{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.679","julian_year":2026.679,"time":"2026-09-05T20:53:09.355Z","years_from_j2000":26.679,"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-25015-b","name":"HD 25015 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":122.09011687070856,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":59.4335463,"dec_deg":-20.2673347,"epoch_ra_deg":59.730625,"epoch_dec_deg":-20.189646,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 25015","semi_major_axis_km":934687496.1336,"periapsis_km":null,"mass_kg":1.7229276991997726e+28,"mass_msun":0.00866485,"constellation":"Eridanus","discovered":"2019","featured":false,"url":"https://spacecatalog.org/object/hd-25015-b","radius_km":79726.25,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 25015","host_v_mag":8.87,"eccentricity":0.341,"uncertainties":{"mass_kg":[3.4602811453505296e+27,2.196130161924498e+27],"distance_ly":[0.2240694314914027,0.22472174424683622],"eccentricity":[0.077,0.085],"host_mass_solar":[0.101,0.101],"inclination_deg":[3.777,7.54],"host_radius_solar":[0.04,0.04],"host_temperature_k":[63,63],"semi_major_axis_km":[65673465.23729999,72704565.16019998],"orbital_period_days":[506.67463,618.42583],"argument_of_periastron_deg":[14.806,13.666]},"host_mass_solar":0.86,"inclination_deg":32.046,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.83,"planets_in_system":1,"discovery_facility":"La Silla Observatory","host_spectral_type":"K2 V","host_temperature_k":5160,"orbital_period_days":6134.427,"periastron_epoch_bjd":2449842.799,"equilibrium_temperature_k":90.69,"argument_of_periastron_deg":87.981},"designations":[{"catalog":"Exoplanet","designation":"HD 25015 b"},{"catalog":"Host star","designation":"HD 25015"}],"source":{"id":"exoplanet_archive","name":"NASA Exoplanet Archive (Planetary Systems Composite Parameters)","url":"https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars","license":"Public domain (NASA)"},"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."}