2018 PH9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4555915071 ± 2.83e-05
Semi-major axis (a)2.0525529638 AU ± 1.21e-04
Inclination (i)3.36335725° ± 1.55e-04
Long. of Asc. Node (Ω)320.45170504° ± 1.59e-04
Arg. of Perihelion (ω)357.58476633° ± 1.08e-04
Mean Anomaly (M)170.01272879° ± 7.92e-02
Mean Motion (n)0.3351743050°/day ± 2.97e-05
Perihelion dist (q)1.11742727 AU ± 8.79e-05
Aphelion dist (Q)2.98767866 AU ± 1.86e-04
Orbital Period2.94063796 yr ± 2.61e-04
Physical Parameters
H (abs. magnitude)23.99
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.235″
Uncertainty2
Orbit TypeAmor
MOID0.102019 AU
Observations Used58
Oppositions1
Arc Total2018-2018
First Observation Used2018-08-07
Last Observation Used2018-09-30
Observations (59)
Date Type RA Dec Mag Band Observatory
2018-08-07 07:56:17 C 19 16 05.979 -27 12 54.16 U F51
2018-08-07 08:11:14 C 19 16 08.795 -27 12 29.80 U F51
2018-08-07 08:26:10 C 19 16 11.605 -27 12 05.04 U F51
2018-08-07 08:41:08 C 19 16 14.413 -27 11 40.15 U F51
2018-08-08 08:47:11 C 19 21 21.153 -26 30 48.87 U 568
2018-08-08 08:48:33 C 19 21 21.413 -26 30 46.52 U 568
2018-08-08 08:49:54 C 19 21 21.673 -26 30 44.17 U 568
2018-08-08 21:25:52 C 19 24 06.622 -26 08 48.85 V J04
2018-08-08 21:38:33 C 19 24 09.175 -26 08 27.74 V J04
2018-08-09 05:00:05 C 19 25 42.66 -25 55 30.7 o 711
2018-08-09 05:04:59 C 19 25 43.64 -25 55 22.0 o 711
2018-08-09 05:10:01 C 19 25 44.61 -25 55 12.9 o 711
2018-08-10 08:49:07 C 19 31 48.44 -25 03 33.8 V 474
2018-08-10 08:51:09 C 19 31 48.90 -25 03 29.3 V 474
2018-08-10 08:55:14 C 19 31 49.72 -25 03 22.5 V 474
2018-08-10 08:57:16 C 19 31 50.13 -25 03 19.3 V 474
2018-08-11 09:08:21 C 19 37 10.21 -24 17 54.1 V 474
2018-08-11 09:10:22 C 19 37 10.63 -24 17 50.1 V 474
2018-08-11 09:12:25 C 19 37 11.08 -24 17 46.4 V 474
2018-08-11 09:16:30 C 19 37 11.89 -24 17 38.7 V 474
2018-08-13 09:12:36 C 19 47 52.320 -22 45 08.61 U F51
2018-08-13 09:29:26 C 19 47 55.732 -22 44 34.55 U F51
2018-08-13 09:46:15 C 19 47 59.151 -22 44 00.44 U F51
2018-08-13 10:03:03 C 19 48 02.557 -22 43 26.12 U F51
2018-08-16 00:19:20 C 20 02 10.90 -20 34 02.6 U 807
2018-08-16 00:23:55 C 20 02 11.86 -20 33 53.2 U 807
2018-08-16 00:29:11 C 20 02 12.97 -20 33 42.4 U 807
2018-08-31 05:07:03 C 21 18 48.42 -07 52 43.3 o 691
2018-08-31 05:22:27 C 21 18 50.98 -07 52 14.8 o 691
2018-08-31 05:35:07 C 21 18 53.04 -07 51 52.4 V I52
2018-08-31 05:36:55 C 21 18 53.32 -07 51 49.2 V I52
2018-08-31 05:37:50 C 21 18 53.56 -07 51 46.5 o 691
2018-08-31 05:38:43 C 21 18 53.66 -07 51 46.0 V I52
2018-08-31 05:40:31 C 21 18 53.97 -07 51 42.5 V I52
2018-09-02 04:43:16 C 21 27 17.83 -06 27 09.2 V H21
2018-09-02 04:58:24 C 21 27 20.28 -06 26 42.8 V H21
2018-09-02 05:16:11 C 21 27 23.09 -06 26 11.5 V H21
2018-09-04 06:11:45 C 21 35 41.82 -05 03 42.0 V I52
2018-09-04 06:13:33 C 21 35 42.08 -05 03 39.7 V I52
2018-09-04 06:15:21 C 21 35 42.35 -05 03 36.3 V I52
2018-09-04 21:10:17 C 21 38 09.80 -04 39 50.4 V 204
2018-09-04 21:53:47 C 21 38 16.32 -04 38 41.4 V 204
2018-09-05 05:16:16 C 21 39 27.09 -04 26 59.4 u H21
2018-09-05 05:29:10 C 21 39 29.02 -04 26 38.9 u H21
2018-09-05 05:43:34 C 21 39 31.16 -04 26 16.2 u H21
2018-09-07 04:29:07 C 21 46 53.19 -03 15 40.1 V G96
2018-09-07 04:45:20 C 21 46 55.38 -03 15 18.4 V G96
2018-09-07 04:53:25 C 21 46 56.53 -03 15 07.1 V G96
2018-09-07 05:50:02 C 21 47 04.32 -03 13 44.5 V I52
2018-09-07 05:57:12 C 21 47 05.34 -03 13 35.0 V I52