251722 (1997 US2)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6609766826 ± 3.65e-08
Semi-major axis (a)1.6747840832 AU ± 2.90e-09
Inclination (i)3.17093796° ± 9.10e-06
Long. of Asc. Node (Ω)65.87860866° ± 6.24e-05
Arg. of Perihelion (ω)100.33020846° ± 6.28e-05
Mean Anomaly (M)297.51524956° ± 6.90e-06
Mean Motion (n)0.4547513940°/day ± 1.18e-09
Perihelion dist (q)0.56779086 AU ± 6.11e-08
Aphelion dist (Q)2.78177731 AU ± 6.13e-08
Orbital Period2.16739585 yr ± 5.63e-09
Physical Parameters
H (abs. magnitude)19.83
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.495″
Uncertainty0
Orbit TypeApollo
MOID0.006194 AU
Observations Used270
Oppositions15
Arc Total1997-2025
First Observation Used1997-10-23
Last Observation Used2025-10-20
Observations (282)
Date Type RA Dec Mag Band Observatory
2023-11-05 08:44:49 C 02 58 51.881 +13 06 00.11 V G96
2023-11-05 08:45:30 C 02 58 51.809 +13 05 59.64 V G96
2023-11-05 08:52:58 C 02 58 50.970 +13 05 56.47 V G96
2023-11-07 07:24:13 C 02 53 31.657 +12 44 51.54 V 703
2023-11-07 07:31:54 C 02 53 30.721 +12 44 47.98 V 703
2023-11-07 07:39:35 C 02 53 29.749 +12 44 44.84 V 703
2023-11-07 07:47:16 C 02 53 28.802 +12 44 40.34 V 703
2023-11-09 00:37:10 C 02 48 24.943 +12 24 53.89 V M22
2023-11-09 00:41:45 C 02 48 24.286 +12 24 51.30 V M22
2023-11-09 00:49:39 C 02 48 23.210 +12 24 47.23 V M22
2023-11-09 01:12:25 C 02 48 20.328 +12 24 37.76 V M22
2023-11-09 07:47:43 C 02 47 29.857 +12 20 53.34 V 703
2023-11-09 07:55:24 C 02 47 28.777 +12 20 48.80 V 703
2023-11-09 08:03:06 C 02 47 27.762 +12 20 45.42 V 703
2023-11-09 08:10:47 C 02 47 26.779 +12 20 41.93 V 703
2023-11-13 05:01:47 C 02 34 27.278 +11 28 44.51 V W68
2023-11-13 05:22:50 C 02 34 23.966 +11 28 30.61 V W68
2023-11-13 05:28:18 C 02 34 23.119 +11 28 27.55 V W68
2023-11-13 05:36:23 C 02 34 21.926 +11 28 22.94 V W68
2023-11-13 06:57:13 C 02 34 10.121 +11 27 12.28 V 703
2023-11-13 07:04:54 C 02 34 08.936 +11 27 07.49 V 703
2023-11-13 07:20:18 C 02 34 06.532 +11 26 58.13 V 703
2023-11-16 03:30:54 C 02 23 20.621 +10 43 15.38 V W68
2023-11-16 03:35:31 C 02 23 19.836 +10 43 12.14 V W68
2023-11-16 03:43:21 C 02 23 18.511 +10 43 06.31 V W68
2023-11-16 03:58:36 C 02 23 15.866 +10 42 56.16 V W68
2023-11-18 03:37:38 C 02 15 08.388 +10 09 15.08 V W68
2023-11-18 03:42:15 C 02 15 07.558 +10 09 11.12 V W68
2023-11-18 03:54:40 C 02 15 05.292 +10 09 02.45 V W68
2023-11-18 04:10:40 C 02 15 02.419 +10 08 49.38 V W68
2023-11-19 06:06:49 C 02 10 26.307 +09 49 07.85 X F52
2023-11-19 06:32:52 C 02 10 21.461 +09 48 48.42 X F52
2023-11-19 06:45:49 C 02 10 19.047 +09 48 38.69 X F52
2023-12-02 19:20:52 C 01 02 14.885 +04 52 47.57 V M22
2023-12-02 19:25:33 C 01 02 13.783 +04 52 42.31 V M22
2023-12-02 19:48:08 C 01 02 08.311 +04 52 19.24 V M22
2023-12-02 19:56:03 C 01 02 06.403 +04 52 11.14 V M22
2023-12-03 05:51:22 C 00 59 46.806 +04 41 17.38 V 703
2023-12-03 05:57:10 C 00 59 45.524 +04 41 11.80 V 703
2023-12-03 06:00:05 C 00 59 44.941 +04 41 09.74 V 703
2023-12-06 04:56:00 C 00 42 55.436 +03 25 50.99 V G96
2023-12-06 05:04:11 C 00 42 53.406 +03 25 42.02 V G96
2023-12-06 05:12:23 C 00 42 51.383 +03 25 33.13 V G96
2023-12-06 05:20:35 C 00 42 49.360 +03 25 24.38 V G96
2023-12-07 04:43:45 C 00 37 10.981 +03 00 07.96 V 703
2023-12-07 04:49:39 C 00 37 09.710 +03 00 02.27 V 703
2023-12-07 04:52:36 C 00 37 09.131 +02 59 59.35 V 703
2023-12-07 05:41:20 C 00 36 58.063 +02 59 12.06 X F52
2023-12-07 05:59:18 C 00 36 53.551 +02 58 52.58 X F52
2023-12-07 06:17:20 C 00 36 49.026 +02 58 32.94 X F52