{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.687","julian_year":2026.687,"time":"2026-09-09T00:57:15.002Z","years_from_j2000":26.687,"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-1846-b","name":"TOI-1846 b","class":"super_earth","category":"exoplanet","object_type":"Super-Earth","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":154.1075838456504,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":257.9549645,"dec_deg":54.5278483,"epoch_ra_deg":258.094694,"epoch_dec_deg":54.494537,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-1846","semi_major_axis_km":5454338.365722,"periapsis_km":null,"mass_kg":2.311228964835264e+25,"mass_msun":0.0000116235,"constellation":"Draco","discovered":"2025","featured":false,"url":"https://spacecatalog.org/object/toi-1846-b","radius_km":11429.5552,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-1846","host_v_mag":13.971,"uncertainties":{"radius_km":[433.71080000000006,414.5765],"distance_ly":[0.31343627898579046,0.3147409044966574],"host_mass_solar":[0.025,0.025],"inclination_deg":[0.17,0.2],"host_radius_solar":[0.012,0.011],"host_temperature_k":[41,47],"semi_major_axis_km":[110702.42431799999,107710.466904],"orbital_period_days":[0.0000044,0.0000042]},"host_mass_solar":0.418,"inclination_deg":88.65,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.397,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_temperature_k":3568,"orbital_period_days":3.9306737,"periastron_epoch_bjd":2458768.02844,"transit_midpoint_bjd":2459565.95523,"equilibrium_temperature_k":568.1},"designations":[{"catalog":"Exoplanet","designation":"TOI-1846 b"},{"catalog":"Host star","designation":"TOI-1846"}],"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."}