{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.681","julian_year":2026.681,"time":"2026-09-06T16:14:10.955Z","years_from_j2000":26.681,"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":"hats-7-b","name":"HATS-7 b","class":"gas_giant","category":"exoplanet","object_type":"Gas giant","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":785.0812321106415,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":208.8567465,"dec_deg":-21.2078587,"epoch_ra_deg":209.228451,"epoch_dec_deg":-21.339728,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"HATS-7","semi_major_axis_km":6001866.572484,"periapsis_km":null,"mass_kg":2.277760936104161e+26,"mass_msun":0.000114552,"constellation":"Virgo","discovered":"2015","featured":false,"url":"https://spacecatalog.org/object/hats-7-b","radius_km":40250.0651927,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"HATS-7","host_v_mag":13.347,"uncertainties":{"mass_kg":[2.277760936104161e+25,2.277760936104161e+25],"radius_km":[2430.7321786,3288.6376534],"distance_ly":[5.309825829228583,5.378318668549099],"host_mass_solar":[0.027,0.027],"inclination_deg":[0.75,0.75],"host_radius_solar":[0.035,0.049],"host_temperature_k":[50,50],"semi_major_axis_km":[64327.08440099999,64327.08440099999],"orbital_period_days":[0.0000054,0.0000054]},"host_mass_solar":0.849,"inclination_deg":87.92,"stars_in_system":1,"discovery_method":"Transit","host_radius_solar":0.815,"planets_in_system":1,"discovery_facility":"HATSouth","host_spectral_type":"K2","host_temperature_k":4985,"orbital_period_days":3.185315,"transit_midpoint_bjd":2456528.29697,"eccentricity_upper_limit":0.17,"equilibrium_temperature_k":1084},"designations":[{"catalog":"Exoplanet","designation":"HATS-7 b"},{"catalog":"Host star","designation":"HATS-7"}],"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."}