{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.687","julian_year":2026.687,"time":"2026-09-08T22:45:37.859Z","years_from_j2000":26.687,"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-2084-b","name":"TOI-2084 b","class":"neptune_like_planet","category":"exoplanet","object_type":"Neptune-like planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":373.60886911075244,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":259.2545389,"dec_deg":72.7470231,"epoch_ra_deg":259.127523,"epoch_dec_deg":72.716689,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-2084","semi_major_axis_km":7488869.407241999,"periapsis_km":null,"mass_kg":3.977463799949058e+25,"mass_msun":0.0000200032,"constellation":"Draco","discovered":"2023","featured":false,"url":"https://spacecatalog.org/object/toi-2084-b","radius_km":15753.907000000003,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-2084","host_v_mag":15.115,"uncertainties":{"radius_km":[829.153,829.153],"distance_ly":[1.1056701204597603,1.1154548117912626],"host_mass_solar":[0.027,0.029],"inclination_deg":[0.15,0.15],"host_radius_solar":[0.014,0.014],"host_temperature_k":[52,49],"semi_major_axis_km":[154085.806821,154085.806821],"orbital_period_days":[0.0000096,0.0000096]},"host_mass_solar":0.453,"inclination_deg":89.15,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":0.475,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"M2+/-0.5","host_temperature_k":3551,"orbital_period_days":6.0784247,"transit_midpoint_bjd":2458741.07323,"equilibrium_temperature_k":527},"designations":[{"catalog":"Exoplanet","designation":"TOI-2084 b"},{"catalog":"Host star","designation":"TOI-2084"}],"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."}