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
2013-10-27 09:51:17 C 01 58 27.430 -12 09 13.15 L F51
2013-11-06 04:20:32 C 01 46 41.78 -12 59 26.6 V G45
2013-11-06 05:28:56 C 01 46 38.44 -12 59 36.0 V G45
2013-11-06 06:45:34 C 01 46 34.80 -12 59 46.6 V G45
2013-11-06 08:01:26 C 01 46 31.09 -12 59 57.1 V G45
2013-12-05 07:05:06 C 01 25 20.057 -12 21 42.98 L F51
2013-12-05 07:22:28 C 01 25 19.820 -12 21 39.17 L F51
2014-11-29 12:39:16 C 12 57 16.18 -03 38 41.8 q 703
2014-11-29 12:43:36 C 12 57 16.90 -03 38 45.1 q 703
2014-11-29 12:47:56 C 12 57 17.50 -03 38 46.5 q 703
2014-11-29 12:52:15 C 12 57 18.24 -03 38 49.8 q 703
2015-06-22 14:03:44 C 00 14 01.700 +01 18 59.91 L F51
2015-06-22 14:09:39 C 00 14 02.028 +01 18 59.85 L F51
2015-06-22 14:15:34 C 00 14 02.361 +01 18 59.75 L F51
2015-06-22 14:21:33 C 00 14 02.694 +01 18 59.65 L F51
2015-06-26 13:57:46 C 00 19 19.901 +01 15 34.31 L F51
2015-06-26 14:03:20 C 00 19 20.191 +01 15 34.01 L F51
2015-06-26 14:08:54 C 00 19 20.477 +01 15 33.70 L F51
2015-06-26 14:14:28 C 00 19 20.764 +01 15 33.40 L F51
2015-08-09 09:57:28 C 00 46 03.52 -04 15 48.9 R G45
2015-08-09 10:04:28 C 00 46 03.46 -04 15 53.0 R G45
2015-08-09 10:11:29 C 00 46 03.35 -04 15 57.1 R G45
2015-08-09 10:18:32 C 00 46 03.28 -04 16 01.2 R G45
2015-08-14 10:04:04 C 00 44 36.00 -05 31 04.9 R G45
2015-08-14 10:11:33 C 00 44 35.86 -05 31 09.7 R G45
2015-08-14 10:19:42 C 00 44 35.70 -05 31 14.7 R G45
2015-08-14 10:26:37 C 00 44 35.58 -05 31 19.7 R G45
2015-09-07 13:34:37 C 00 24 12.73 -12 33 18.1 u Q60
2015-09-07 13:48:31 C 00 24 12.01 -12 33 28.9 u Q60
2015-09-07 14:02:31 C 00 24 11.28 -12 33 38.7 u Q60
2015-09-08 12:01:48 C 00 23 04.035 -12 49 50.76 L F51
2015-09-08 12:17:39 C 00 23 03.186 -12 50 02.21 L F51
2015-09-08 12:33:31 C 00 23 02.335 -12 50 13.82 L F51
2015-09-08 12:49:23 C 00 23 01.484 -12 50 25.31 L F51
2015-09-15 07:10:51 C 00 14 22.79 -14 43 50.0 R G45
2015-09-15 07:18:48 C 00 14 22.35 -14 43 55.4 R G45
2015-09-15 07:25:33 C 00 14 21.94 -14 43 59.4 R G45
2015-09-15 07:32:50 C 00 14 21.56 -14 44 04.5 R G45
2015-09-15 07:39:49 C 00 14 21.15 -14 44 09.0 R G45
2015-09-15 07:44:40 C 00 14 20.86 -14 44 12.3 R G45
2015-09-15 07:59:48 C 00 14 20.01 -14 44 22.0 R G45
2015-09-15 08:13:29 C 00 14 19.22 -14 44 31.4 R G45
2015-09-18 17:35:00 C 00 09 50.41 -15 36 26.0 u Q60
2015-09-18 17:48:26 C 00 09 49.61 -15 36 35.0 u Q60
2015-09-18 18:01:35 C 00 09 48.89 -15 36 42.6 u Q60
2015-09-24 12:28:03 C 00 02 15.93 -16 55 52.7 u Q60
2015-09-24 12:41:14 C 00 02 15.19 -16 55 59.4 u Q60
2015-09-24 12:54:42 C 00 02 14.45 -16 56 06.8 u Q60
2015-10-05 07:29:28 C 23 49 20.353 -18 47 04.95 L F51
2015-10-05 07:45:26 C 23 49 19.602 -18 47 10.30 L F51