{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.857","julian_year":2026.857,"time":"2026-11-10T01:21:55.626Z","years_from_j2000":26.857,"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-125335","name":"HD 125335","class":"ka6ha9mf5_iii_ba_white_giant","category":"star","object_type":"kA6hA9mF5(III)Ba white giant","mag":7.21,"mag_band":"V","abs_mag":2.234,"abs_mag_band":"V","distance_ly":322.5399008112838,"distance_method":"parallax (Gaia DR3, zero point corrected)","ra_deg":214.64875261092092,"dec_deg":10.510495,"epoch_ra_deg":214.978915,"epoch_dec_deg":10.385806,"epoch_moved_arcsec":1.553,"pm_ra_mas_yr":-57.6,"pm_dec_mas_yr":-4.9,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Boötes","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-125335","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":1256759300,"mass_solar":1.664,"radius_solar":2.048,"spectral_type":"kA6hA9mF5(III)Ba","uncertainties":{"distance_ly":[1.2962760929108197,1.3067798943410676]},"color_index_bv":0.318,"luminosity_solar":11.125387479407012,"radial_velocity_km_s":-29,"spectral_type_source":"SIMBAD (2020AJ....160...52M, quality D)","surface_gravity_log_g":4.008,"surface_temperature_k":7234,"proper_motion_ra_mas_yr":-57.6,"proper_motion_dec_mas_yr":-4.9,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":10.3554},"designations":[{"catalog":"HD","designation":"HD 125335"},{"catalog":"HIP","designation":"HIP 69923"}],"updated_at":"2026-11-04T19:31:31.075Z","citation":{"plain":"SpaceCatalog. HD 125335 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-125335","bibtex":"@misc{spacecatalog_hd-125335,\n  author       = {{SpaceCatalog}},\n  title        = {{HD 125335}},\n  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},\n  year         = {2026},\n  url          = {https://spacecatalog.org/object/hd-125335},\n  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from HYG Database v4.1.}\n}","url":"https://spacecatalog.org/object/hd-125335","release":"DR1","doi":null},"references":[{"bibcode":"2020AJ....160...52M","ads_url":"https://ui.adsabs.harvard.edu/abs/2020AJ....160...52M/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."}