{"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":"2026-09-06T02:27:21.210Z","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":"pots-1-b","name":"POTS-1 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":2439.5159812063766,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":203.6087259,"dec_deg":-66.5811639,"epoch_ra_deg":204.088122,"epoch_dec_deg":-66.71887,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"POTS-1","semi_major_axis_km":5585984.491938,"periapsis_km":null,"mass_kg":4.384526761817719e+27,"mass_msun":0.00220504,"constellation":"Musca","discovered":"2013","featured":false,"url":"https://spacecatalog.org/object/pots-1-b","radius_km":67276.1988,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"POTS-1","host_v_mag":17.9083,"uncertainties":{"mass_kg":[1.4615089206059063e+27,1.4615089206059063e+27],"radius_km":[3361.2587000000003,2576.7524000000003],"distance_ly":[151.3447131700119,151.3447131700119],"host_mass_solar":[0.05,0.05],"inclination_deg":[0.34,0.47],"host_radius_solar":[0.028,0.02],"host_temperature_k":[200,200],"semi_major_axis_km":[134638.08362999998,134638.08362999998],"orbital_period_days":[0.00000157,0.00000157]},"host_mass_solar":0.695,"inclination_deg":88.06,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.588,"planets_in_system":1,"discovery_facility":"La Silla Observatory","host_spectral_type":"K5 V","host_temperature_k":4400,"orbital_period_days":3.1606296,"transit_midpoint_bjd":2454231.65488,"equilibrium_temperature_k":841.95},"designations":[{"catalog":"Exoplanet","designation":"POTS-1 b"},{"catalog":"Host star","designation":"POTS-1"}],"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."}