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
1983-01-05 13:06:29 06 15 02.73 +00 36 01.6 413
1983-01-05 14:01:29 06 14 58.45 +00 36 20.7 413
1990-07-22 10:09:29 21 56 19.67 +00 10 31.2 675
1990-07-22 10:50:45 21 56 17.80 +00 09 37.5 675
1990-07-23 10:28:14 21 55 14.35 -00 21 02.4 675
1990-07-23 11:12:00 21 55 12.30 -00 21 58.6 675
1990-07-26 08:46:00 21 51 55.95 -01 53 49.4 675
1990-07-26 10:16:00 21 51 51.34 -01 55 50.1 675
1998-12-23 09:55:26 C 10 46 52.72 -01 51 06.2 18.5 a 704
1998-12-23 10:10:37 C 10 46 54.08 -01 51 08.7 19.3 a 704
1998-12-23 10:25:45 C 10 46 55.44 -01 51 11.2 18.3 a 704
1998-12-23 10:40:51 C 10 46 56.94 -01 51 16.0 19.0 a 704
1998-12-23 10:55:56 C 10 46 58.14 -01 51 19.5 18.7 a 704
1998-12-24 02:17:01 C 10 48 22.09 -01 54 53.1 046
1998-12-24 02:17:11 C 10 48 22.05 -01 54 53.5 557
1998-12-24 02:18:55 C 10 48 22.26 -01 54 53.5 046
1998-12-24 02:20:28 C 10 48 22.38 -01 54 53.4 046
1998-12-24 02:20:31 C 10 48 22.42 -01 54 54.4 557
1998-12-24 02:22:00 C 10 48 22.54 -01 54 54.3 046
1998-12-24 02:23:46 C 10 48 22.71 -01 54 54.2 046
1998-12-24 02:23:53 C 10 48 22.71 -01 54 54.7 557
1998-12-24 02:25:20 C 10 48 22.83 -01 54 54.7 046
1998-12-25 16:53:18 C 10 51 54.60 -02 03 09.8 422
1998-12-25 16:54:32 C 10 51 54.72 -02 03 10.3 422
1998-12-25 16:55:44 C 10 51 54.82 -02 03 09.9 422
1998-12-25 17:01:59 C 10 51 55.40 -02 03 11.6 422
1998-12-27 18:20:17 C 10 56 30.29 -02 13 23.9 z 402
1998-12-27 18:22:16 C 10 56 30.48 -02 13 24.4 z 402
1998-12-27 18:24:16 C 10 56 30.64 -02 13 24.7 z 402
1998-12-27 18:26:16 C 10 56 30.83 -02 13 25.3 z 402
1998-12-28 17:32:51 C 10 58 41.24 -02 17 45.8 z 402
1998-12-28 17:34:50 C 10 58 41.41 -02 17 46.0 z 402
1998-12-28 17:36:50 C 10 58 41.59 -02 17 46.9 z 402
1998-12-28 17:38:50 C 10 58 41.80 -02 17 47.1 z 402
1998-12-29 02:59:33 C 10 59 34.61 -02 19 30.5 557
1998-12-29 03:02:53 C 10 59 34.89 -02 19 30.8 557
1998-12-29 03:06:14 C 10 59 35.21 -02 19 32.1 557
1999-01-04 08:02:13 C 11 14 04.221 -02 40 37.43 l I02
1999-01-12 14:22:03 C 11 34 49.35 -02 48 39.3 422
1999-01-12 14:24:00 C 11 34 49.56 -02 48 40.0 422
1999-01-12 14:25:29 C 11 34 49.73 -02 48 39.6 422
1999-01-16 16:49:07 C 11 45 54.43 -02 41 26.7 b 426
1999-01-16 16:59:59 C 11 45 55.65 -02 41 25.3 b 426
1999-01-16 17:10:25 C 11 45 56.83 -02 41 24.2 b 426
1999-01-17 18:51:55 C 11 48 56.24 -02 38 21.0 z 402
1999-01-17 18:53:55 C 11 48 56.50 -02 38 20.5 z 402
1999-01-17 18:55:55 C 11 48 56.70 -02 38 20.5 z 402
1999-01-19 03:19:22 C 11 52 47.38 -02 33 14.0 z 104
1999-01-19 03:22:01 C 11 52 47.71 -02 33 13.6 z 104
1999-01-19 03:24:41 C 11 52 47.99 -02 33 13.1 z 104