2021 PD9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4903739156 ± 7.66e-06
Semi-major axis (a)2.3582502324 AU ± 4.14e-05
Inclination (i)1.86834757° ± 2.05e-05
Long. of Asc. Node (Ω)196.34869294° ± 3.03e-05
Arg. of Perihelion (ω)185.10355939° ± 7.53e-05
Mean Anomaly (M)48.24131866° ± 1.07e-02
Mean Motion (n)0.2721619747°/day ± 7.17e-06
Perihelion dist (q)1.20182583 AU ± 2.78e-05
Aphelion dist (Q)3.51467463 AU ± 6.43e-05
Orbital Period3.62146947 yr ± 9.53e-05
Physical Parameters
H (abs. magnitude)22.15
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.157″
Uncertainty2
Orbit TypeAmor
MOID0.202594 AU
Observations Used141
Oppositions1
Arc Total2021-2021
First Observation Used2021-08-06
Last Observation Used2021-11-30
Observations (153)
Date Type RA Dec Mag Band Observatory
2021-08-06 11:52:13 C 23 32 15.464 +01 43 07.97 V F51
2021-08-06 12:11:09 C 23 32 16.764 +01 43 17.84 V F51
2021-08-06 12:30:03 C 23 32 18.048 +01 43 27.55 V F51
2021-08-06 12:49:05 C 23 32 19.366 +01 43 37.21 V F51
2021-08-08 11:00:38 C 23 35 45.351 +02 07 21.24 U F51
2021-08-08 11:19:02 C 23 35 46.627 +02 07 30.87 U F51
2021-08-08 11:37:40 C 23 35 47.916 +02 07 40.53 U F51
2021-08-10 12:27:11 C 23 39 27.075 +02 32 42.56 V 568
2021-08-10 12:28:56 C 23 39 27.190 +02 32 43.50 V 568
2021-08-10 12:30:40 C 23 39 27.316 +02 32 44.35 V 568
2021-08-10 12:32:24 C 23 39 27.443 +02 32 45.29 V 568
2021-08-13 11:31:43 C 23 44 51.593 +03 09 00.21 V F51
2021-08-13 11:50:11 C 23 44 52.930 +03 09 09.75 V F51
2021-08-13 12:27:13 C 23 44 55.558 +03 09 28.60 V F51
2021-08-17 11:42:00 C 23 52 20.853 +03 57 46.27 U F51
2021-08-17 11:50:49 C 23 52 21.512 +03 57 50.62 U F51
2021-08-17 11:59:35 C 23 52 22.142 +03 57 55.28 U F51
2021-08-29 12:57:49 C 00 16 24.919 +06 20 00.71 U F51
2021-08-29 13:15:55 C 00 16 26.382 +06 20 09.33 U F51
2021-08-29 13:52:03 C 00 16 29.282 +06 20 26.24 U F51
2021-09-04 11:10:22 C 00 29 14.321 +07 25 08.76 U F51
2021-09-04 11:27:26 C 00 29 15.754 +07 25 16.32 U F51
2021-09-04 11:44:27 C 00 29 17.191 +07 25 23.76 U F51
2021-09-05 09:16:29 C 00 31 18.296 +07 34 49.22 U F52
2021-09-05 09:32:11 C 00 31 19.651 +07 34 56.24 U F52
2021-09-05 10:03:42 C 00 31 22.372 +07 35 10.15 U F52
2021-09-09 07:41:27 C 00 40 14.98 +08 14 32.7 V G96
2021-09-09 07:49:33 C 00 40 15.69 +08 14 35.9 V G96
2021-09-09 07:57:40 C 00 40 16.40 +08 14 39.3 V G96
2021-09-09 08:05:46 C 00 40 17.12 +08 14 42.6 V G96
2021-09-28 09:11:48 C 01 27 22.060 +10 40 35.17 U F52
2021-09-28 09:28:15 C 01 27 23.651 +10 40 38.91 U F52
2021-09-28 09:44:45 C 01 27 25.239 +10 40 42.71 U F52
2021-09-28 10:01:14 C 01 27 26.826 +10 40 46.45 U F52
2021-09-29 07:11:19 C 01 29 41.63 +10 44 59.5 V U68
2021-09-29 07:16:57 C 01 29 42.22 +10 45 01.6 V U68
2021-09-29 07:45:46 C 01 29 44.98 +10 45 07.5 V U68
2021-09-29 07:51:23 C 01 29 45.56 +10 45 07.7 V U68
2021-09-29 18:40:10 C 01 30 52.78 +10 47 20.8 V D29
2021-09-29 19:00:32 C 01 30 54.73 +10 47 24.4 V D29
2021-09-29 19:20:53 C 01 30 56.71 +10 47 28.2 V D29
2021-10-01 09:27:26 C 01 34 58.94 +10 54 36.0 V 703
2021-10-01 09:35:08 C 01 34 59.67 +10 54 38.1 V 703
2021-10-01 09:42:49 C 01 35 00.41 +10 54 39.6 V 703
2021-10-03 06:44:59 C 01 39 45.66 +11 02 06.5 V 703
2021-10-03 07:00:11 C 01 39 47.15 +11 02 07.9 V 703
2021-10-03 07:07:47 C 01 39 47.84 +11 02 10.0 V 703
2021-10-03 17:45:02 C 01 40 53.14 +11 03 45.1 V D29
2021-10-03 18:05:24 C 01 40 55.05 +11 03 48.0 V D29
2021-10-07 06:17:23 C 01 49 36.86 +11 14 34.0 V G96