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
2008-02-11 09:51:33 C 11 22 17.42 +08 04 04.1 r H45
2008-02-11 09:53:52 C 11 22 17.57 +08 04 08.0 r H45
2008-02-11 09:55:19 C 11 22 17.68 +08 04 10.2 r H45
2008-02-13 08:56:22 C 11 25 49.37 +09 25 35.5 o 691
2008-02-13 09:21:47 C 11 25 51.13 +09 26 21.6 o 691
2008-02-13 09:43:48 C 11 25 52.65 +09 27 01.5 o 691
2008-02-14 23:16:52 C 11 28 48.45 +10 37 33.5 r A13
2008-02-14 23:20:48 C 11 28 48.75 +10 37 41.3 r A13
2008-02-14 23:43:48 C 11 28 50.45 +10 38 26.4 r A13
2008-02-15 23:39:49 C 11 30 45.42 +11 26 09.3 r A06
2008-02-15 23:44:57 C 11 30 45.83 +11 26 20.0 r A06
2008-02-15 23:50:38 C 11 30 46.25 +11 26 31.4 r A06
2008-02-19 10:28:22 C 11 37 43.78 +14 27 41.5 r H45
2008-02-19 10:29:43 C 11 37 43.89 +14 27 44.6 r H45
2008-02-19 10:33:03 C 11 37 44.18 +14 27 52.4 r H45
2008-02-19 10:37:11 C 11 37 44.52 +14 28 02.0 r H45
2008-02-19 10:39:52 C 11 37 44.74 +14 28 08.2 r H45
2008-02-20 00:20:51 C 11 39 00.31 +15 00 42.6 r J51
2008-02-20 00:27:30 C 11 39 00.87 +15 00 58.6 r J51
2008-02-20 00:34:08 C 11 39 01.42 +15 01 14.7 r J51
2008-02-22 22:32:33 C 11 45 35.95 +17 58 40.7 14.6 r B61
2008-02-25 23:40:07 C 11 53 07.10 +21 24 03.8 o A92
2008-02-25 23:45:02 C 11 53 07.52 +21 24 20.2 o A92
2008-02-25 23:53:28 C 11 53 08.51 +21 24 42.9 o A92
2008-02-26 00:15:21 C 11 53 10.64 +21 25 48.1 o A92
2008-02-28 09:12:04 C 11 59 36.21 +24 19 06.7 r H45
2008-02-28 09:13:01 C 11 59 36.32 +24 19 09.7 r H45
2008-02-28 09:33:10 C 11 59 38.52 +24 20 12.5 r H45
2008-02-28 09:35:07 C 11 59 38.74 +24 20 18.5 r H45
2008-02-28 09:36:13 C 11 59 38.85 +24 20 22.0 r H45
2008-02-29 07:48:24 C 12 02 20.25 +25 30 49.5 r 703
2008-02-29 08:01:59 C 12 02 21.76 +25 31 33.3 r 703
2008-02-29 08:13:35 C 12 02 23.06 +25 32 10.6 r 703
2008-03-01 09:31:41 C 12 05 30.46 +26 54 10.0 r H45
2008-03-01 09:33:42 C 12 05 30.70 +26 54 16.6 r H45
2008-03-01 09:35:10 C 12 05 30.87 +26 54 21.4 r H45
2008-03-01 09:36:24 C 12 05 31.02 +26 54 25.3 r H45
2008-03-01 09:37:16 C 12 05 31.12 +26 54 28.1 r H45
2008-03-05 09:14:40 C 12 18 37.86 +32 18 14.3 r H45
2008-03-05 09:15:53 C 12 18 38.03 +32 18 18.5 r H45
2008-03-05 09:18:05 C 12 18 38.33 +32 18 26.1 r H45
2008-03-05 09:19:35 C 12 18 38.54 +32 18 31.3 r H45
2008-03-08 00:12:08 C 12 28 30.03 +35 58 36.6 c J69
2008-03-08 00:14:41 C 12 28 30.44 +35 58 45.7 c J69
2008-03-08 00:17:13 C 12 28 30.84 +35 58 54.7 c J69
2008-03-11 06:12:31 C 12 42 17.64 +40 32 37.5 r 703
2008-03-11 06:19:30 C 12 42 18.90 +40 33 02.3 r 703
2008-03-11 06:26:34 C 12 42 20.12 +40 33 27.1 r 703
2008-03-11 06:33:34 C 12 42 21.38 +40 33 51.9 r 703
2008-03-20 22:59:25 C 13 36 20.43 +52 50 35.3 c J32