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
2008-04-22 03:26:07 C 17 40 43.12 +62 46 55.0 P 716
2008-04-22 04:21:20 C 17 40 55.66 +62 46 28.4 P 716
2008-04-22 05:06:00 C 17 41 05.69 +62 46 06.8 P 716
2008-04-22 05:59:41 C 17 41 17.47 +62 45 40.5 P 716
2008-04-22 06:52:05 C 17 41 28.76 +62 45 14.7 P 716
2008-04-24 03:22:50 C 17 51 03.45 +62 17 17.4 P 716
2008-04-24 04:15:46 C 17 51 14.64 +62 16 47.9 P 716
2008-04-24 05:03:09 C 17 51 24.44 +62 16 21.8 P 716
2008-04-24 05:53:28 C 17 51 34.66 +62 15 54.0 P 716
2008-04-26 03:00:19 C 18 00 30.78 +61 44 54.2 P 716
2008-04-26 03:09:25 C 18 00 29.60 +61 45 19.2 c B19
2008-04-26 03:11:07 C 18 00 29.90 +61 45 18.0 c B19
2008-04-26 03:12:48 C 18 00 30.19 +61 45 16.8 c B19
2008-04-26 03:29:01 C 18 00 36.38 +61 44 36.7 P 716
2008-04-26 04:20:36 C 18 00 46.40 +61 44 05.2 P 716
2008-04-26 06:43:57 C 18 01 13.04 +61 42 37.3 P 716
2008-04-29 07:44:13 C 18 14 08.49 +60 48 15.4 r H45
2008-04-29 07:45:45 C 18 14 08.71 +60 48 14.2 r H45
2008-04-29 07:48:28 C 18 14 09.14 +60 48 12.1 r H45
2008-04-29 07:50:45 C 18 14 09.49 +60 48 10.6 r H45
2008-04-29 07:52:34 C 18 14 09.77 +60 48 09.2 r H45
2008-05-02 02:27:12 C 18 24 32.08 +59 54 24.5 c B19
2008-05-02 02:28:53 C 18 24 32.31 +59 54 23.0 c B19
2008-05-02 02:32:08 C 18 24 32.74 +59 54 20.4 c B19
2008-05-02 08:17:07 C 18 25 24.38 +59 49 31.6 16.0 c 704
2008-05-02 08:32:06 C 18 25 26.40 +59 49 19.9 16.2 c 704
2008-05-02 08:46:44 C 18 25 28.37 +59 49 08.7 16.7 c 704
2008-05-02 09:00:58 C 18 25 30.23 +59 48 57.8 16.6 c 704
2008-05-02 09:15:37 C 18 25 32.10 +59 48 45.9 16.5 c 704
2008-05-04 21:08:45 C 18 33 45.22 +58 56 58.4 c 127
2008-05-04 21:13:52 C 18 33 45.90 +58 56 54.5 c 127
2008-05-04 21:18:57 C 18 33 46.56 +58 56 50.2 c 127
2008-05-05 21:11:17 C 18 36 47.53 +58 35 40.9 c 127
2008-05-05 21:16:36 C 18 36 48.20 +58 35 36.6 c 127
2008-05-05 21:21:57 C 18 36 48.85 +58 35 32.5 c 127
2008-05-05 21:26:34 C 18 36 49.41 +58 35 28.4 c 127
2008-05-06 20:08:45 C 18 39 33.49 +58 15 01.4 o 084
2008-05-06 20:12:00 C 18 39 33.89 +58 14 58.5 o 084
2008-05-09 22:45:00 C 18 47 47.26 +57 05 44.5 c 196
2008-05-09 23:38:44 C 18 47 52.44 +57 04 56.6 c 196
2008-05-13 01:08:37 C 18 54 53.79 +55 53 28.5 c J51
2008-05-13 01:14:00 C 18 54 54.22 +55 53 23.6 c J51
2008-05-13 01:19:24 C 18 54 54.64 +55 53 18.5 c J51
2008-05-14 20:52:41 C 18 58 36.72 +55 09 04.6 c B67
2008-05-14 21:10:20 C 18 58 38.17 +55 08 48.0 c B67
2008-05-14 21:27:49 C 18 58 39.40 +55 08 31.0 c B67
2008-05-16 23:02:10 C 19 02 27.77 +54 17 18.9 o 084
2008-05-16 23:05:23 C 19 02 28.00 +54 17 15.4 o 084
2008-05-23 01:09:25 C 19 11 38.26 +51 37 34.7 o J51
2008-05-23 01:17:04 C 19 11 38.59 +51 37 26.3 o J51