{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.826","julian_year":2026.826,"time":"2026-10-29T15:44:10.973Z","years_from_j2000":26.826,"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-1185","name":"HD 1185","class":"a2vpsi_white_main_sequence_star","category":"star","object_type":"A2VpSi white main-sequence star","mag":6.12,"mag_band":"V","abs_mag":0.983,"abs_mag_band":"V","distance_ly":347.34447448235625,"distance_method":"parallax","ra_deg":4.089675000000001,"dec_deg":43.595049,"epoch_ra_deg":4.444412,"epoch_dec_deg":43.744834,"epoch_moved_arcsec":1.143,"pm_ra_mas_yr":35.61,"pm_dec_mas_yr":-23.43,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Andromeda","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-1185","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":"00164+4336","age_years":310828300,"companions":[{"measured":2024,"magnitude":9.83,"components":"AB","discoverer_code":"HJ 1947","separation_arcsec":8.6,"position_angle_deg":76},{"measured":2015,"magnitude":11.35,"components":"AC","discoverer_code":"WAL   5","separation_arcsec":76.4,"position_angle_deg":14},{"measured":2015,"magnitude":11.35,"components":"AD","discoverer_code":"WAL   5","separation_arcsec":99.5,"position_angle_deg":43},{"measured":2015,"magnitude":17,"components":"AE","discoverer_code":"WAL   5","separation_arcsec":114.7,"position_angle_deg":44}],"mass_solar":2.361,"radius_solar":2.13,"spectral_type":"A2VpSi","color_index_bv":0.068,"luminosity_solar":35.22086356184676,"radial_velocity_km_s":2,"spectral_type_source":"SIMBAD (1981ApJS...45..437A, quality C)","surface_gravity_log_g":4.016,"surface_temperature_k":9853,"proper_motion_ra_mas_yr":35.61,"proper_motion_dec_mas_yr":-23.43,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: above 7,500 K GSP-Phot's temperature and extinction are degenerate","bolometric_luminosity_solar":38.4409},"designations":[{"catalog":"HD","designation":"HD 1185"},{"catalog":"HIP","designation":"HIP 1302"},{"catalog":"HR","designation":"HR 56"}],"updated_at":"2026-10-01T09:42:28.932Z","citation":{"plain":"SpaceCatalog. HD 1185 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-1185","bibtex":"@misc{spacecatalog_hd-1185,\n  author       = {{SpaceCatalog}},\n  title        = {{HD 1185}},\n  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},\n  year         = {2026},\n  url          = {https://spacecatalog.org/object/hd-1185},\n  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from HYG Database v4.1.}\n}","url":"https://spacecatalog.org/object/hd-1185","release":"DR1","doi":null},"references":[{"bibcode":"1981ApJS...45..437A","ads_url":"https://ui.adsabs.harvard.edu/abs/1981ApJS...45..437A/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."}