{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T12:51:38.114Z","years_from_j2000":26.67,"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-7318","name":"85 φ Psc","class":"k0iii_orange_giant","category":"star","object_type":"K0III orange giant","mag":4.67,"mag_band":"V","abs_mag":-1.01,"abs_mag_band":"V","distance_ly":446.17833699635014,"distance_method":"parallax","ra_deg":18.43728,"dec_deg":24.583713,"epoch_ra_deg":18.802346,"epoch_dec_deg":24.725942,"epoch_moved_arcsec":0.753,"pm_ra_mas_yr":18.58,"pm_dec_mas_yr":-21.26,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Pisces","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-7318","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"01137+2435","age_years":202460560,"companions":[{"measured":2020,"magnitude":9.11,"components":"AB","discoverer_code":"STF  99","separation_arcsec":7.5,"position_angle_deg":227},{"measured":2015,"magnitude":12.74,"components":"AC","discoverer_code":"STF  99","separation_arcsec":142.4,"position_angle_deg":173}],"mass_solar":3.8,"radius_solar":20.76,"spectral_type":"K0III","uncertainties":{"metallicity_fe_h":[0.015,0.015]},"color_index_bv":1.047,"luminosity_solar":220.80047330188992,"metallicity_fe_h":-0.095,"radial_velocity_km_s":6,"spectral_type_source":"SIMBAD (1990ApJS...74.1075M, quality D)","surface_gravity_log_g":2.32,"surface_temperature_k":4919,"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":18.58,"proper_motion_dec_mas_yr":-21.26,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":233.6752},"designations":[{"catalog":"Bayer/Flamsteed","designation":"85 Phi Psc"},{"catalog":"HD","designation":"HD 7318"},{"catalog":"HIP","designation":"HIP 5742"},{"catalog":"HR","designation":"HR 360"}],"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."}