11398 (1998 YP11)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3890925931 ± 1.26e-02
Semi-major axis (a)1.7209976315 AU ± 6.54e-03
Inclination (i)15.02091781° ± 1.07e+00
Long. of Asc. Node (Ω)144.71297369° ± 5.91e+00
Arg. of Perihelion (ω)74.76867270° ± 6.17e+00
Mean Anomaly (M)281.68217657° ± 4.35e+00
Mean Motion (n)0.4365579156°/day ± 2.49e-03
Perihelion dist (q)1.05137020 AU ± 2.20e-02
Aphelion dist (Q)2.39062506 AU ± 2.35e-02
Orbital Period2.25772171 yr ± 1.29e-02
NGA Modelr2
A24.42027461e-07 AU/d²
Physical Parameters
H (abs. magnitude)16.36
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.212″
Uncertainty0
Orbit TypeAmor
MOID0.203136 AU
Observations Used3456
Gaia Obs Used159
Oppositions19
Arc Total1983-2026
First Observation Used1983-01-05
Last Observation Used2026-01-12
Observations (3624)
Date Type RA Dec Mag Band Observatory
2021-01-09 06:41:20 C 02 44 30.719 -04 13 35.50 U F52
2021-01-09 06:57:03 C 02 44 30.721 -04 13 29.41 U F52
2021-01-13 03:11:48 C 02 44 55.73 -03 37 24.6 V G96
2021-01-13 03:19:15 C 02 44 55.75 -03 37 21.5 V G96
2021-01-13 03:26:40 C 02 44 55.82 -03 37 18.6 V G96
2021-01-13 03:34:07 C 02 44 55.83 -03 37 15.6 V G96
2021-02-01 06:08:43 C 02 53 09.134 -00 21 05.68 U F51
2021-02-01 06:27:33 C 02 53 09.645 -00 20 57.13 U F51
2021-02-01 06:46:24 C 02 53 10.148 -00 20 48.68 U F51
2021-02-01 07:05:16 C 02 53 10.665 -00 20 40.36 U F51
2022-09-18 08:22:04 C 02 26 34.588 -05 49 34.93 V 703
2022-09-18 08:30:04 C 02 26 34.418 -05 49 39.40 V 703
2022-09-18 08:46:04 C 02 26 33.900 -05 49 47.17 V 703
2022-09-25 09:12:13 C 02 21 12.179 -07 22 06.17 V 703
2022-09-25 09:37:34 C 02 21 11.038 -07 22 21.54 V 703
2022-09-26 04:20:01 C 02 20 29.94 -07 32 30.8 V W94
2022-09-26 04:28:52 C 02 20 29.56 -07 32 35.7 V W94
2022-09-26 04:37:43 C 02 20 29.20 -07 32 40.4 V W94
2022-09-26 12:14:37 C 02 20 11.853 -07 36 55.55 U F51
2022-09-26 12:35:57 C 02 20 11.012 -07 37 07.24 U F51
2022-09-26 12:57:18 C 02 20 10.169 -07 37 18.95 U F51
2022-09-26 13:18:39 C 02 20 09.322 -07 37 30.57 U F51
2022-09-28 08:04:39 C 02 18 29.585 -08 00 54.32 V G96
2022-09-28 08:12:04 C 02 18 29.268 -08 00 58.61 V G96
2022-09-28 08:17:37 C 02 18 29.070 -08 01 00.05 V 703
2022-09-28 08:19:31 C 02 18 28.969 -08 01 02.46 V G96
2022-09-28 08:25:15 C 02 18 28.843 -08 01 05.27 V 703
2022-09-28 08:26:58 C 02 18 28.656 -08 01 06.64 V G96
2022-09-28 08:40:30 C 02 18 28.098 -08 01 14.66 V 703
2022-10-01 11:39:42 C 02 15 20.232 -08 41 42.06 U F51
2022-10-01 11:58:57 C 02 15 19.357 -08 41 52.34 U F51
2022-10-01 12:37:48 C 02 15 17.606 -08 42 13.07 U F51
2022-10-02 11:15:57 C 02 14 18.024 -08 54 14.54 V T08
2022-10-02 11:18:37 C 02 14 17.897 -08 54 16.31 V T08
2022-10-02 12:00:12 C 02 14 16.046 -08 54 37.66 V T08
2022-10-02 12:39:22 C 02 14 14.170 -08 55 01.34 V T08
2022-10-17 09:07:43 C 01 56 29.799 -11 43 59.09 U F52
2022-10-17 09:24:09 C 01 56 28.894 -11 44 05.74 U F52
2022-10-17 09:40:34 C 01 56 27.998 -11 44 12.30 U F52
2022-10-17 09:57:04 C 01 56 27.096 -11 44 18.93 U F52
2022-10-19 06:39:46 C 01 54 04.421 -12 01 42.24 V 703
2022-10-19 06:47:25 C 01 54 04.000 -12 01 44.58 V 703
2022-10-19 06:55:04 C 01 54 03.636 -12 01 47.10 V 703
2022-10-19 07:02:43 C 01 54 03.186 -12 01 50.66 V 703
2022-10-20 09:36:52 C 01 52 38.410 -12 11 38.62 V T05
2022-10-20 09:44:02 C 01 52 37.963 -12 11 40.31 V T05
2022-10-20 09:45:20 C 01 52 37.884 -12 11 42.18 V T05
2022-10-20 09:47:57 C 01 52 37.745 -12 11 41.86 V T05
2022-10-21 04:56:10 C 01 51 36.586 -12 18 25.96 V W68
2022-10-21 05:03:19 C 01 51 36.192 -12 18 28.76 V W68