{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.684","julian_year":2026.684,"time":"2026-09-07T18:51:14.094Z","years_from_j2000":26.684,"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-776-c","name":"TOI-776 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":88.61701398201691,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":178.577997,"dec_deg":-37.5533568,"epoch_ra_deg":178.917969,"epoch_dec_deg":-37.702855,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"TOI-776","semi_major_axis_km":14974746.857069997,"periapsis_km":null,"mass_kg":4.1207958287760514e+25,"mass_msun":0.0000207241,"constellation":"Centaurus","discovered":"2020","featured":false,"url":"https://spacecatalog.org/object/toi-776-c","radius_km":13055.970700000002,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"TOI-776","host_v_mag":11.536,"eccentricity":0.089,"uncertainties":{"mass_kg":[1.4930419669478448e+25,1.5527636456257586e+25],"radius_km":[497.4918,516.6261000000001],"distance_ly":[0.10453311905821627,0.10453311905821627],"eccentricity":[0.054,0.048],"host_mass_solar":[0.039,0.04],"inclination_deg":[0.2,0.3],"host_radius_solar":[0.017,0.017],"host_temperature_k":[60,60],"semi_major_axis_km":[359034.88967999996,329115.31554],"orbital_period_days":[0.00007,0.000075],"argument_of_periastron_deg":[52,58]},"host_mass_solar":0.542,"inclination_deg":89.49,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.547,"planets_in_system":2,"discovery_facility":"Transiting Exoplanet Survey Satellite (TESS)","host_spectral_type":"M1 V","host_temperature_k":3725,"orbital_period_days":15.665323,"transit_midpoint_bjd":2459324.53478,"equilibrium_temperature_k":420,"argument_of_periastron_deg":7},"designations":[{"catalog":"Exoplanet","designation":"TOI-776 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."}