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
2011-10-29 14:00:50 C 04 03 00.176 -04 17 57.92 L F51
2011-11-17 08:22:56 C 03 39 51.91 -06 34 43.5 r 703
2011-11-17 08:33:39 C 03 39 51.33 -06 34 44.2 r 703
2011-11-17 08:44:26 C 03 39 50.79 -06 34 47.5 r 703
2011-11-23 06:35:41 C 03 31 52.86 -06 58 18.9 r 703
2011-11-23 06:47:50 C 03 31 52.17 -06 58 21.2 r 703
2011-11-23 07:00:12 C 03 31 51.38 -06 58 22.2 r 703
2011-11-23 07:12:34 C 03 31 50.73 -06 58 23.1 r 703
2011-12-31 02:40:56 C 02 56 20.29 -05 10 12.1 r 703
2011-12-31 02:48:16 C 02 56 20.14 -05 10 08.7 r 703
2011-12-31 02:55:39 C 02 56 19.96 -05 10 08.4 r 703
2011-12-31 03:03:03 C 02 56 19.86 -05 10 05.7 r 703
2012-01-11 05:30:18 C 02 54 22.183 -03 35 18.69 L F51
2012-01-11 05:47:31 C 02 54 22.160 -03 35 11.99 L F51
2013-08-27 09:52:58 C 02 43 29.99 -00 51 13.4 u 807
2013-08-27 10:00:09 C 02 43 30.08 -00 51 16.3 u 807
2013-08-27 10:06:36 C 02 43 30.11 -00 51 18.7 u 807
2013-09-05 10:47:09 C 02 43 47.78 -02 22 13.2 q 703
2013-09-05 10:54:15 C 02 43 47.69 -02 22 15.1 q 703
2013-09-05 11:01:26 C 02 43 47.54 -02 22 18.2 q 703
2013-09-05 11:08:43 C 02 43 47.49 -02 22 21.2 q 703
2013-09-17 10:22:10 C 02 39 56.63 -04 42 27.6 q 703
2013-09-17 10:29:32 C 02 39 56.50 -04 42 30.7 q 703
2013-09-17 10:36:48 C 02 39 56.34 -04 42 35.5 q 703
2013-09-17 10:44:00 C 02 39 56.17 -04 42 39.7 q 703
2013-10-05 08:09:05 C 02 25 24.69 -08 28 57.7 q 703
2013-10-05 08:14:45 C 02 25 24.37 -08 29 02.7 q 703
2013-10-05 08:20:28 C 02 25 24.16 -08 29 03.8 q 703
2013-10-05 08:26:06 C 02 25 23.85 -08 29 07.4 q 703
2013-10-05 09:27:38 C 02 25 20.95 -08 29 38.4 q 703
2013-10-05 09:38:07 C 02 25 20.47 -08 29 43.8 q 703
2013-10-05 09:48:35 C 02 25 20.07 -08 29 49.7 q 703
2013-10-05 09:59:12 C 02 25 19.44 -08 29 55.8 q 703
2013-10-12 08:21:34 C 02 17 25.09 -09 51 19.7 q 703
2013-10-12 08:28:52 C 02 17 24.82 -09 51 23.1 q 703
2013-10-12 08:36:12 C 02 17 24.35 -09 51 26.1 q 703
2013-10-12 08:43:22 C 02 17 23.96 -09 51 30.5 q 703
2013-10-12 09:28:26 C 02 17 21.68 -09 51 50.4 q 703
2013-10-12 09:37:28 C 02 17 21.31 -09 51 53.9 q 703
2013-10-12 09:46:28 C 02 17 20.76 -09 51 58.7 q 703
2013-10-12 09:55:28 C 02 17 20.29 -09 52 03.4 q 703
2013-10-23 05:42:21 C 02 03 45.94 -11 37 42.8 o 926
2013-10-23 06:04:52 C 02 03 44.65 -11 37 50.4 o 926
2013-10-23 06:33:52 C 02 03 43.05 -11 38 00.7 o 926
2013-10-24 09:32:49 C 02 02 16.993 -11 47 02.18 L F51
2013-10-24 09:50:05 C 02 02 16.040 -11 47 07.82 L F51
2013-10-24 10:10:00 C 02 02 14.948 -11 47 14.34 L F51
2013-10-27 09:32:30 C 01 58 28.448 -12 09 07.76 L F51
2013-10-27 09:33:25 C 01 58 28.390 -12 09 08.02 L F51
2013-10-27 09:50:23 C 01 58 27.474 -12 09 12.93 L F51