Last updated 30-Nov-98
With a 53-day arc:
1998 SJ4 Epoch 1998 Oct. 14.0 TT = JDT 2451100.5 Williams M 321.62882 (2000.0) P Q n 0.26101418 Peri. 29.85833 +0.51262648 -0.85848641 a 2.4248971 Node 29.31003 +0.78170774 +0.45957633 e 0.2156167 Incl. 1.71714 +0.35517194 +0.22757566 P 3.78 H 15.7 G 0.15 From 24 observations 1998 Sept. 19-Nov. 11. Orbital elements from MPEC 1998-W34.
After 10-October-1998 observations:
1998 SJ4 Epoch 1998 Sept. 24.0 TT = JDT 2451080.5 Williams M 316.53679 (2000.0) P Q n 0.26076533 Peri. 29.86411 +0.51227723 -0.85869496 a 2.4264396 Node 29.32754 +0.78190383 +0.45926722 e 0.2172450 Incl. 1.71549 +0.35524420 +0.22741280 P 3.78 H 15.5 G 0.15 From 19 observations 1998 Sept. 19-Oct. 10. Orbital elements from MPEC 1998-T23.
1998 SJ4 Epoch 1998 Sept. 4.0 TT = JDT 2451060.5 Williams M 309.40998 (2000.0) P Q n 0.25983638 Peri. 31.93078 +0.49073955 -0.87118123 a 2.4322194 Node 28.68792 +0.79279832 +0.43942893 e 0.2088206 Incl. 1.76240 +0.36144918 +0.21896459 P 3.79 H 15.5 G 0.15 From 16 observations 1998 Sept. 19-27. Orbital elements from MPEC 1998-S43.
1998 SJ4 Epoch 1998 Sept. 4.0 TT = JDT 2451060.5 Williams M 313.58360 (2000.0) P Q n 0.26794701 Peri. 24.43828 +0.57338426 -0.81915803 a 2.3828870 Node 30.58115 +0.74690843 +0.51536836 e 0.2066862 Incl. 1.63461 +0.33668721 +0.25174507 P 3.68 H 16.0 G 0.15 From 10 observations 1998 Sept. 19-23. Orbital elements from MPEC 1998-S25.
1998 SJ4 Epoch 1998 Sept. 4.0 TT = JDT 2451060.5 Marsden M 315.86071 (2000.0) P Q n 0.26145743 Peri. 26.72956 +0.54070270 -0.84109236 a 2.4221557 Node 30.54511 +0.76668031 +0.48573288 e 0.2517192 Incl. 1.61136 +0.34618186 +0.23796474 P 3.77 H 16.5 G 0.15 From 8 observations 1998 Sept. 19-21. Orbital elements from MPEC 1998-S19.
Elements courtesy of the
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