{"object":{"des":"94P","spkid":"1000075","neo":false,"fullname":"94P/Russell 4","orbit_id":"82","orbit_class":{"name":"Encke-type Comet","code":"ETc"},"pha":false,"prefix":"P","kind":"cn"},"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"phys_par":[{"value":"13.4","notes":"2 parameter fit from 1178 observations, autocmod 3.0g","units":null,"name":"M1","desc":"absolute magnitude of comet and coma (i.e. total)","sigma":"0.6","ref":"82","title":"comet total magnitude"},{"notes":"autocmod 3.0g","value":"9.","desc":"comet total magnitude slope parameter","units":null,"name":"K1","ref":"82","sigma":null,"title":"comet total magnitude slope"},{"value":"20.7","notes":"[Result based on less than full coverage, so that the period may be wrong by 30 percent or so.]  REFERENCE LIST:[Kokotankekova, R.; Snodgrass, C.; Lacerda, P.; Green S.F.; et al. (2017) Mon. Not. Royal Ast. Soc. 471, 2974-3007.]","name":"rot_per","units":"h","desc":"body rotation period (synodic)","sigma":null,"ref":"LCDB (Rev. 2023-October); Warner et al., 2009","title":"rotation period"}],"orbit":{"moid_jup":"0.462","comment":null,"n_obs_used":2200,"not_valid_after":null,"cov_epoch":"2456781.5","data_arc":"27492","pe_used":"DE441","model_pars":[{"title":"non-grav. radial accel.","sigma":"3.863E-11","n":1,"units":"au/d^2","name":"A1","desc":"non-gravitational radial acceleration parameter","value":"1.354e-10","kind":"EST"},{"value":"1.496e-11","kind":"EST","n":2,"desc":"non-gravitational transverse acceleration parameter","units":"au/d^2","name":"A2","sigma":"7.907E-13","title":"non-grav. transverse accel."}],"sb_used":"SB441-N16","condition_code":"0","t_jup":"3.003","soln_date":"2026-05-06 14:49:56","epoch":"2456781.5","producer":"Shantanu Naidu","not_valid_before":null,"moid":"1.25","n_dop_obs_used":null,"rms":"0.6","two_body":null,"elements":[{"name":"e","units":null,"label":"e","title":"eccentricity","value":"0.364","sigma":"6e-08"},{"label":"a","title":"semi-major axis","name":"a","units":"au","value":"3.51","sigma":"1.5e-08"},{"title":"perihelion distance","label":"q","units":"au","name":"q","sigma":"2.1e-07","value":"2.23"},{"value":"6.18","sigma":"4.7e-06","units":"deg","name":"i","label":"i","title":"inclination; angle with respect to x-y ecliptic plane"},{"units":"deg","name":"om","label":"node","title":"longitude of the ascending node","sigma":"6.5e-05","value":"70.9"},{"units":"deg","name":"w","label":"peri","title":"argument of perihelion","value":"92.7","sigma":"6.7e-05"},{"sigma":"9e-06","value":"224","name":"ma","units":"deg","title":"mean anomaly","label":"M"},{"sigma":"6.1e-05","value":"2457689.299","name":"tp","units":"TDB","title":"time of perihelion passage","label":"tp"},{"name":"per","units":"d","title":"sidereal orbital period","label":"period","sigma":"1.6e-05","value":"2400"},{"units":"deg/d","name":"n","label":"n","title":"mean motion","sigma":"9.8e-10","value":"0.15"},{"title":"aphelion distance","label":"Q","units":"au","name":"ad","sigma":"2.1e-08","value":"4.79"}],"first_obs":"1950-05-10","equinox":"J2000","n_del_obs_used":null,"orbit_id":"82","source":"JPL","last_obs":"2025-08-16"}}
