,"position_angle_deg":32},{"measured":2010,"magnitude":21,"components":"AF","discoverer_code":"JNN   2","separation_arcsec":9,"position_angle_deg":231},{"measured":2010,"magnitude":16.3,"components":"AG","discoverer_code":"JNN   2","separation_arcsec":12.3,"position_angle_deg":25},{"measured":2020,"magnitude":10.66,"components":"AC","discoverer_code":"H 5 116","separation_arcsec":27.7,"position_angle_deg":238},{"measured":2020,"magnitude":11.04,"components":"AB","discoverer_code":"STT  47","separation_arcsec":34.7,"position_angle_deg":296},{"measured":2014,"magnitude":8.8,"components":"AD","discoverer_code":"H 6   5","separation_arcsec":122.3,"position_angle_deg":237}],"wikidata_id":"Q854835","spectral_type":"B8Vn","color_index_bv":-0.1,"luminosity_solar":80.83510373900673,"wikipedia_article":"41 Arietis","radial_velocity_km_s":4,"spectral_type_source":"SIMBAD (1994AJ....107.1556G, quality C)","surface_temperature_k":12432,"proper_motion_ra_mas_yr":65.47,"proper_motion_dec_mas_yr":-116.59,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"41 Ari"},{"catalog":"Common name","designation":"Bharani"},{"catalog":"HD","designation":"HD 17573"},{"catalog":"HIP","designation":"HIP 13209"},{"catalog":"HR","designation":"HR 838"},{"catalog":"IRAS","designation":"IRAS 02470+2703"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}