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
2022-02-06 08:31:13 C 10 21 54.46 +07 02 21.8 V G96
2022-02-06 08:39:23 C 10 21 54.13 +07 02 24.4 V G96
2022-02-08 09:05:55 C 10 20 00.549 +07 17 01.14 U F52
2022-02-08 09:21:35 C 10 19 59.915 +07 17 06.03 U F52
2022-02-08 09:37:14 C 10 19 59.268 +07 17 10.88 U F52
2022-02-08 09:52:49 C 10 19 58.638 +07 17 15.58 U F52
2022-02-09 09:08:50 C 10 19 02.664 +07 24 27.23 U F52
2022-02-09 09:25:19 C 10 19 01.971 +07 24 32.36 U F52
2022-02-09 09:41:54 C 10 19 01.282 +07 24 37.51 U F52
2022-02-09 09:58:19 C 10 19 00.601 +07 24 42.62 U F52
2022-02-21 06:16:04 C 10 06 45.95 +08 59 21.7 V G96
2022-02-21 06:23:27 C 10 06 45.57 +08 59 24.6 V G96
2022-02-21 06:30:52 C 10 06 45.26 +08 59 27.3 V G96
2022-02-21 06:38:15 C 10 06 44.95 +08 59 29.7 V G96
2022-02-25 08:07:39 C 10 02 23.171 +09 33 32.34 U F52
2022-02-25 08:26:00 C 10 02 22.333 +09 33 39.00 U F52
2022-02-25 08:44:26 C 10 02 21.483 +09 33 45.38 U F52
2022-02-25 09:03:26 C 10 02 20.623 +09 33 52.05 U F52
2022-03-01 05:37:08 C 09 58 14.17 +10 06 08.0 V G96
2022-03-01 05:44:34 C 09 58 13.84 +10 06 10.4 V G96
2022-03-01 05:52:00 C 09 58 13.45 +10 06 13.0 V G96
2022-03-01 05:59:25 C 09 58 13.13 +10 06 15.4 V G96
2022-03-21 05:51:40 C 09 39 57.711 +12 37 09.92 U F52
2022-03-21 06:09:08 C 09 39 57.185 +12 37 14.27 U F52
2022-03-21 06:26:28 C 09 39 56.632 +12 37 19.12 U F52
2022-03-21 06:43:53 C 09 39 56.116 +12 37 23.77 U F52
2023-08-18 14:31:28 C 04 39 38.316 +15 07 06.37 X F52
2023-08-18 14:38:53 C 04 39 38.762 +15 07 06.10 X F52
2023-08-18 14:46:14 C 04 39 39.216 +15 07 05.78 X F52
2023-08-18 14:53:37 C 04 39 39.663 +15 07 05.61 X F52
2023-11-16 09:31:24 C 05 00 18.984 +09 03 29.06 X F52
2023-11-16 09:50:05 C 05 00 18.055 +09 03 26.39 X F52
2023-11-16 10:27:30 C 05 00 16.199 +09 03 20.37 X F52
2023-12-06 10:32:20 C 04 35 26.056 +08 11 19.35 X F51
2023-12-06 10:51:41 C 04 35 25.039 +08 11 18.35 X F51
2023-12-06 11:08:51 C 04 35 24.142 +08 11 17.43 X F51
2024-01-01 06:30:09 C 04 10 38.094 +08 33 14.23 X F52
2024-01-01 06:47:04 C 04 10 37.635 +08 33 16.08 X F52
2024-01-01 07:03:57 C 04 10 37.191 +08 33 18.01 X F52
2024-12-30 10:22:53 C 09 56 47.810 +07 02 09.53 V V00
2024-12-30 10:30:59 C 09 56 47.692 +07 02 10.21 V V00
2024-12-30 10:39:03 C 09 56 47.569 +07 02 10.72 V V00
2024-12-30 10:47:08 C 09 56 47.447 +07 02 11.47 V V00
2025-01-24 09:32:47 C 09 40 46.197 +08 36 14.70 X F52
2025-01-24 10:07:57 C 09 40 44.720 +08 36 23.01 X F52
2025-01-24 10:25:28 C 09 40 44.024 +08 36 27.18 X F52
2025-02-18 07:27:21 C 09 15 07.765 +11 23 27.46 V G96
2025-02-18 07:34:45 C 09 15 07.506 +11 23 29.72 V G96
2025-02-18 07:42:09 C 09 15 07.121 +11 23 31.78 V G96
2025-02-18 07:49:34 C 09 15 06.718 +11 23 34.51 V G96