http://www.aerith.net/comet/catalog/2019Y4/2019Y4.html         JPL/HORIZONS ATLAS (C/2019 Y4) 2020-Mar-18 21:59:13 Rec #:90004446 (+COV) Soln.date: 2020-Mar-09_07:19:55 # obs: 586 (2019-2020) IAU76/J2000 helio. ecliptic osc. elements (au, days, deg., period=Julian yrs): EPOCH= 2458884.5 ! 2020-Feb-05.0000000 (TDB) RMSW= n.a. EC= .9992446427560784 QR= .2528511246809229 TP= 2459000.515108983 OM= 120.569994312319 W= 177.4078594843987 IN= 45.38173634030989 A= 334.7437609364624 MA= 359.98132976049 ADIST= 669.2346707482438 PER= 6124.5890168075 N= .000160929 ANGMOM= .012230574 DAN= 284.34694 DDN= .25298 L= 298.7486958 B= 1.8447771 MOID= .63108897 TP= 2020-May-31.0151089830 Comet physical (GM= km^3/s^2; RAD= km): GM= n.a. RAD= n.a. M1= 7.7 M2= 13.9 k1= 21.5 k2= 5. PHCOF= .030 COMET comments 1: soln ref.= JPL#4, data arc: 2019-12-28 to 2020-03-05 2: k1=21.5, k2=5., phase coef.=0.03;