{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.678","julian_year":2026.678,"time":"2026-09-05T18:49:06.966Z","years_from_j2000":26.678,"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-69830-b","name":"HD 69830 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":40.962305633823526,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":124.6010091,"dec_deg":-12.6364246,"epoch_ra_deg":124.917246,"epoch_dec_deg":-12.719802,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HD 69830","semi_major_axis_km":11743432.849949999,"periapsis_km":null,"mass_kg":6.091611225147206e+25,"mass_msun":0.0000306356,"constellation":"Puppis","discovered":"2006","featured":false,"url":"https://spacecatalog.org/object/hd-69830-b","radius_km":20218.577,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HD 69830","host_v_mag":5.96004,"eccentricity":0.1,"uncertainties":{"distance_ly":[0.03131101226080737,0.031637168638524116],"eccentricity":[0.04,0.04],"host_mass_solar":[0.03,0.03],"host_radius_solar":[0.019437,0.019437],"host_temperature_k":[20,20],"orbital_period_days":[0.003,0.003],"argument_of_periastron_deg":[26,26]},"host_mass_solar":0.86,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.886947,"planets_in_system":3,"discovery_facility":"La Silla Observatory","host_spectral_type":"K0V","host_temperature_k":5385,"orbital_period_days":8.667,"periastron_epoch_bjd":2453496.8,"transit_midpoint_bjd":2455995.87,"equilibrium_temperature_k":872.84,"argument_of_periastron_deg":340},"designations":[{"catalog":"Exoplanet","designation":"HD 69830 b"}],"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."}