{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.672","julian_year":2026.672,"time":"2026-09-03T07:20:11.289Z","years_from_j2000":26.672,"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-37098","name":"HD 37098","class":"b9_5iv_blue_white_subgiant","category":"star","object_type":"B9.5IV blue-white subgiant","mag":5.83,"mag_band":"V","abs_mag":-0.119,"abs_mag_band":"V","distance_ly":504.8861588289862,"distance_method":"parallax","ra_deg":84.286845,"dec_deg":26.924473,"epoch_ra_deg":84.706463,"epoch_dec_deg":26.940928,"epoch_moved_arcsec":0.674,"pm_ra_mas_yr":11.11,"pm_dec_mas_yr":-22.68,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Taurus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-37098","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"05371+2655","companions":[{"measured":2024,"magnitude":6.55,"components":"AB","discoverer_code":"STF 749","separation_arcsec":1.2,"position_angle_deg":318},{"measured":2016,"magnitude":10.14,"components":"BE","discoverer_code":"STF 749","separation_arcsec":120.6,"position_angle_deg":354},{"measured":2016,"magnitude":10.54,"components":"AC","discoverer_code":"STF 749","separation_arcsec":181.3,"position_angle_deg":299}],"spectral_type":"B9.5IV","color_index_bv":-0.075,"luminosity_solar":97.18517029401686,"radial_velocity_km_s":10,"spectral_type_source":"SIMBAD (2008ApJS..176..216A, quality C)","surface_temperature_k":12887,"proper_motion_ra_mas_yr":11.11,"proper_motion_dec_mas_yr":-22.68,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"HD","designation":"HD 37098"},{"catalog":"HIP","designation":"HIP 26396"},{"catalog":"HR","designation":"HR 1902"}],"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."}