{"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":"2026-09-07T04:17:00.265Z","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":"tic-356227008-b","name":"TIC 356227008 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":1264.2114741040918,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":267.2508238,"dec_deg":50.130808,"epoch_ra_deg":267.416332,"epoch_dec_deg":50.121554,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TIC 356227008","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":3.7624657567085687e+25,"mass_msun":0.000018922,"constellation":"Hercules","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/tic-356227008-b","radius_km":15245.190318029,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TIC 356227008","host_v_mag":12.996,"uncertainties":{"radius_km":[1779.703311226,2191.6083440410002],"distance_ly":[10.14346334699072,10.30980309962626],"host_mass_solar":[0.109789,0.157487],"inclination_deg":[4.47852,2.16369],"orbital_period_days":[0.0000401096,0.00004870518]},"host_mass_solar":1.02,"inclination_deg":86.89858,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.959792,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5731.86,"orbital_period_days":2.96147448702,"transit_midpoint_bjd":2459008.20336119},"designations":[{"catalog":"Exoplanet","designation":"TIC 356227008 b"},{"catalog":"Host star","designation":"TIC 356227008"}],"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."}