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
2000-11-25 09:56:13 C 06 18 49.90 -00 25 46.7 18.7 c 704
2000-11-25 10:22:28 C 06 18 48.91 -00 25 52.5 19.0 c 704
2000-12-17 04:23:00 C 05 51 51.09 -01 22 28.1 808
2000-12-17 05:14:49 C 05 51 47.63 -01 22 26.4 808
2001-01-19 07:32:48 C 05 04 54.33 +02 29 05.2 18.7 c 608
2001-01-19 07:48:02 C 05 04 53.69 +02 29 13.2 18.9 c 608
2001-01-19 08:03:28 C 05 04 53.06 +02 29 20.7 18.7 c 608
2001-01-26 03:48:33 C 04 59 22.03 +03 55 32.4 18.6 c 704
2001-01-26 04:09:56 C 04 59 21.36 +03 55 44.7 18.7 c 704
2001-01-26 04:31:19 C 04 59 20.72 +03 55 55.8 19.6 c 704
2001-01-26 04:52:54 C 04 59 20.13 +03 56 07.6 19.1 c 704
2001-01-26 05:14:18 C 04 59 19.50 +03 56 19.1 18.7 c 704
2001-02-01 09:05:08 C 04 56 13.71 +05 19 57.0 19.5 c 608
2001-02-01 09:19:42 C 04 56 13.47 +05 20 04.9 19.2 c 608
2001-02-01 09:34:28 C 04 56 13.20 +05 20 13.8 19.4 c 608
2001-02-22 02:23:04 C 04 58 45.16 +10 16 00.6 19.0 c 704
2001-02-22 02:43:57 C 04 58 45.69 +10 16 14.2 19.1 c 704
2001-02-22 03:24:12 C 04 58 46.63 +10 16 37.0 19.3 c 704
2001-02-22 03:44:35 C 04 58 47.09 +10 16 49.3 19.5 c 704
2002-11-06 10:00:32 C 04 07 49.00 -04 40 30.0 19.6 c 644
2002-11-06 10:30:47 C 04 07 47.50 -04 40 40.1 19.9 c 644
2002-11-06 11:01:11 C 04 07 45.98 -04 40 50.3 19.4 c 644
2002-11-16 06:33:11 C 03 55 16.77 -05 47 27.6 20.0 c 644
2002-11-16 07:04:09 C 03 55 14.97 -05 47 34.6 19.6 c 644
2002-11-16 07:56:46 C 03 55 11.92 -05 47 47.0 19.9 c 644
2003-01-24 03:01:46 C 03 06 09.78 -00 58 40.3 c 809
2003-01-24 03:14:37 C 03 06 09.92 -00 58 34.6 c 809
2003-01-24 03:23:19 C 03 06 10.05 -00 58 31.0 c 809
2003-01-24 03:34:39 C 03 06 10.22 -00 58 26.2 c 809
2004-08-19 10:54:05 C 02 50 29.61 +00 49 43.0 c 711
2004-08-19 11:12:33 C 02 50 29.87 +00 49 37.3 c 711
2004-08-19 11:31:04 C 02 50 30.29 +00 49 30.8 c 711
2004-10-13 07:35:20 C 02 29 33.55 -09 05 43.1 o 699
2004-10-13 08:04:42 C 02 29 32.01 -09 05 56.3 o 699
2004-10-13 08:34:02 C 02 29 30.55 -09 06 09.1 o 699
2004-10-13 09:03:23 C 02 29 28.98 -09 06 22.9 o 699
2006-08-10 09:51:09 C 01 02 00.15 -03 45 37.9 o 644
2006-08-10 10:08:22 C 01 02 00.07 -03 45 47.7 o 644
2006-08-10 10:25:28 C 01 01 59.99 -03 45 57.3 o 644
2006-08-29 15:43:25 C 00 53 01.66 -08 41 45.7 o D35
2006-08-29 16:02:21 C 00 53 00.98 -08 41 58.5 o D35
2006-08-29 16:21:21 C 00 53 00.28 -08 42 12.3 o D35
2006-08-30 08:40:40 C 00 52 25.43 -08 53 48.9 o 704
2006-08-30 09:28:03 C 00 52 23.72 -08 54 23.1 o 704
2006-08-30 09:43:54 C 00 52 23.10 -08 54 34.5 o 704
2006-09-17 08:34:00 C 00 32 29.42 -13 55 45.7 o 699
2006-09-17 09:00:18 C 00 32 27.83 -13 56 02.6 o 699
2006-09-17 09:26:37 C 00 32 26.49 -13 56 19.4 o 699
2006-09-17 09:52:54 C 00 32 25.09 -13 56 37.7 o 699
2006-09-20 07:08:37 C 00 28 40.72 -14 40 05.4 r 703