{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.654","julian_year":2026.654,"time":"2026-08-27T20:23:21.942Z","years_from_j2000":26.654,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, 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. 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-107294","name":"HIP 107294","class":"f6_yellow_white_star","category":"star","object_type":"F6 yellow-white star","mag":10.05,"mag_band":"V","abs_mag":4.828,"abs_mag_band":"V","distance_ly":361.192095811076,"distance_method":"parallax","ra_deg":325.988085,"dec_deg":27.389999,"epoch_ra_deg":326.285784,"epoch_dec_deg":27.511621,"epoch_moved_arcsec":7.656,"pm_ra_mas_yr":-238.75,"pm_dec_mas_yr":-159.67,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Pegasus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-107294","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"21435+2721","age_years":3538640000,"companions":[{"measured":2016,"magnitude":17.1,"components":"DG","discoverer_code":"OSO 155","separation_arcsec":6.1,"position_angle_deg":304},{"measured":2015,"magnitude":11.08,"components":"DF","discoverer_code":"A   299","separation_arcsec":145.8,"position_angle_deg":26}],"mass_solar":1.081,"radius_solar":1.116,"spectral_type":"F6","color_index_bv":0.48,"luminosity_solar":1.0204694319421985,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1985ApJS...59..197B, quality D)","surface_gravity_log_g":4.307,"surface_temperature_k":6011,"proper_motion_ra_mas_yr":-238.75,"proper_motion_dec_mas_yr":-159.67,"stellar_parameters_method":"Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4)","bolometric_luminosity_solar":1.4623},"designations":[{"catalog":"HIP","designation":"HIP 107294"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-08-27T19:16:43.430Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}