{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T17:53:18.717Z","years_from_j2000":26.681,"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":"toi-2202-c","name":"TOI-2202 c","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":769.5105266384443,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":51.2284214,"dec_deg":-73.9575458,"epoch_ra_deg":51.173524,"epoch_dec_deg":-73.862042,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-2202","semi_major_axis_km":23253493.021608,"periapsis_km":null,"mass_kg":7.004079772923134e+26,"mass_msun":0.000352245,"constellation":"Hydrus","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/toi-2202-c","radius_km":85466.54000000001,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-2202","host_v_mag":13.004,"eccentricity":0.0622,"uncertainties":{"mass_kg":[1.5868321656832825e+26,1.9550683376897005e+26],"distance_ly":[3.3952878920312988,3.427903529802973],"eccentricity":[0.0211,0.0452],"host_mass_solar":[0.023,0.027],"inclination_deg":[2.9,2.4],"host_radius_solar":[0.007,0.007],"host_temperature_k":[50,50],"semi_major_axis_km":[393442.399941,381474.570285],"orbital_period_days":[0.0339,0.0258],"argument_of_periastron_deg":[12.5,129.7]},"host_mass_solar":0.823,"inclination_deg":84.7,"stars_in_system":1,"discovery_method":"Transit Timing Variations","host_radius_solar":0.794,"planets_in_system":2,"discovery_facility":"Multiple Observatories","host_spectral_type":"K8 V","host_temperature_k":5144,"orbital_period_days":24.6744,"equilibrium_temperature_k":560.61,"argument_of_periastron_deg":320.8},"designations":[{"catalog":"Exoplanet","designation":"TOI-2202 c"},{"catalog":"Host star","designation":"TOI-2202"}],"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."}