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
2008-08-23 23:00:33 C 19 23 21.58 -15 58 20.6 r J53
2008-08-23 23:06:25 C 19 23 21.78 -15 58 26.2 r J53
2008-08-23 23:08:28 C 19 23 21.84 -15 58 28.1 r J53
2008-08-25 10:58:18 C 19 24 41.29 -16 31 39.0 r E12
2008-08-25 11:23:55 C 19 24 42.15 -16 32 01.8 r E12
2008-08-25 11:36:23 C 19 24 42.62 -16 32 13.7 r E12
2008-08-30 03:27:12 C 19 29 11.83 -18 05 57.8 r H53
2008-08-30 03:29:19 C 19 29 11.85 -18 05 59.3 r H53
2008-08-30 03:30:50 C 19 29 11.90 -18 06 00.9 r H53
2008-08-30 03:32:25 C 19 29 12.06 -18 06 02.0 r H53
2008-08-30 03:34:00 C 19 29 12.04 -18 06 03.3 r H53
2008-08-30 03:35:41 C 19 29 12.16 -18 06 04.5 r H53
2008-08-31 03:48:36 C 19 30 14.60 -18 24 15.5 o H47
2008-08-31 04:17:50 C 19 30 15.82 -18 24 36.7 o H47
2008-09-21 11:13:46 C 19 57 06.94 -22 32 43.0 r E12
2008-09-21 11:16:11 C 19 57 07.05 -22 32 43.6 r E12
2008-09-21 11:30:46 C 19 57 07.88 -22 32 48.1 r E12
2008-09-21 11:33:11 C 19 57 08.02 -22 32 48.8 r E12
2008-09-21 11:50:15 C 19 57 09.00 -22 32 53.1 r E12
2008-09-21 12:04:49 C 19 57 09.93 -22 32 57.7 r E12
2008-09-28 02:24:54 C 20 06 55.94 -23 08 52.7 18.7 c 704
2008-09-28 02:43:08 C 20 06 57.12 -23 08 56.7 17.8 c 704
2008-09-28 03:01:19 C 20 06 58.17 -23 08 59.4 18.6 c 704
2008-09-28 03:19:43 C 20 06 59.27 -23 09 02.3 18.7 c 704
2008-09-28 03:37:54 C 20 07 00.39 -23 09 05.2 18.5 c 704
2008-10-03 11:46:56 C 20 15 16.66 -23 27 03.7 r E12
2008-10-03 11:55:45 C 20 15 17.20 -23 27 05.3 r E12
2008-10-03 12:04:44 C 20 15 17.89 -23 27 07.8 r E12
2008-10-03 12:13:34 C 20 15 18.36 -23 27 07.8 r E12
2009-11-22 10:25:56 C 06 02 28.86 -00 41 37.4 r 703
2009-11-22 10:33:44 C 06 02 28.57 -00 41 38.8 r 703
2009-11-22 10:41:44 C 06 02 28.24 -00 41 40.7 r 703
2009-11-22 10:49:35 C 06 02 27.78 -00 41 42.7 r 703
2009-11-22 10:57:37 C 06 02 27.56 -00 41 44.4 r 703
2009-11-25 02:49:56 C 05 59 55.70 -00 56 54.1 19.2 o C20
2009-11-25 02:56:17 C 05 59 55.44 -00 56 55.3 19.0 o C20
2009-11-30 08:06:52 C 05 54 13.49 -01 22 03.7 309
2009-11-30 08:06:52 C 05 54 13.49 -01 22 03.6 L W91
2009-11-30 08:08:35 C 05 54 13.40 -01 22 03.9 L W91
2009-11-30 08:08:35 C 05 54 13.39 -01 22 03.9 309
2009-11-30 08:12:38 C 05 54 13.19 -01 22 04.8 309
2009-11-30 08:12:38 C 05 54 13.19 -01 22 04.8 L W91
2009-11-30 08:14:24 C 05 54 13.11 -01 22 05.2 309
2009-11-30 08:14:24 C 05 54 13.11 -01 22 05.0 L W91
2009-12-06 02:02:17 C 05 46 54.96 -01 41 59.3 19.5 o C20
2009-12-10 23:42:46 C 05 39 58.93 -01 50 57.9 18.6 o C20
2009-12-10 23:49:07 C 05 39 58.53 -01 50 58.4 18.7 o C20
2009-12-20 06:13:35 C 05 25 48.29 -01 44 51.7 19.3 c 704
2009-12-20 06:32:43 C 05 25 46.91 -01 44 49.4 19.4 c 704
2009-12-20 06:51:59 C 05 25 45.69 -01 44 48.1 19.4 c 704