{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.815","julian_year":2026.815,"time":"2026-10-25T19:37:25.117Z","years_from_j2000":26.815,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued position is carried along the great circle the object's own published motion puts it on, at a constant velocity, from the epoch that position was measured at, 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. The motion runs from position_epoch_jyear where the upstream publishes one — a timed pulsar's position belongs to the year it was timed — and from J2000 where it does not. 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-58946","name":"62 ρ Gem","class":"f1v_yellow_white_main_sequence_star","category":"star","object_type":"F1V yellow-white main-sequence star","mag":4.16,"mag_band":"V","abs_mag":2.878,"abs_mag_band":"V","distance_ly":58.862419955673836,"distance_method":"parallax","ra_deg":112.277925,"dec_deg":31.78455,"epoch_ra_deg":112.711261,"epoch_dec_deg":31.730571,"epoch_moved_arcsec":6.728,"pm_ra_mas_yr":159.33,"pm_dec_mas_yr":193.82,"position_epoch_jyear":null,"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-58946","source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0","attribution":"HYG Database v4.1, Astronexus (github.com/astronexus/HYG-Database). Fields derived from it stay under CC BY-SA 4.0.","commercial_use":"allowed"},"radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"07291+3147","companions":[{"measured":2006,"magnitude":12.5,"components":"AB","discoverer_code":"A  2124","separation_arcsec":1.2,"position_angle_deg":272},{"measured":2001,"magnitude":11.59,"components":"AC","discoverer_code":"A  2124","separation_arcsec":221.6,"position_angle_deg":285},{"measured":2001,"magnitude":7.82,"components":"AE","discoverer_code":"ALC   3","separation_arcsec":755.4,"position_angle_deg":355}],"spectral_type":"F1V","color_index_bv":0.32,"luminosity_solar":6.148936385126262,"radial_velocity_km_s":3.1,"spectral_type_source":"SIMBAD (2003AJ....126.2048G, quality C)","surface_temperature_k":6917,"proper_motion_ra_mas_yr":159.33,"proper_motion_dec_mas_yr":193.82,"stellar_parameters_method":"Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016)"},"designations":[{"catalog":"Bayer/Flamsteed","designation":"62 Rho Gem"},{"catalog":"Gliese","designation":"Gl 274A"},{"catalog":"HD","designation":"HD 58946"},{"catalog":"HIP","designation":"HIP 36366"},{"catalog":"HR","designation":"HR 2852"}],"updated_at":"2026-10-01T09:42:28.932Z","citation":{"plain":"SpaceCatalog. 62 ρ Gem [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-58946","bibtex":"@misc{spacecatalog_hd-58946,\n  author       = {{SpaceCatalog}},\n  title        = {{62 ρ Gem}},\n  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},\n  year         = {2026},\n  url          = {https://spacecatalog.org/object/hd-58946},\n  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from HYG Database v4.1.}\n}","url":"https://spacecatalog.org/object/hd-58946","release":"DR1","doi":null},"references":[{"bibcode":"2003AJ....126.2048G","ads_url":"https://ui.adsabs.harvard.edu/abs/2003AJ....126.2048G/abstract","quantity":"properties.spectral_type_source"}],"attribution":"Data from SpaceCatalog.org. Each record names its upstream in `source`, with that producer's terms in `source.license`, the acknowledgement it asks for in `source.attribution`, and whether its terms allow commercial use in `source.commercial_use`; those terms govern the record, and citing SpaceCatalog does not discharge them."}