{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T13:52:58.563Z","years_from_j2000":26.678,"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-27111","name":"HIP 27111","class":"sdf6_yellow_white_subdwarf","category":"star","object_type":"sdF6 yellow-white subdwarf","mag":11.35,"mag_band":"V","abs_mag":10.284,"abs_mag_band":"V","distance_ly":53.284819740339806,"distance_method":"parallax","ra_deg":86.23661999999999,"dec_deg":9.242081,"epoch_ra_deg":86.605332,"epoch_dec_deg":9.248484,"epoch_moved_arcsec":18.803,"pm_ra_mas_yr":38.91,"pm_dec_mas_yr":-703.76,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Orion","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-27111","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"05449+0915","companions":[{"measured":1991,"magnitude":12.84,"components":null,"discoverer_code":"HDS 769","separation_arcsec":1.1,"position_angle_deg":166}],"spectral_type":"sdF6","color_index_bv":0.699,"luminosity_solar":0.006705018801628409,"variable_mag_max":11.278,"variable_mag_min":11.398,"radial_velocity_km_s":-5.7,"spectral_type_source":"SIMBAD (1943ApJ....98..209P, quality D)","proper_motion_ra_mas_yr":38.91,"proper_motion_dec_mas_yr":-703.76},"designations":[{"catalog":"HIP","designation":"HIP 27111"}],"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."}