{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.666","julian_year":2026.666,"time":"2026-09-01T09:08:41.749Z","years_from_j2000":26.666,"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":"situla","name":"Situla","class":"k1_5iiibcn0_5_orange_giant","category":"star","object_type":"K1.5IIIbCN0.5 orange giant","mag":5.04,"mag_band":"V","abs_mag":0.956,"abs_mag_band":"V","distance_ly":213.87313081122193,"distance_method":"parallax","ra_deg":339.439095,"dec_deg":-4.228056,"epoch_ra_deg":339.786513,"epoch_dec_deg":-4.089657,"epoch_moved_arcsec":3.694,"pm_ra_mas_yr":-68.36,"pm_dec_mas_yr":-120.47,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Aquarius","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/situla","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"22378-0414","companions":[{"measured":2016,"magnitude":12.2,"components":"AB","discoverer_code":"HJ 5529","separation_arcsec":84.4,"position_angle_deg":252}],"spectral_type":"K1.5IIIbCN0.5","uncertainties":{"metallicity_fe_h":[0.01,0.01]},"color_index_bv":1.14,"luminosity_solar":36.10771451003529,"metallicity_fe_h":0.145,"radial_velocity_km_s":8,"spectral_type_source":"SIMBAD (1989ApJS...71..245K, quality C)","surface_gravity_log_g":2.63,"surface_temperature_k":4583,"metallicity_fe_h_source":"Median of 2 spectroscopic determinations in 2 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them","proper_motion_ra_mas_yr":-68.36,"proper_motion_dec_mas_yr":-120.47,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"63 Kappa Aqr"},{"catalog":"Common name","designation":"Situla"},{"catalog":"HD","designation":"HD 214376"},{"catalog":"HIP","designation":"HIP 111710"},{"catalog":"HR","designation":"HR 8610"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-30T09:56:50.739Z","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."}