{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.671","julian_year":2026.671,"time":"2026-09-03T04:33:59.395Z","years_from_j2000":26.671,"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-87127","name":"HD 87127","class":"f5_yellow_white_star","category":"star","object_type":"F5 yellow-white star","mag":6.75,"mag_band":"V","abs_mag":3.639,"abs_mag_band":"V","distance_ly":136.63864825514162,"distance_method":"parallax","ra_deg":150.97296,"dec_deg":38.020436,"epoch_ra_deg":151.373839,"epoch_dec_deg":37.889662,"epoch_moved_arcsec":4.273,"pm_ra_mas_yr":-100.9,"pm_dec_mas_yr":-124.42,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Leo Minor","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-87127","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"10039+3801","age_years":3726859800,"companions":[{"measured":2015,"magnitude":13.49,"components":null,"discoverer_code":"HJ 2517","separation_arcsec":42,"position_angle_deg":134}],"mass_solar":1.258,"radius_solar":1.632,"spectral_type":"F5","color_index_bv":0.533,"luminosity_solar":3.0507034978225147,"radial_velocity_km_s":30.7,"spectral_type_source":"SIMBAD (1993yCat.3135....0C, quality E)","surface_gravity_log_g":4,"surface_temperature_k":6151,"proper_motion_ra_mas_yr":-100.9,"proper_motion_dec_mas_yr":-124.42,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":3.4048},"designations":[{"catalog":"HD","designation":"HD 87127"},{"catalog":"HIP","designation":"HIP 49308"}],"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."}