{"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":"2026-09-07T10:56:27.884Z","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":"tic-147027702-b","name":"TIC 147027702 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":1491.1412970280705,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":161.7728559,"dec_deg":-43.9317971,"epoch_ra_deg":162.070168,"epoch_dec_deg":-44.073277,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TIC 147027702","semi_major_axis_km":40989816.5718,"periapsis_km":null,"mass_kg":2.0689558137348256e+27,"mass_msun":0.00104051,"constellation":"Vela","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/tic-147027702-b","radius_km":69704.69979165801,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TIC 147027702","host_v_mag":11.286,"eccentricity":0.127,"uncertainties":{"mass_kg":[2.4675619796837367e+26,1.3286872198297045e+26],"radius_km":[4575.487956756,4646.980015875],"distance_ly":[20.531543977269,21.099056074496133],"eccentricity":[0.048,0.055],"host_mass_solar":[0.086,0.074],"inclination_deg":[0.3,0.32],"host_radius_solar":[0.096,0.096],"host_temperature_k":[183,183],"semi_major_axis_km":[1944772.3190999997,2094370.1897999998],"orbital_period_days":[0.00013,0.00013],"argument_of_periastron_deg":[17.4,22.5]},"host_mass_solar":1.406,"inclination_deg":89.52,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":2.136,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":6410,"orbital_period_days":44.40523,"transit_midpoint_bjd":2458550.7314,"equilibrium_temperature_k":863,"argument_of_periastron_deg":223.7},"designations":[{"catalog":"Exoplanet","designation":"TIC 147027702 b"},{"catalog":"Host star","designation":"TIC 147027702"}],"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."}