{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.674","julian_year":2026.674,"time":"2026-09-04T00:35:14.891Z","years_from_j2000":26.674,"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-17044","name":"HIP 17044","class":"yellow_star","category":"star","object_type":"Yellow star","mag":10.4,"mag_band":"V","abs_mag":5.441,"abs_mag_band":"V","distance_ly":320.074865897837,"distance_method":"parallax","ra_deg":54.806129999999996,"dec_deg":24.466521,"epoch_ra_deg":55.205609,"epoch_dec_deg":24.553802,"epoch_moved_arcsec":1.318,"pm_ra_mas_yr":20.2,"pm_dec_mas_yr":-45.09,"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/hip-17044","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"03392+2428","age_years":4888174000,"companions":[{"measured":2024,"magnitude":15.5,"components":null,"discoverer_code":"CDM   1","separation_arcsec":0.8,"position_angle_deg":351}],"mass_solar":1.034,"radius_solar":1.084,"color_index_bv":0.616,"luminosity_solar":0.5802297599818736,"radial_velocity_km_s":0,"surface_gravity_log_g":4.372,"surface_temperature_k":5894,"proper_motion_ra_mas_yr":20.2,"proper_motion_dec_mas_yr":-45.09,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":1.273},"designations":[{"catalog":"HIP","designation":"HIP 17044"}],"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."}