2001 PH9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5412461401 ± 9.37e-08
Semi-major axis (a)2.7189716302 AU ± 2.02e-08
Inclination (i)5.44916906° ± 6.95e-06
Long. of Asc. Node (Ω)287.32130806° ± 7.54e-05
Arg. of Perihelion (ω)65.58783134° ± 9.27e-05
Mean Anomaly (M)139.91116630° ± 2.03e-05
Mean Motion (n)0.2198392643°/day ± 2.46e-09
Perihelion dist (q)1.24733873 AU ± 2.55e-07
Aphelion dist (Q)4.19060453 AU ± 2.57e-07
Orbital Period4.48339511 yr ± 5.01e-08
Physical Parameters
H (abs. magnitude)21.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.360″
Uncertainty0
Orbit TypeAmor
MOID0.257622 AU
Observations Used72
Oppositions14
Arc Total2001-2019
First Observation Used2001-08-10
Last Observation Used2019-11-04
Observations (74)
Date Type RA Dec Mag Band Observatory
2001-08-10 06:15:21 C 21 15 54.30 -04 37 11.1 20.3 c 644
2001-08-10 06:29:55 C 21 15 54.31 -04 36 57.4 20.2 c 644
2001-08-10 06:44:28 C 21 15 54.34 -04 36 43.9 20.4 c 644
2001-08-10 23:44:50 C 21 16 01.32 -04 20 48.3 d 557
2001-08-11 00:11:40 C 21 16 01.38 -04 20 24.5 d 557
2001-08-11 00:30:37 C 21 16 01.50 -04 20 03.6 d 557
2001-08-11 00:40:59 C 21 16 01.38 -04 19 54.8 d 557
2001-08-11 06:22:35 C 21 16 05.06 -04 14 26.6 c 644
2001-08-11 06:38:17 C 21 16 05.07 -04 14 12.0 c 644
2001-08-11 06:54:01 C 21 16 05.09 -04 13 57.2 c 644
2001-08-11 09:00:05 C 21 16 05.51 -04 12 02.3 c 658
2001-08-11 09:04:28 C 21 16 05.49 -04 11 58.6 c 658
2001-08-11 09:10:52 C 21 16 05.46 -04 11 52.7 c 658
2001-08-11 21:59:44 C 21 16 12.13 -03 59 43.7 c 046
2001-08-11 22:02:26 C 21 16 12.30 -03 59 40.3 c 046
2001-08-12 09:04:16 C 21 16 15.99 -03 49 08.9 d 649
2001-08-12 09:35:49 C 21 16 16.11 -03 48 39.0 d 649
2001-08-12 09:52:50 C 21 16 16.24 -03 48 23.2 d 649
2001-08-17 06:56:52 C 21 17 20.83 -01 56 02.6 c 649
2001-08-17 07:09:12 C 21 17 20.87 -01 55 50.4 c 649
2001-08-17 07:22:08 C 21 17 20.97 -01 55 38.3 c 649
2001-08-17 07:45:38 C 21 17 21.11 -01 55 15.6 c 649
2001-08-22 16:02:31 C 21 19 01.32 +00 08 55.5 c 413
2001-08-22 16:04:47 C 21 19 01.36 +00 08 58.0 c 413
2001-08-22 16:07:03 C 21 19 01.37 +00 08 59.6 c 413
2001-08-26 20:33:42 C 21 20 56.02 +01 43 49.3 d 557
2001-08-26 20:42:54 C 21 20 56.18 +01 43 57.7 d 557
2001-08-26 20:51:27 C 21 20 56.39 +01 44 08.0 d 557
2001-08-29 05:33:14 C 21 22 16.53 +02 37 02.9 c 711
2001-08-29 05:42:29 C 21 22 16.69 +02 37 11.1 c 711
2001-08-29 05:51:46 C 21 22 17.02 +02 37 20.6 c 711
2001-09-25 02:55:09 C 21 55 26.41 +10 36 46.2 715
2001-09-25 03:10:08 C 21 55 27.44 +10 36 54.2 715
2010-09-04 00:15:08 C 23 25 24.67 +21 14 03.0 r J75
2010-09-04 00:33:46 C 23 25 25.81 +21 14 26.6 r J75
2010-09-04 00:52:20 C 23 25 26.97 +21 14 51.0 r J75
2010-09-04 08:52:03 C 23 26 00.07 +21 25 04.1 o H21
2010-09-04 08:59:08 C 23 26 00.54 +21 25 12.8 o H21
2010-09-04 09:06:22 C 23 26 00.99 +21 25 22.3 o H21
2010-09-04 12:09:29 C 23 26 16.95 +21 29 17.1 o 300
2010-09-04 12:11:38 C 23 26 17.07 +21 29 19.2 o 300
2010-09-04 12:13:29 C 23 26 17.22 +21 29 21.8 o 300
2010-09-04 12:15:21 C 23 26 17.31 +21 29 24.6 o 300
2010-09-04 12:19:05 C 23 26 17.49 +21 29 29.6 o 300
2010-09-04 12:59:30 C 23 26 20.15 +21 30 21.6 o 300
2010-09-04 13:04:14 C 23 26 20.42 +21 30 27.8 o 300
2010-09-04 13:06:36 C 23 26 20.58 +21 30 31.5 o 300
2010-09-09 00:42:50 C 23 33 59.15 +23 39 11.1 v 204
2010-09-09 02:19:49 C 23 34 05.38 +23 40 57.5 v 204
2010-09-09 02:35:01 C 23 34 06.37 +23 41 13.9 v 204