{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.670","julian_year":2026.67,"time":"2026-09-02T20:35:36.628Z","years_from_j2000":26.67,"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-62898","name":"80 π Gem","class":"m0iii_red_giant","category":"star","object_type":"M0III red giant","mag":5.14,"mag_band":"V","abs_mag":-1.396,"abs_mag_band":"V","distance_ly":661.574944247887,"distance_method":"parallax","ra_deg":116.87635499999999,"dec_deg":33.415697,"epoch_ra_deg":117.308592,"epoch_dec_deg":33.349457,"epoch_moved_arcsec":0.914,"pm_ra_mas_yr":-18.81,"pm_dec_mas_yr":-28.63,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Gemini","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-62898","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"07475+3325","companions":[{"measured":2017,"magnitude":11.4,"components":"AB","discoverer_code":"STF1135","separation_arcsec":19,"position_angle_deg":215},{"measured":2016,"magnitude":11.18,"components":"AC","discoverer_code":"STF1135","separation_arcsec":91.6,"position_angle_deg":343}],"spectral_type":"M0III","color_index_bv":1.635,"luminosity_solar":315.06488329723953,"radial_velocity_km_s":-12,"spectral_type_source":"SIMBAD (quality D)","proper_motion_ra_mas_yr":-18.81,"proper_motion_dec_mas_yr":-28.63},"designations":[{"catalog":"Bayer/Flamsteed","designation":"80 Pi Gem"},{"catalog":"HD","designation":"HD 62898"},{"catalog":"HIP","designation":"HIP 38016"},{"catalog":"HR","designation":"HR 3013"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"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."}