{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T07:58:51.896Z","years_from_j2000":26.685,"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-1670-c","name":"TOI-1670 c","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":548.1612393371992,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":259.0172522,"dec_deg":72.1611806,"epoch_ra_deg":258.907086,"epoch_dec_deg":72.130271,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1670","semi_major_axis_km":37249869.804299995,"periapsis_km":null,"mass_kg":1.195818497846734e+27,"mass_msun":0.000601394,"constellation":"Draco","discovered":"2022","featured":false,"url":"https://spacecatalog.org/object/toi-1670-c","radius_km":70562.603799495,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1670","host_v_mag":9.889,"eccentricity":0.09,"uncertainties":{"mass_kg":[1.5184996798053766e+26,1.7083121397810487e+26],"radius_km":[1787.300011012,1787.300011012],"distance_ly":[2.230909623582525,2.2504790062455293],"eccentricity":[0.04,0.05],"host_mass_solar":[0.02,0.02],"inclination_deg":[0.04,0.04],"host_radius_solar":[0.019,0.019],"host_temperature_k":[61,61],"semi_major_axis_km":[747989.3535,747989.3535],"orbital_period_days":[0.00021,0.000022],"argument_of_periastron_deg":[29.4,28.6]},"host_mass_solar":1.21,"inclination_deg":88.84,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.316,"planets_in_system":2,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"F7 V","host_temperature_k":6170,"orbital_period_days":40.74976,"transit_midpoint_bjd":2458750.88286,"equilibrium_temperature_k":684,"argument_of_periastron_deg":105.5},"designations":[{"catalog":"Exoplanet","designation":"TOI-1670 c"}],"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."}