{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.853","julian_year":2026.853,"time":"2026-11-08T12:49:31.398Z","years_from_j2000":26.853,"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-110834","name":"HD 110834","class":"f6ivn_yellow_white_subgiant","category":"star","object_type":"F6IVn yellow-white subgiant","mag":6.34,"mag_band":"V","abs_mag":1.366,"abs_mag_band":"V","distance_ly":322.2823615481229,"distance_method":"parallax (Gaia DR3, zero point corrected)","ra_deg":191.11291606879152,"dec_deg":44.103004,"epoch_ra_deg":191.432238,"epoch_dec_deg":43.955153,"epoch_moved_arcsec":0.818,"pm_ra_mas_yr":-30.32,"pm_dec_mas_yr":2.91,"position_epoch_jyear":null,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Canes Venatici","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hd-110834","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":1088800500,"mass_solar":2.009,"radius_solar":3.921,"spectral_type":"F6IVn","uncertainties":{"distance_ly":[0.7279023356714306,0.7312053154212074]},"color_index_bv":0.469,"luminosity_solar":24.752628524398617,"radial_velocity_km_s":-16,"spectral_type_source":"SIMBAD (2020AJ....160...52M, quality C)","surface_gravity_log_g":3.426,"surface_temperature_k":6461,"proper_motion_ra_mas_yr":-30.32,"proper_motion_dec_mas_yr":2.91,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":24.1503},"designations":[{"catalog":"HD","designation":"HD 110834"},{"catalog":"HIP","designation":"HIP 62172"},{"catalog":"HR","designation":"HR 4843"}],"updated_at":"2026-11-04T19:31:31.075Z","citation":{"plain":"SpaceCatalog. HD 110834 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-110834","bibtex":"@misc{spacecatalog_hd-110834,\n  author       = {{SpaceCatalog}},\n  title        = {{HD 110834}},\n  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},\n  year         = {2026},\n  url          = {https://spacecatalog.org/object/hd-110834},\n  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from HYG Database v4.1.}\n}","url":"https://spacecatalog.org/object/hd-110834","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."}