{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.669","julian_year":2026.669,"time":"2026-09-02T05:53:16.912Z","years_from_j2000":26.669,"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-110417","name":"HD 110417","class":"g5v_yellow_main_sequence_star","category":"star","object_type":"G5V yellow main-sequence star","mag":8.06,"mag_band":"V","abs_mag":3.56,"abs_mag_band":"V","distance_ly":259.0598138492327,"distance_method":"parallax","ra_deg":190.498275,"dec_deg":-5.220857,"epoch_ra_deg":190.844467,"epoch_dec_deg":-5.368353,"epoch_moved_arcsec":0.889,"pm_ra_mas_yr":-22.3,"pm_dec_mas_yr":-24.79,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Virgo","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-110417","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"age_years":3794380200,"mass_solar":1.335,"radius_solar":2.384,"spectral_type":"G5V","uncertainties":{"metallicity_fe_h":[0.05,0.05]},"color_index_bv":0.747,"luminosity_solar":3.2809529311311896,"metallicity_fe_h":-0.58,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1999MSS...C05....0H, quality C)","surface_gravity_log_g":3.935,"surface_temperature_k":5781,"metallicity_fe_h_source":"One spectroscopic determination, compiled from the literature (PASTEL, Soubiran+ 2016)","proper_motion_ra_mas_yr":-22.3,"proper_motion_dec_mas_yr":-24.79,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":5.8655},"designations":[{"catalog":"HD","designation":"HD 110417"},{"catalog":"HIP","designation":"HIP 61971"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-01T22:58:55.274Z","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."}