{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.683","julian_year":2026.683,"time":"2026-09-07T10:30:07.652Z","years_from_j2000":26.683,"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-6281-b","name":"TOI-6281 b","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":188.3393264689112,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":172.3785238,"dec_deg":-40.6094246,"epoch_ra_deg":172.704124,"epoch_dec_deg":-40.757438,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-6281","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":2.6038651903570413e+25,"mass_msun":0.0000130952,"constellation":"Centaurus","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/toi-6281-b","radius_km":12272.489615794,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-6281","host_v_mag":10.885,"uncertainties":{"radius_km":[1047.0766041880001,1184.600112111],"distance_ly":[0.3630120483987354,0.36496898666503585],"host_mass_solar":[0.087276,0.075479],"inclination_deg":[7.41451,3.64477],"orbital_period_days":[0.00000407437,0.0000040443]},"host_mass_solar":0.65,"inclination_deg":85.04992,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.874219,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":4533.23,"orbital_period_days":1.05426244177,"transit_midpoint_bjd":2459329.65318174,"equilibrium_temperature_k":2240},"designations":[{"catalog":"Exoplanet","designation":"TOI-6281 b"},{"catalog":"Host star","designation":"TOI-6281"}],"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."}