{"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":"2026-09-07T13:22:35.963Z","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":"hd-110113-c","name":"HD 110113 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":346.7270604593384,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":190.0365636,"dec_deg":-44.3120777,"epoch_ra_deg":190.404582,"epoch_dec_deg":-44.459693,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 110113","semi_major_axis_km":10172655.2076,"periapsis_km":null,"mass_kg":6.270776261180948e+25,"mass_msun":0.0000315366,"constellation":"Centaurus","discovered":"2021","featured":false,"url":"https://spacecatalog.org/object/hd-110113-c","radius_km":13482.335013077,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 110113","host_v_mag":10.09,"eccentricity":0.045,"uncertainties":{"mass_kg":[7.166601441349655e+24,7.166601441349655e+24],"radius_km":[29621.969282500002,29621.969282500002],"distance_ly":[2.3320181006747154,2.3613721746692224],"eccentricity":[0.038,0.079],"host_mass_solar":[0.06,0.06],"host_radius_solar":[0.018,0.018],"host_temperature_k":[50,50],"semi_major_axis_km":[299195.7414,149597.8707],"orbital_period_days":[0.009,0.008]},"host_mass_solar":0.997,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.968,"planets_in_system":2,"discovery_facility":"La Silla Observatory","host_spectral_type":"G","host_temperature_k":5732,"orbital_period_days":6.744,"transit_midpoint_bjd":2458576.159251,"equilibrium_temperature_k":990},"designations":[{"catalog":"Exoplanet","designation":"HD 110113 c"},{"catalog":"Host star","designation":"HD 110113"}],"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."}