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
2010-10-09 10:26:21 C 03 33 18.781 +15 28 20.16 L F51
2010-10-09 10:49:32 C 03 33 18.348 +15 28 18.05 L F51
2010-10-09 11:38:17 C 03 33 17.450 +15 28 13.49 L F51
2010-11-02 08:53:28 C 03 03 10.72 +13 19 14.4 r G96
2010-11-02 09:03:30 C 03 03 09.68 +13 19 10.2 r G96
2010-11-02 09:13:26 C 03 03 08.67 +13 19 06.3 r G96
2010-11-02 09:23:25 C 03 03 07.63 +13 19 02.4 r G96
2010-11-04 07:32:14 C 02 58 22.12 +12 59 57.7 19.5 c 704
2010-11-04 07:50:18 C 02 58 20.10 +12 59 49.4 19.7 c 704
2010-11-04 08:08:24 C 02 58 18.05 +12 59 42.0 19.5 c 704
2010-11-04 08:26:28 C 02 58 16.03 +12 59 33.7 19.7 c 704
2010-11-04 08:44:32 C 02 58 13.99 +12 59 25.4 19.7 c 704
2010-11-05 05:20:23 C 02 55 58.76 +12 50 20.0 19.6 c 704
2010-11-05 05:38:16 C 02 55 56.61 +12 50 12.4 19.4 c 704
2010-11-05 05:56:11 C 02 55 54.57 +12 50 03.7 19.7 c 704
2010-11-05 06:14:04 C 02 55 52.49 +12 49 56.1 19.7 c 704
2010-11-05 23:07:32 C 02 53 56.58 +12 42 07.3 v 204
2010-11-05 23:13:48 C 02 53 55.82 +12 42 04.3 v 204
2010-11-05 23:19:39 C 02 53 55.11 +12 42 01.8 v 204
2010-11-05 23:25:42 C 02 53 54.40 +12 41 58.8 v 204
2010-11-05 23:31:57 C 02 53 53.66 +12 41 56.0 v 204
2010-11-09 06:01:59 C 02 44 09.45 +12 02 40.8 r 703
2010-11-09 06:09:24 C 02 44 08.34 +12 02 36.7 r 703
2010-11-09 06:16:53 C 02 44 07.36 +12 02 32.4 r 703
2010-11-09 06:24:14 C 02 44 06.39 +12 02 28.2 r 703
2010-11-09 06:30:16 C 02 44 05.47 +12 02 25.6 19.5 c 704
2010-11-09 06:48:55 C 02 44 02.84 +12 02 16.6 20.1 c 704
2010-11-09 07:07:36 C 02 44 00.31 +12 02 05.8 19.5 c 704
2010-11-10 06:19:13 C 02 40 52.63 +11 49 21.5 19.0 c 704
2010-11-10 06:55:54 C 02 40 47.52 +11 49 00.6 18.9 c 704
2010-11-10 07:32:32 C 02 40 42.26 +11 48 40.6 19.2 c 704
2010-11-11 05:55:20 C 02 37 34.63 +11 35 53.2 19.1 c 704
2010-11-11 06:03:53 C 02 37 33.42 +11 35 47.9 r G96
2010-11-11 06:13:33 C 02 37 31.96 +11 35 42.1 19.5 c 704
2010-11-11 06:13:52 C 02 37 31.90 +11 35 42.2 r G96
2010-11-11 06:23:54 C 02 37 30.43 +11 35 36.3 r G96
2010-11-11 06:31:46 C 02 37 29.21 +11 35 31.8 19.5 c 704
2010-11-11 06:33:58 C 02 37 28.95 +11 35 30.5 r G96
2010-11-11 06:50:50 C 02 37 26.39 +11 35 20.9 19.4 c 704
2010-11-11 07:09:01 C 02 37 23.72 +11 35 10.2 19.2 c 704
2010-11-13 19:20:43 C 02 28 26.31 +10 58 10.3 u A13
2010-11-13 19:40:33 C 02 28 23.19 +10 57 57.7 u A13
2010-11-13 20:00:57 C 02 28 19.93 +10 57 45.0 u A13
2010-11-27 05:19:56 C 01 28 15.85 +06 39 58.6 r 703
2010-11-27 05:29:49 C 01 28 13.62 +06 39 49.0 r 703
2010-11-27 05:39:47 C 01 28 11.42 +06 39 39.8 r 703
2010-11-27 05:49:50 C 01 28 09.22 +06 39 30.4 r 703
2010-12-02 04:51:49 C 01 01 45.69 +04 41 57.0 r 703
2010-12-02 04:59:08 C 01 01 43.78 +04 41 49.2 r 703
2010-12-02 05:06:34 C 01 01 42.13 +04 41 41.8 r 703