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
2017-08-04 09:19:30 C 17 49 32.34 -03 09 09.1 L T05
2017-08-04 09:32:26 C 17 49 33.27 -03 09 33.3 L T05
2017-08-04 09:47:16 C 17 49 34.35 -03 10 01.1 L T05
2017-08-06 21:36:42 C 17 54 11.55 -04 59 20.5 U Z80
2017-08-06 21:40:07 C 17 54 11.75 -04 59 26.6 U Z80
2017-08-06 21:43:31 C 17 54 12.02 -04 59 32.0 U Z80
2017-08-06 21:46:55 C 17 54 12.28 -04 59 38.2 U Z80
2017-08-06 21:50:20 C 17 54 12.54 -04 59 44.2 U Z80
2017-08-06 21:53:45 C 17 54 12.78 -04 59 50.3 U Z80
2017-08-06 21:57:22 C 17 54 13.12 -04 59 55.8 q Z38
2017-08-06 22:37:50 C 17 54 16.11 -05 01 05.7 q Z38
2017-08-06 23:18:30 C 17 54 18.99 -05 02 17.0 q Z38
2017-08-07 10:01:01 C 17 55 08.29 -05 20 57.1 L T08
2017-08-07 10:06:38 C 17 55 08.75 -05 21 05.6 L T08
2017-08-07 10:12:58 C 17 55 09.17 -05 21 16.9 L T08
2017-08-07 10:24:53 C 17 55 10.08 -05 21 37.9 L T08
2017-08-07 10:30:29 C 17 55 10.45 -05 21 47.5 L T08
2017-08-07 21:26:13 C 17 56 01.66 -05 40 46.7 q 160
2017-08-07 21:28:59 C 17 56 01.86 -05 40 51.3 q 160
2017-08-07 21:31:45 C 17 56 02.06 -05 40 56.0 q 160
2017-08-08 18:39:24 C 17 57 40.22 -06 16 43.8 q B34
2017-08-08 19:27:52 C 17 57 43.78 -06 18 04.7 q B34
2017-08-08 20:26:24 C 17 57 48.07 -06 19 43.0 q B34
2017-08-09 04:07:28 C 17 58 23.75 -06 32 31.1 u H21
2017-08-09 04:09:33 C 17 58 23.90 -06 32 34.5 u H21
2017-08-09 04:11:37 C 17 58 24.06 -06 32 37.7 u H21
2017-08-09 04:21:57 C 17 58 24.82 -06 32 55.1 u H21
2017-08-09 04:24:01 C 17 58 24.98 -06 32 58.2 u H21
2017-08-09 04:26:05 C 17 58 25.12 -06 33 01.9 u H21
2017-08-09 04:28:09 C 17 58 25.27 -06 33 05.2 u H21
2017-08-09 04:30:13 C 17 58 25.43 -06 33 08.7 u H21
2017-08-09 04:40:21 C 17 58 26.18 -06 33 25.2 u H21
2017-08-10 03:26:18 C 18 00 12.03 -07 10 35.9 u H21
2017-08-10 03:29:12 C 18 00 12.24 -07 10 40.7 u H21
2017-08-10 03:32:18 C 18 00 12.45 -07 10 45.8 u H21
2017-08-10 03:35:23 C 18 00 12.69 -07 10 50.5 u H21
2017-08-10 03:38:29 C 18 00 12.94 -07 10 55.5 u H21
2017-08-10 03:41:24 C 18 00 13.15 -07 11 00.6 u H21
2017-08-17 08:40:58 C 18 13 39.40 -11 21 58.4 L T05
2017-08-17 08:54:14 C 18 13 40.38 -11 22 15.5 L T05
2017-08-17 09:06:53 C 18 13 41.30 -11 22 31.8 L T05
2017-08-17 09:20:32 C 18 13 42.34 -11 22 49.4 L T05
2017-09-11 07:36:53 C 19 01 45.12 -20 08 39.5 L T08
2017-09-11 07:48:10 C 19 01 46.06 -20 08 45.8 L T08
2017-09-11 07:59:27 C 19 01 46.92 -20 08 51.7 L T08
2017-09-11 08:10:45 C 19 01 47.81 -20 08 57.6 L T08
2017-09-21 07:08:46 C 19 21 32.68 -21 52 46.4 L T05
2017-09-21 07:19:22 C 19 21 33.54 -21 52 50.3 L T05
2017-09-21 07:26:03 C 19 21 34.03 -21 52 51.8 L T05
2017-09-21 07:31:19 C 19 21 34.55 -21 52 55.2 L T05