{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.686","julian_year":2026.686,"time":"2026-09-08T11:36:56.440Z","years_from_j2000":26.686,"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-824-b","name":"TOI-824 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":208.49937833196083,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":222.1654705,"dec_deg":-57.5888666,"epoch_ra_deg":222.666343,"epoch_dec_deg":-57.700869,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-824","semi_major_axis_km":3256745.645139,"periapsis_km":null,"mass_kg":1.102880240145034e+26,"mass_msun":0.0000554654,"constellation":"Circinus","discovered":"2020","featured":false,"url":"https://spacecatalog.org/object/toi-824-b","radius_km":18662.320600000003,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-824","host_v_mag":11.314,"uncertainties":{"mass_kg":[1.1197814752108837e+25,1.1006705380339512e+25],"radius_km":[1218.2171,1288.3762000000002],"distance_ly":[0.46575130737950965,0.46803440202352675],"host_mass_solar":[0.031,0.032],"inclination_deg":[0.38,0.39],"host_radius_solar":[0.027,0.027],"host_temperature_k":[100,110],"semi_major_axis_km":[47871.318624,47871.318624],"orbital_period_days":[0.000017,0.000018]},"host_mass_solar":0.71,"inclination_deg":83.65,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.695,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"K4 V","host_temperature_k":4600,"orbital_period_days":1.392978,"periastron_epoch_bjd":2458597.81419,"transit_midpoint_bjd":2458639.60354,"equilibrium_temperature_k":1253},"designations":[{"catalog":"Exoplanet","designation":"TOI-824 b"},{"catalog":"Host star","designation":"TOI-824"}],"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."}