{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T08:38:34.952Z","years_from_j2000":26.677,"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":"hats-25-b","name":"HATS-25 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1536.711866122654,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":207.9076746,"dec_deg":-23.7812403,"epoch_ra_deg":208.282056,"epoch_dec_deg":-23.91423,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HATS-25","semi_major_axis_km":7723738.0642409995,"periapsis_km":null,"mass_kg":1.1635562115265423e+27,"mass_msun":0.000585169,"constellation":"Hydra","discovered":"2016","featured":false,"url":"https://spacecatalog.org/object/hats-25-b","radius_km":90080.074854,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HATS-25","host_v_mag":13.172,"uncertainties":{"mass_kg":[7.972163276364562e+25,7.972163276364562e+25],"radius_km":[7149.21229,7149.21229],"distance_ly":[28.669145601301743,29.761769466652837],"host_mass_solar":[0.035,0.035],"inclination_deg":[0.71,0.71],"host_radius_solar":[0.069,0.069],"host_temperature_k":[73,73],"semi_major_axis_km":[89758.72241999999,89758.72241999999],"orbital_period_days":[0.0000045,0.0000045]},"host_mass_solar":0.994,"inclination_deg":86.93,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.107,"planets_in_system":1,"discovery_facility":"HATSouth","host_spectral_type":"G","host_temperature_k":5715,"orbital_period_days":4.2986432,"transit_midpoint_bjd":2456870.36872,"eccentricity_upper_limit":0.176,"equilibrium_temperature_k":1277},"designations":[{"catalog":"Exoplanet","designation":"HATS-25 b"},{"catalog":"Host star","designation":"HATS-25"}],"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."}