2011 YH40

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3277306201 ± 2.39e-07
Semi-major axis (a)1.3972868616 AU ± 4.88e-07
Inclination (i)11.33655656° ± 7.17e-06
Long. of Asc. Node (Ω)294.19772010° ± 8.83e-07
Arg. of Perihelion (ω)220.93110268° ± 1.02e-05
Mean Anomaly (M)118.01053457° ± 1.57e-03
Mean Motion (n)0.5967383002°/day ± 3.12e-07
Perihelion dist (q)0.93935317 AU ± 4.68e-07
Aphelion dist (Q)1.85522055 AU ± 7.29e-07
Orbital Period1.65168933 yr ± 8.65e-07
Physical Parameters
H (abs. magnitude)22.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.254″
Uncertainty1
Orbit TypeApollo
MOID0.011860 AU
Observations Used390
Radar Obs Used3
Oppositions1
Arc Total2011-2012
First Observation Used2011-12-29
Last Observation Used2012-01-26
Observations (396)
Date Type RA Dec Mag Band Observatory
2012-01-16 06:04:01 C 09 13 08.68 -04 49 54.1 r H21
2012-01-16 06:05:06 C 09 13 09.91 -04 49 35.8 u H23
2012-01-16 06:05:21 C 09 13 09.65 -04 51 02.3 r H21
2012-01-16 06:06:40 C 09 13 10.65 -04 52 10.9 r H21
2012-01-16 06:07:58 C 09 13 11.64 -04 53 18.6 r H21
2012-01-16 06:09:18 C 09 13 12.63 -04 54 27.3 r H21
2012-01-16 06:10:54 C 09 13 13.84 -04 55 50.2 r H21
2012-01-16 06:13:14 C 09 13 15.59 -04 57 51.0 r H21
2012-01-16 06:14:28 C 09 13 16.52 -04 58 54.9 r H21
2012-01-16 06:15:48 C 09 13 17.51 -05 00 03.7 r H21
2012-01-16 06:17:08 C 09 13 18.51 -05 01 12.9 r H21
2012-01-16 06:18:18 C 09 13 19.40 -05 02 14.0 r H21
2012-01-16 06:19:30 C 09 13 20.28 -05 03 15.9 r H21
2012-01-16 06:20:48 C 09 13 21.52 -05 03 11.7 u H23
2012-01-17 01:17:03 C 09 31 16.57 -21 45 48.1 u 160
2012-01-17 01:18:09 C 09 31 18.77 -21 46 55.7 t 204
2012-01-17 01:18:59 C 09 31 18.28 -21 47 29.9 u 160
2012-01-17 01:19:13 C 09 31 19.72 -21 47 51.4 t 204
2012-01-17 01:19:33 C 09 31 18.82 -21 47 58.9 u 160
2012-01-17 01:20:16 C 09 31 20.66 -21 48 46.3 t 204
2012-01-17 01:20:37 C 09 31 19.72 -21 48 54.5 u 160
2012-01-17 01:22:16 C 09 31 21.30 -21 50 20.2 u 160
2012-01-17 01:22:30 C 09 31 22.65 -21 50 43.1 t 204
2012-01-17 01:23:27 C 09 31 23.49 -21 51 32.2 t 204
2012-01-17 02:15:32 C 09 32 16.24 -22 37 07.6 u J95
2012-01-17 02:18:57 C 09 32 19.36 -22 40 04.8 u J95
2012-01-17 02:22:37 C 09 32 22.74 -22 43 15.6 u J95
2012-01-17 03:54:32 C 09 34 27.78 -23 50 29.0 o 807
2012-01-17 03:55:40 C 09 34 28.82 -23 51 27.7 o 807
2012-01-17 03:56:57 C 09 34 30.02 -23 52 35.4 o 807
2012-01-17 03:59:23 C 09 34 32.25 -23 54 41.9 o 807
2012-01-17 04:01:48 C 09 34 34.48 -23 56 47.9 o 807
2012-01-17 04:04:14 C 09 34 36.71 -23 58 55.3 o 807
2012-01-17 04:06:28 C 09 34 38.77 -24 00 51.6 o 807
2012-01-22 08:36:42 C 12 51 21.46 -72 59 54.2 o 807
2012-01-22 08:40:30 C 12 51 27.66 -73 00 15.6 o 807
2012-01-22 08:44:19 C 12 51 33.95 -73 00 36.5 o 807
2012-01-22 08:48:04 C 12 51 40.08 -73 00 57.3 o 807
2012-01-22 08:51:47 C 12 51 46.16 -73 01 17.4 o 807
2012-01-22 08:56:26 C 12 51 53.78 -73 01 42.9 o 807
2012-01-22 09:00:47 C 12 52 00.91 -73 02 06.5 o 807
2012-01-26 08:33:37 C 15 14 36.16 -75 47 55.3 o 807
2012-01-26 08:39:13 C 15 14 41.38 -75 47 57.3 o 807
2012-01-26 08:44:57 C 15 14 46.72 -75 47 59.0 o 807
2012-01-26 08:50:27 C 15 14 51.83 -75 48 00.6 o 807
2012-01-26 08:55:58 C 15 14 56.91 -75 48 02.0 o 807
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-01-15 04:30:00 286319.583 4 Hz 8560 -14 -14
2012-01-15 04:50:00 283841.666 1 Hz 8560 -14 -14
2012-01-15 05:20:00 15872483.07 10 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)