{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.811","julian_year":2026.811,"time":"2026-10-24T07:12:13.370Z","years_from_j2000":26.811,"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":"hip-57712","name":"HIP 57712","class":"k0_orange_star","category":"star","object_type":"K0 orange star","mag":8.87,"mag_band":"V","abs_mag":2.728,"abs_mag_band":"V","distance_ly":551.8719204464826,"distance_method":"parallax","ra_deg":177.53324999999998,"dec_deg":-11.045208,"epoch_ra_deg":177.877083,"epoch_dec_deg":-11.19486,"epoch_moved_arcsec":1.016,"pm_ra_mas_yr":-10.47,"pm_dec_mas_yr":36.43,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Crater","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-57712","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":{"age_years":783774730,"mass_solar":2.303,"radius_solar":6.541,"spectral_type":"K0","color_index_bv":0.93,"luminosity_solar":7.059923578936672,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (quality D)","surface_gravity_log_g":2.761,"surface_temperature_k":4958,"proper_motion_ra_mas_yr":-10.47,"proper_motion_dec_mas_yr":36.43,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":24.8029},"designations":[{"catalog":"HIP","designation":"HIP 57712"}],"updated_at":"2026-10-01T09:42:28.932Z","citation":{"plain":"SpaceCatalog. HIP 57712 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hip-57712","bibtex":"@misc{spacecatalog_hip-57712,\n  author       = {{SpaceCatalog}},\n  title        = {{HIP 57712}},\n  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},\n  year         = {2026},\n  url          = {https://spacecatalog.org/object/hip-57712},\n  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from HYG Database v4.1.}\n}","url":"https://spacecatalog.org/object/hip-57712","release":"DR1","doi":null},"references":[],"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."}