{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.685","julian_year":2026.685,"time":"2026-09-08T07:09:34.892Z","years_from_j2000":26.685,"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-161045582-b","name":"TIC 161045582 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":529.1756765903076,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":223.6258514,"dec_deg":49.097725,"epoch_ra_deg":223.852905,"epoch_dec_deg":48.988047,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TIC 161045582","semi_major_axis_km":null,"periapsis_km":null,"mass_kg":3.386219181037712e+25,"mass_msun":0.0000170298,"constellation":"Boötes","discovered":"2026","featured":false,"url":"https://spacecatalog.org/object/tic-161045582-b","radius_km":14323.091116378,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TIC 161045582","host_v_mag":10.642,"uncertainties":{"radius_km":[1437.0648908780001,1655.059993567],"distance_ly":[1.8525682254311024,1.8688760443169397],"host_mass_solar":[0.154528,0.10294],"inclination_deg":[2.37731,1.20401],"orbital_period_days":[0.00015276961,0.00015021456]},"host_mass_solar":1.04,"inclination_deg":88.29234,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":1.07976,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":5683.87,"orbital_period_days":8.85577189959,"transit_midpoint_bjd":2459658.47003513},"designations":[{"catalog":"Exoplanet","designation":"TIC 161045582 b"},{"catalog":"Host star","designation":"TIC 161045582"}],"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."}