{"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":"2026-09-07T04:46:43.444Z","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":"gj-1061-b","name":"GJ 1061 b","class":"terrestrial_planet","category":"exoplanet","object_type":"Terrestrial planet","mag":null,"mag_band":null,"abs_mag":null,"abs_mag_band":null,"distance_ly":11.979006209505009,"distance_method":"NASA Exoplanet Archive sy_dist (TICv8, 2019AJ....158..138S)","ra_deg":54.0032486,"dec_deg":-44.5143104,"epoch_ra_deg":54.22985,"epoch_dec_deg":-44.424778,"epoch_moved_arcsec":null,"pm_ra_mas_yr":null,"pm_dec_mas_yr":null,"orbits":"GJ 1061","semi_major_axis_km":3141555.2846999997,"periapsis_km":null,"mass_kg":6.629106333248432e+24,"mass_msun":0.00000333387,"constellation":"Horologium","discovered":"2020","featured":false,"url":"https://spacecatalog.org/object/gj-1061-b","radius_km":6633.224,"radius_kind":null,"data_quality":null,"description":null,"properties":{"host_star":"GJ 1061","host_v_mag":12.7,"eccentricity":0.05,"uncertainties":{"mass_kg":[5.374951081012241e+23,6.569384654570517e+23],"distance_ly":[0.0029354073994506905,0.0029027917616790164],"eccentricity":[0.03,0.5],"host_mass_solar":[0.01,0.01],"inclination_deg":[13,9],"host_radius_solar":[0.005,0.005],"host_temperature_k":[98,98],"semi_major_axis_km":[89758.72241999999,89758.72241999999],"orbital_period_days":[0.0003,0.0002],"argument_of_periastron_deg":[65,81]},"host_mass_solar":0.12,"inclination_deg":77,"stars_in_system":1,"discovery_method":"Radial Velocity","host_radius_solar":0.156,"planets_in_system":3,"discovery_facility":"La Silla Observatory","host_spectral_type":"M5.5 V","host_temperature_k":2953,"orbital_period_days":3.2073,"periastron_epoch_bjd":2458300.61,"equilibrium_temperature_k":388.11,"argument_of_periastron_deg":145},"designations":[{"catalog":"Exoplanet","designation":"GJ 1061 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."}