{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T13:14:28.933Z","years_from_j2000":26.678,"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-4127-b","name":"TOI-4127 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1042.5001532235813,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":105.4045516,"dec_deg":72.4149297,"epoch_ra_deg":106.20413,"epoch_dec_deg":72.376405,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-4127","semi_major_axis_km":45328154.8221,"periapsis_km":null,"mass_kg":4.4416115634307264e+27,"mass_msun":0.00223375,"constellation":"Camelopardalis","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/toi-4127-b","radius_km":76983.667,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-4127","host_v_mag":11.441,"eccentricity":0.7484,"uncertainties":{"mass_kg":[3.226811819586425e+26,3.606436739537769e+26],"radius_km":[3125.2690000000002,3189.05],"distance_ly":[10.707713880440686,10.929500217288071],"eccentricity":[0.0068,0.0064],"host_mass_solar":[0.07,0.07],"inclination_deg":[0.64,0.42],"host_radius_solar":[0.05,0.05],"host_temperature_k":[115,115],"semi_major_axis_km":[2243968.0604999997,2094370.1897999998],"orbital_period_days":[0.0001,0.0001],"argument_of_periastron_deg":[1.6,1.6]},"host_mass_solar":1.23,"inclination_deg":89.39,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.293,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"F V","host_temperature_k":6096,"orbital_period_days":56.3987,"transit_midpoint_bjd":2459765.1094,"equilibrium_temperature_k":556,"argument_of_periastron_deg":128.9},"designations":[{"catalog":"Exoplanet","designation":"TOI-4127 b"},{"catalog":"Host star","designation":"TOI-4127"}],"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."}