{"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":"2026-09-07T08:43:27.948Z","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-674-b","name":"TOI-674 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":150.3094928271389,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":164.5865592,"dec_deg":-36.8581092,"epoch_ra_deg":164.899555,"epoch_dec_deg":-37.001809,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-674","semi_major_axis_km":3739946.7675,"periapsis_km":null,"mass_kg":1.4094316167987656e+26,"mass_msun":0.0000708823,"constellation":"Antlia","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/toi-674-b","radius_km":33485.025,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-674","host_v_mag":14.203,"eccentricity":0,"uncertainties":{"mass_kg":[1.970815396371155e+25,1.970815396371155e+25],"radius_km":[1084.277,1084.277],"distance_ly":[0.37605830350740516,0.37801524177370566],"host_mass_solar":[0.01,0.01],"inclination_deg":[0.24,0.24],"host_radius_solar":[0.013,0.013],"host_temperature_k":[57,57],"semi_major_axis_km":[119678.29656,119678.29656],"orbital_period_days":[0.000003,0.000003]},"host_mass_solar":0.42,"inclination_deg":87.21,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.42,"planets_in_system":1,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"M2 V","host_temperature_k":3514,"orbital_period_days":1.977143,"transit_midpoint_bjd":2458641.404552,"equilibrium_temperature_k":635},"designations":[{"catalog":"Exoplanet","designation":"TOI-674 b"},{"catalog":"Host star","designation":"TOI-674"}],"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."}