{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T01:15:57.934Z","years_from_j2000":26.682,"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-2076-d","name":"TOI-2076 d","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":136.68920249368773,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":217.3920159,"dec_deg":39.7903991,"epoch_ra_deg":217.662042,"epoch_dec_deg":39.670381,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-2076","semi_major_axis_km":29650297.972739995,"periapsis_km":null,"mass_kg":4.359682543487707e+25,"mass_msun":0.0000219255,"constellation":"Boötes","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/toi-2076-d","radius_km":20856.387000000002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-2076","host_v_mag":9.139,"uncertainties":{"mass_kg":[1.6124853243036724e+25,1.6124853243036724e+25],"radius_km":[829.153,829.153],"distance_ly":[0.17155825467900704,0.17221056743444052],"host_mass_solar":[0.026,0.026],"inclination_deg":[0.014,0.014],"host_radius_solar":[0.03,0.03],"host_temperature_k":[53,54],"semi_major_axis_km":[284235.95433,284235.95433],"orbital_period_days":[0.00059,0.00059]},"host_mass_solar":0.849,"inclination_deg":89.164,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.758,"planets_in_system":4,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"K V","host_temperature_k":5187,"orbital_period_days":35.12803,"transit_midpoint_bjd":2458837.9363,"eccentricity_upper_limit":0.027,"equilibrium_temperature_k":490,"argument_of_periastron_deg":90},"designations":[{"catalog":"Exoplanet","designation":"TOI-2076 d"}],"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."}