{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.672","julian_year":2026.672,"time":"2026-09-03T13:09:20.061Z","years_from_j2000":26.672,"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":"kepler-130-c","name":"Kepler-130 c","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":1032.8165703691711,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":288.4505905,"dec_deg":40.2452006,"epoch_ra_deg":288.673977,"epoch_dec_deg":40.290613,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"Kepler-130","semi_major_axis_km":26628420.984599996,"periapsis_km":null,"mass_kg":5.2256468843174565e+25,"mass_msun":0.0000262805,"constellation":"Lyra","discovered":"2014","featured":false,"url":"https://spacecatalog.org/object/kepler-130-c","radius_km":18496.49,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"Kepler-130","host_v_mag":11.572,"eccentricity":0,"uncertainties":{"radius_km":[1594.525,1594.525],"distance_ly":[7.56356639925128,7.674459567674973],"eccentricity":[0,0.07],"host_mass_solar":[0.1,0.09],"inclination_deg":[0.31,0.66],"host_radius_solar":[0.09,0.1],"host_temperature_k":[51,48],"semi_major_axis_km":[747989.3535,747989.3535],"orbital_period_days":[0.00007,0.00006],"argument_of_periastron_deg":[0,10.89]},"host_mass_solar":1,"inclination_deg":89.34,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":1.17,"planets_in_system":3,"discovery_facility":"Kepler","host_temperature_k":5879,"orbital_period_days":27.50868,"transit_midpoint_bjd":2455015.1039,"equilibrium_temperature_k":683,"argument_of_periastron_deg":0},"designations":[{"catalog":"Exoplanet","designation":"Kepler-130 c"},{"catalog":"Host star","designation":"Kepler-130"}],"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."}