After our second opposition recovery (astrometry on Feb 14 and 22 UT, 1999):
1998 AA Epoch 1999 Jan. 22.0 TT = JDT 2451200.5 Williams M 185.16390 (2000.0) P Q n 0.26908775 Peri. 85.30195 +0.80606614 +0.46511295 a 2.3761477 Node 246.57616 -0.56040471 +0.79865533 e 0.2451355 Incl. 23.50497 +0.19027333 +0.38186334 P 3.66 H 13.3 G 0.15 U 4 From 48 observations at 2 oppositions, 1997-1999, mean residual 0".64. Orbital elements from MPEC 1999-D15.
After last of our 1998 observations:
1998 AA Epoch 1999 Jan. 22.0 TT = JDT 2451200.5 Williams M 185.12567 (2000.0) P Q n 0.26905315 Peri. 85.30542 +0.80608431 +0.46505139 a 2.3763514 Node 246.57690 -0.56035616 +0.79869402 e 0.2453032 Incl. 23.50743 +0.19033934 +0.38185738 P 3.66 H 13.5 G 0.15 U 5 From 42 observations 1997 Nov. 29-1998 Feb. 18, mean residual 0".65. Orbital elements from MPC 31425.
After my three observations on Jan. 16 1998 (UT):
Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Williams M 77.66404 (2000.0) P Q n 0.26942556 Peri. 85.24406 +0.80578338 +0.46580962 a 2.3741611 Node 246.58444 -0.56103007 +0.79815671 e 0.2445327 Incl. 23.48547 +0.18962703 +0.38205663 P 3.66 H 13.5 G 0.15 From 35 observations 1997 Nov. 29-1998 Jan. 16. Orbital elements from E1998-B10.
1998 AA Epoch 1997 Nov. 28.0 TT = JDT 2450780.5 Williams M 72.46537 (2000.0) P Q n 0.27015419 Peri. 85.33890 +0.80695425 +0.46489689 a 2.3698903 Node 246.56023 -0.55966788 +0.79893289 e 0.2422336 Incl. 23.39316 +0.18867087 +0.38154569 P 3.65 H 13.5 G 0.15 From 29 observations 1997 Nov. 29-1998 Jan. 2. Orbital elements from E1998-A07.
Elements courtesy of the
MPC .
