161998 (1988 PA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4062657190 ± 2.17e-08
Semi-major axis (a)2.1466330354 AU ± 4.14e-09
Inclination (i)8.22733029° ± 2.41e-06
Long. of Asc. Node (Ω)162.05534372° ± 1.55e-05
Arg. of Perihelion (ω)137.63522651° ± 1.62e-05
Mean Anomaly (M)312.21358507° ± 6.34e-06
Mean Motion (n)0.3133830935°/day ± 9.06e-10
Perihelion dist (q)1.27452962 AU ± 4.67e-08
Aphelion dist (Q)3.01873645 AU ± 4.70e-08
Orbital Period3.14511633 yr ± 9.09e-09
Physical Parameters
H (abs. magnitude)17.59
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.316″
Uncertainty0
Orbit TypeAmor
MOID0.276951 AU
Observations Used483
Oppositions25
Arc Total1988-2025
First Observation Used1988-05-22
Last Observation Used2025-03-03
Observations (503)
Date Type RA Dec Mag Band Observatory
2007-11-11 05:18:19 C 01 39 59.52 -03 43 54.3 c 711
2007-11-11 05:32:27 C 01 39 59.19 -03 43 54.8 c 711
2007-11-11 05:46:33 C 01 39 58.76 -03 43 55.3 c 711
2007-11-17 05:10:48 C 01 37 04.94 -03 43 08.6 r 703
2007-11-17 05:26:12 C 01 37 04.58 -03 43 07.3 r 703
2007-11-17 05:41:35 C 01 37 04.33 -03 43 08.1 r 703
2007-11-17 05:57:02 C 01 37 03.93 -03 43 06.0 r 703
2010-04-06 10:08:29 C 16 55 38.23 -09 04 11.5 o H21
2010-04-06 10:12:39 C 16 55 38.52 -09 04 10.9 o H21
2010-04-15 11:29:46 C 17 09 17.53 -07 27 35.2 r G96
2010-04-15 11:36:30 C 17 09 17.96 -07 27 31.3 r G96
2010-04-15 11:43:16 C 17 09 18.32 -07 27 28.5 r G96
2010-04-15 11:50:02 C 17 09 18.72 -07 27 25.4 r G96
2010-05-07 09:58:41 C 17 36 49.03 -02 17 06.9 r 703
2010-05-07 10:08:42 C 17 36 49.39 -02 17 00.7 r 703
2010-05-07 10:18:46 C 17 36 49.75 -02 16 54.5 r 703
2010-05-07 10:27:46 C 17 36 50.12 -02 16 48.1 u 448
2010-05-07 10:28:48 C 17 36 50.18 -02 16 47.4 r 703
2010-05-07 10:34:08 C 17 36 50.37 -02 16 43.9 u 448
2010-05-07 10:38:47 C 17 36 50.58 -02 16 40.6 r 703
2010-05-07 10:40:28 C 17 36 50.60 -02 16 39.4 u 448
2010-05-25 07:43:55 C 17 51 52.80 +02 40 04.7 u 448
2010-05-25 07:48:39 C 17 51 52.89 +02 40 07.9 u 448
2010-05-25 07:53:24 C 17 51 53.00 +02 40 11.1 u 448
2010-05-25 07:58:40 C 17 51 53.11 +02 40 14.7 u 448
2010-05-25 08:04:28 C 17 51 53.25 +02 40 18.6 u 448
2010-06-03 10:23:10 C 17 56 54.79 +04 59 31.0 u 448
2010-06-03 10:30:00 C 17 56 54.92 +04 59 35.1 u 448
2010-06-03 10:35:48 C 17 56 55.00 +04 59 38.4 u 448
2010-06-06 13:16:26 C 17 58 17.329 +05 41 42.85 L F51
2010-06-06 13:34:23 C 17 58 17.558 +05 41 52.13 L F51
2010-06-09 06:34:58 C 17 59 23.03 +06 15 03.2 16.5 c 704
2010-06-09 06:51:55 C 17 59 23.24 +06 15 10.9 17.0 c 704
2010-06-09 07:07:17 C 17 59 23.36 +06 15 19.5 16.9 c 704
2010-06-09 07:22:38 C 17 59 23.53 +06 15 26.3 16.9 c 704
2010-06-09 07:37:55 C 17 59 23.71 +06 15 34.0 17.1 c 704
2010-06-12 03:46:44 C 18 00 25.22 +06 46 27.6 o I15
2010-06-12 04:01:18 C 18 00 25.36 +06 46 33.9 o I15
2010-06-12 04:17:58 C 18 00 25.52 +06 46 40.9 o I15
2010-06-12 07:31:37 C 18 00 28.04 +06 48 05.5 u 448
2010-06-12 07:34:50 C 18 00 28.07 +06 48 06.8 u 448
2010-06-12 07:38:03 C 18 00 28.10 +06 48 08.2 u 448
2010-06-12 07:41:17 C 18 00 28.13 +06 48 09.6 u 448
2010-06-12 07:44:31 C 18 00 28.16 +06 48 11.0 u 448
2010-06-14 06:22:52 C 18 01 07.62 +07 06 36.2 u 448
2010-06-14 06:26:02 C 18 01 07.65 +07 06 37.4 u 448
2010-06-14 06:30:48 C 18 01 07.69 +07 06 39.2 u 448
2010-06-14 06:34:28 C 18 01 07.71 +07 06 40.6 u 448
2010-06-16 22:06:01 C 18 01 58.81 +07 27 57.8 r B09
2010-06-16 22:12:06 C 18 01 58.92 +07 27 59.8 r B09