2015 US81

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5330913754 ± 8.83e-08
Semi-major axis (a)2.7701481872 AU ± 2.93e-08
Inclination (i)53.64111147° ± 3.42e-05
Long. of Asc. Node (Ω)93.33953690° ± 7.58e-06
Arg. of Perihelion (ω)294.90179381° ± 2.44e-05
Mean Anomaly (M)71.76017642° ± 1.41e-05
Mean Motion (n)0.2137754224°/day ± 3.40e-09
Perihelion dist (q)1.29340608 AU ± 2.45e-07
Aphelion dist (Q)4.24689029 AU ± 2.49e-07
Orbital Period4.61056876 yr ± 7.32e-08
Physical Parameters
H (abs. magnitude)18.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.303″
Uncertainty0
Orbit TypeAmor
MOID0.553789 AU
Observations Used78
Oppositions8
Arc Total2015-2025
First Observation Used2015-10-31
Last Observation Used2025-02-07
Observations (89)
Date Type RA Dec Mag Band Observatory
2015-10-29 11:35:27 S 07 49 22.72 -27 43 03.9 L C51
2015-10-29 14:44:19 S 07 49 23.16 -27 40 24.1 L C51
2015-10-29 19:27:37 S 07 49 23.67 -27 36 27.5 L C51
2015-10-29 22:36:29 S 07 49 24.10 -27 33 48.7 L C51
2015-10-30 00:10:55 S 07 49 24.20 -27 32 28.2 L C51
2015-10-30 03:19:47 S 07 49 24.422 -27 29 47.65 L C51
2015-10-30 04:54:13 S 07 49 24.52 -27 28 28.0 L C51
2015-10-30 08:03:05 S 07 49 24.674 -27 25 47.86 L C51
2015-10-31 12:22:05 C 07 49 24.10 -27 01 19.8 o 291
2015-10-31 12:27:44 C 07 49 24.06 -27 01 15.7 o 291
2015-11-01 07:09:25 C 07 49 21.56 -26 44 24.8 u 807
2015-11-01 07:16:10 C 07 49 21.54 -26 44 18.5 u 807
2015-11-01 07:36:31 C 07 49 21.46 -26 44 00.4 u 807
2015-11-01 07:43:21 C 07 49 21.42 -26 43 54.0 u 807
2015-11-02 23:50:14 C 07 49 09.18 -26 06 44.1 q K92
2015-11-02 23:55:17 C 07 49 09.12 -26 06 39.5 q K92
2015-11-03 00:02:52 C 07 49 09.04 -26 06 32.4 q K92
2015-11-03 14:21:17 S 07 49 01.714 -25 52 51.85 L C51
2015-11-03 14:21:28 S 07 49 01.706 -25 52 51.42 L C51
2015-11-03 14:56:30 C 07 49 01.726 -25 52 26.33 t 568
2015-11-03 14:59:00 C 07 49 01.700 -25 52 23.87 t 568
2015-11-22 08:55:57 C 07 34 24.85 -15 48 47.1 t 705
2015-11-22 08:57:23 C 07 34 24.77 -15 48 44.2 t 705
2015-11-28 12:30:08 C 07 24 07.22 -10 48 24.0 o 695
2015-11-28 12:40:39 C 07 24 06.34 -10 48 00.4 o 695
2015-11-28 12:51:12 C 07 24 05.47 -10 47 36.3 o 695
2015-12-03 11:36:06 C 07 13 37.06 -05 59 09.2 o 926
2015-12-03 11:44:58 C 07 13 36.18 -05 58 45.8 o 926
2015-12-03 11:53:52 C 07 13 35.24 -05 58 23.1 o 926
2015-12-06 08:17:19 C 07 06 40.57 -02 53 33.2 u H21
2015-12-06 08:23:31 C 07 06 39.89 -02 53 15.8 u H21
2015-12-06 08:29:44 C 07 06 39.23 -02 52 58.4 u H21
2015-12-06 08:35:57 C 07 06 38.55 -02 52 40.7 u H21
2015-12-06 08:42:57 C 07 06 37.80 -02 52 21.1 u H21
2015-12-09 07:07:28 C 06 58 52.48 +00 30 43.9 u H21
2015-12-09 07:09:29 C 06 58 52.27 +00 30 50.3 u H21
2015-12-11 08:52:23 C 06 53 01.73 +03 00 41.4 u H21
2015-12-11 08:56:35 C 06 53 01.25 +03 00 54.6 u H21
2015-12-11 08:59:30 C 06 53 00.92 +03 01 03.5 u H21
2015-12-14 08:36:14 C 06 44 09.64 +06 43 38.4 R G45
2015-12-14 08:42:50 C 06 44 08.76 +06 43 59.4 R G45
2015-12-14 08:52:17 C 06 44 07.52 +06 44 28.6 R G45
2015-12-14 09:00:00 C 06 44 06.51 +06 44 53.6 R G45
2015-12-14 09:07:43 C 06 44 05.50 +06 45 17.5 R G45
2015-12-16 07:13:48 C 06 38 09.38 +09 10 58.8 u H15
2015-12-16 07:28:57 C 06 38 07.36 +09 11 47.2 u H15
2015-12-16 07:43:01 C 06 38 05.46 +09 12 31.4 u H15
2015-12-17 08:03:21 C 06 34 53.48 +10 29 39.0 R G45
2015-12-17 08:09:33 C 06 34 52.63 +10 29 58.6 R G45
2015-12-17 08:17:57 C 06 34 51.50 +10 30 25.0 R G45