219071 (1997 US9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2820711429 ± 6.63e-09
Semi-major axis (a)1.0527884824 AU ± 1.46e-10
Inclination (i)20.01820269° ± 6.53e-07
Long. of Asc. Node (Ω)212.18222472° ± 1.22e-06
Arg. of Perihelion (ω)357.39208828° ± 1.90e-06
Mean Anomaly (M)182.27746302° ± 1.78e-06
Mean Motion (n)0.9124321690°/day ± 1.90e-10
Perihelion dist (q)0.75582723 AU ± 6.98e-09
Aphelion dist (Q)1.34974973 AU ± 6.98e-09
Orbital Period1.08021869 yr ± 2.25e-10
Physical Parameters
H (abs. magnitude)17.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.078″
Uncertainty0
Orbit TypeApollo
MOID0.249406 AU
Observations Used2715
Gaia Obs Used144
Oppositions1
Arc Total1997-2015
First Observation Used1997-10-19
Last Observation Used2025-12-13
Observations (2988)
Date Type RA Dec Mag Band Observatory
2024-08-23 13:27:30 C 02 52 45.552 +39 32 54.67 V T08
2024-08-23 13:41:16 C 02 52 46.157 +39 32 54.02 V T08
2024-08-23 13:45:21 C 02 52 46.368 +39 32 51.68 V T08
2024-08-23 13:59:31 C 02 52 46.990 +39 32 52.33 V T08
2024-08-26 00:18:36 C 02 55 38.990 +39 26 07.44 V 088
2024-08-26 00:24:48 C 02 55 39.245 +39 26 06.94 V 088
2024-08-26 00:31:46 C 02 55 39.574 +39 26 05.93 V 088
2024-08-27 10:51:30 C 02 57 13.829 +39 21 06.66 V T08
2024-08-27 10:56:09 C 02 57 14.040 +39 21 05.87 V T08
2024-08-27 11:02:49 C 02 57 14.304 +39 21 04.50 V T08
2024-08-27 11:10:48 C 02 57 14.606 +39 21 03.28 V T08
2024-08-30 12:54:25 C 03 00 16.010 +39 07 35.76 V T08
2024-08-30 12:57:05 C 03 00 16.099 +39 07 35.26 V T08
2024-08-30 13:19:25 C 03 00 16.843 +39 07 30.72 V T08
2024-08-30 13:46:06 C 03 00 17.726 +39 07 25.36 V T08
2024-09-01 12:46:54 C 03 01 58.805 +38 56 36.71 V T05
2024-09-01 12:51:27 C 03 01 58.927 +38 56 36.02 V T05
2024-09-01 12:59:16 C 03 01 59.148 +38 56 34.26 V T05
2024-09-01 13:14:40 C 03 01 59.585 +38 56 30.55 V T05
2024-09-02 09:48:28 C 03 02 39.851 +38 51 10.15 V G96
2024-09-02 09:55:59 C 03 02 40.045 +38 51 08.24 V G96
2024-09-02 10:03:29 C 03 02 40.268 +38 51 06.37 V G96
2024-09-02 10:11:00 C 03 02 40.506 +38 51 04.82 V G96
2024-09-02 13:55:36 C 03 02 47.345 +38 50 07.74 X F52
2024-09-02 14:06:31 C 03 02 47.602 +38 50 05.17 V T08
2024-09-02 14:09:11 C 03 02 47.664 +38 50 04.06 V T08
2024-09-02 14:11:48 C 03 02 47.764 +38 50 03.45 X F52
2024-09-02 14:13:27 C 03 02 47.786 +38 50 03.48 V T08
2024-09-02 14:28:02 C 03 02 48.194 +38 49 59.12 X F52
2024-09-02 14:41:54 C 03 02 48.526 +38 49 56.06 V T08
2024-09-02 14:44:20 C 03 02 48.614 +38 49 54.76 X F52
2024-09-04 13:03:20 C 03 04 09.326 +38 36 28.69 V T05
2024-09-04 13:06:07 C 03 04 09.384 +38 36 28.51 V T05
2024-09-04 13:10:41 C 03 04 09.463 +38 36 26.78 V T05
2024-09-04 13:10:55 C 03 04 09.456 +38 36 27.22 V T08
2024-09-04 13:13:34 C 03 04 09.509 +38 36 26.32 V T08
2024-09-04 13:18:29 C 03 04 09.655 +38 36 24.19 V T05
2024-09-04 13:20:53 C 03 04 09.679 +38 36 23.87 V T08
2024-09-04 13:28:13 C 03 04 09.890 +38 36 21.67 V T08
2024-09-06 13:36:40 C 03 05 19.316 +38 20 20.22 X F51
2024-09-06 13:52:52 C 03 05 19.576 +38 20 14.60 X F51
2024-09-06 14:09:06 C 03 05 19.842 +38 20 08.87 X F51
2024-09-06 14:25:22 C 03 05 20.105 +38 20 03.11 X F51
2024-09-08 10:43:50 C 03 06 11.052 +38 03 14.26 V G96
2024-09-08 10:51:15 C 03 06 11.149 +38 03 11.27 V G96
2024-09-08 10:58:41 C 03 06 11.232 +38 03 08.35 V G96
2024-09-08 11:06:06 C 03 06 11.318 +38 03 05.33 V G96
2024-09-08 12:01:44 C 03 06 12.876 +38 02 44.70 V T05
2024-09-08 12:05:49 C 03 06 12.910 +38 02 42.94 V T05
2024-09-08 12:39:33 C 03 06 13.349 +38 02 30.26 V T05