{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.682","julian_year":2026.682,"time":"2026-09-07T02:24:25.382Z","years_from_j2000":26.682,"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":"koi-94-c","name":"KOI-94 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":1555.9355230252788,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":297.3330716,"dec_deg":41.8911186,"epoch_ra_deg":297.557156,"epoch_dec_deg":41.958017,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"KOI-94","semi_major_axis_km":15154264.301909998,"periapsis_km":null,"mass_kg":9.31658187375455e+25,"mass_msun":0.0000468544,"constellation":"Cygnus","discovered":"2013","featured":false,"url":"https://spacecatalog.org/object/koi-94-c","radius_km":27553.392000000003,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"KOI-94","host_v_mag":12.314,"eccentricity":0.43,"uncertainties":{"mass_kg":[9.31658187375455e+25,3.4041356846410864e+25],"radius_km":[2615.021,2615.021],"distance_ly":[15.97840094434326,16.30781888583717],"eccentricity":[0.23,0.23],"host_mass_solar":[0.05,0.05],"inclination_deg":[0.75,0.75],"host_radius_solar":[0.14,0.14],"host_temperature_k":[58,58],"semi_major_axis_km":[194477.23190999997,194477.23190999997],"orbital_period_days":[0.000016,0.000016]},"host_mass_solar":1.277,"inclination_deg":88.36,"stars_in_system":2,"discovery_method":"Transit","host_radius_solar":1.52,"planets_in_system":4,"discovery_facility":"Kepler","host_temperature_k":6182,"orbital_period_days":10.423648,"transit_midpoint_bjd":2454971.0087,"equilibrium_temperature_k":1012},"designations":[{"catalog":"Exoplanet","designation":"KOI-94 c"}],"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."}