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
2025-02-01 02:08:29 C 02 17 10.028 -12 48 34.85 V 703
2025-02-14 05:45:28 C 02 42 41.635 -10 59 20.11 V T05
2025-02-14 05:53:20 C 02 42 42.202 -10 59 16.69 V T05
2025-02-14 06:09:11 C 02 42 43.510 -10 59 10.72 V T05
2025-02-14 06:21:35 C 02 42 44.542 -10 59 06.00 V T05
2025-02-14 06:29:27 C 02 42 45.202 -10 59 03.41 V T05
2025-02-18 05:41:09 C 02 50 55.279 -10 22 50.66 V T05
2025-02-18 05:45:09 C 02 50 55.649 -10 22 49.01 V T05
2025-02-18 05:49:46 C 02 50 56.023 -10 22 47.17 V T05
2025-02-18 06:08:16 C 02 50 57.571 -10 22 39.76 V T05
2025-02-18 06:08:55 C 02 50 57.643 -10 22 39.58 V T05
2025-02-18 06:17:23 C 02 50 58.298 -10 22 36.16 V T05
2025-02-22 02:28:51 C 02 59 04.294 -09 46 05.52 V 703
2025-02-22 02:35:32 C 02 59 04.801 -09 46 01.45 V 703
2025-02-22 02:38:52 C 02 59 05.204 -09 45 59.33 V 703
2025-06-15 23:19:12 B 01 51 55.435 +64 51 20.41 W Z80
2025-06-15 23:27:20 B 01 51 53.688 +64 51 22.54 W Z80
2025-06-16 23:38:37 B 01 46 45.238 +64 56 45.31 W Z80
2025-06-16 23:46:29 B 01 46 43.670 +64 56 46.90 W Z80
2025-06-17 23:29:49 B 01 41 58.493 +65 00 52.78 W Z80
2025-06-17 23:38:28 B 01 41 56.722 +65 00 54.58 W Z80
2025-06-17 23:46:03 B 01 41 55.440 +65 00 56.02 W Z80
2025-06-18 23:24:11 B 01 37 27.960 +65 04 02.39 W Z80
2025-06-18 23:36:18 B 01 37 25.790 +65 04 04.15 W Z80
2025-06-20 23:51:38 B 01 29 09.478 +65 08 01.75 W Z80
2025-06-20 23:55:42 B 01 29 08.902 +65 08 02.29 W Z80
2025-06-23 14:12:11 C 01 19 58.853 +65 10 01.60 V T05
2025-06-23 14:26:12 C 01 19 56.782 +65 10 02.78 V T05
2025-06-23 14:26:51 C 01 19 56.681 +65 10 02.46 V T05
2025-06-23 14:27:31 C 01 19 56.611 +65 10 02.71 V T05
2025-06-26 03:08:14 C 01 12 26.698 +65 09 05.08 V R17
2025-06-26 03:29:51 C 01 12 24.156 +65 09 06.48 V R17
2025-06-26 03:51:22 C 01 12 21.557 +65 09 07.45 V R17
2025-06-26 04:12:48 C 01 12 19.018 +65 09 08.71 V R17
2025-06-27 22:54:10 B 01 07 46.078 +65 07 24.96 W Z80
2025-06-27 23:06:03 B 01 07 44.988 +65 07 25.14 W Z80
2025-06-27 23:18:20 B 01 07 43.778 +65 07 25.21 W Z80
2025-06-28 23:23:04 B 01 05 24.420 +65 06 27.36 W Z80
2025-06-28 23:35:09 B 01 05 23.486 +65 06 27.25 W Z80
2025-06-29 23:14:58 B 01 03 15.506 +65 05 24.07 W Z80
2025-06-29 23:32:54 B 01 03 14.081 +65 05 24.22 W Z80
2025-06-30 02:22:16 C 01 03 00.319 +65 05 26.52 V R17
2025-06-30 02:43:20 C 01 02 58.428 +65 05 26.81 V R17
2025-06-30 03:04:18 C 01 02 56.556 +65 05 27.31 V R17
2025-06-30 03:25:32 C 01 02 54.530 +65 05 27.85 V R17
2025-07-03 22:51:39 B 00 55 57.557 +65 00 51.77 W Z80
2025-07-03 23:03:36 B 00 55 56.810 +65 00 51.77 W Z80
2025-07-04 01:58:22 C 00 55 45.994 +65 00 53.21 V R17
2025-07-04 02:25:47 C 00 55 44.162 +65 00 54.07 V R17
2025-07-04 02:47:29 C 00 55 42.595 +65 00 54.43 V R17