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
2011-12-29 10:00:28 C 07 07 54.76 +61 26 37.8 r 703
2011-12-29 10:06:57 C 07 07 55.09 +61 26 32.9 r 703
2011-12-29 10:13:29 C 07 07 55.52 +61 26 29.3 r 703
2011-12-29 10:19:58 C 07 07 55.74 +61 26 24.1 r 703
2011-12-29 11:00:04 C 07 07 57.89 +61 25 56.4 o 291
2011-12-29 11:05:17 C 07 07 58.16 +61 25 52.5 o 291
2011-12-29 11:10:28 C 07 07 58.44 +61 25 48.6 o 291
2011-12-29 11:13:28 C 07 07 58.48 +61 25 46.1 r 703
2011-12-29 11:15:23 C 07 07 58.62 +61 25 44.4 r 703
2011-12-29 11:17:19 C 07 07 58.80 +61 25 43.1 r 703
2011-12-29 11:19:20 C 07 07 58.80 +61 25 40.0 r 703
2011-12-29 20:05:40 C 07 09 00.63 +61 20 19.3 t 204
2011-12-29 20:22:01 C 07 09 01.77 +61 20 13.0 t 204
2011-12-29 20:38:46 C 07 09 02.89 +61 20 06.2 t 204
2011-12-29 23:43:21 C 07 09 14.68 +61 18 25.4 u J95
2011-12-29 23:46:35 C 07 09 14.89 +61 18 23.5 u J95
2011-12-29 23:49:47 C 07 09 15.05 +61 18 21.9 u J95
2011-12-30 04:04:42 C 07 09 45.52 +61 15 42.9 o G48
2011-12-30 04:08:23 C 07 09 45.81 +61 15 41.6 o G48
2011-12-30 04:12:01 C 07 09 45.96 +61 15 39.7 o G48
2011-12-31 01:14:43 C 07 11 33.47 +61 01 04.9 u 595
2011-12-31 01:24:32 C 07 11 34.15 +61 00 56.2 u 595
2011-12-31 10:16:13 C 07 12 25.16 +60 54 10.1 r 703
2011-12-31 10:20:51 C 07 12 25.23 +60 54 05.9 r 703
2011-12-31 10:25:28 C 07 12 25.59 +60 54 01.1 r 703
2011-12-31 10:30:06 C 07 12 25.84 +60 53 56.1 r 703
2011-12-31 12:53:35 C 07 12 54.86 +60 51 52.3 u 900
2011-12-31 13:01:18 C 07 12 55.30 +60 51 47.4 u 900
2012-01-01 07:06:31 C 07 14 42.27 +60 35 31.0 t H21
2012-01-01 07:08:08 C 07 14 42.41 +60 35 29.2 t H21
2012-01-01 07:10:22 C 07 14 42.52 +60 35 27.3 t H21
2012-01-01 07:13:08 C 07 14 42.68 +60 35 24.8 t H21
2012-01-01 07:14:59 C 07 14 42.80 +60 35 22.8 t H21
2012-01-01 07:17:04 C 07 14 42.93 +60 35 20.5 t H21
2012-01-02 08:18:35 C 07 17 34.83 +60 08 18.1 u H45
2012-01-02 08:20:29 C 07 17 34.96 +60 08 16.0 u H45
2012-01-02 08:22:33 C 07 17 35.18 +60 08 12.9 u H45
2012-01-02 08:24:33 C 07 17 35.28 +60 08 10.4 u H45
2012-01-02 08:28:26 C 07 17 35.56 +60 08 05.7 u H45
2012-01-02 08:29:44 C 07 17 35.64 +60 08 03.2 u H45
2012-01-02 08:33:12 C 07 17 35.89 +60 07 58.7 u H45
2012-01-03 07:25:24 C 07 20 34.18 +59 37 52.5 t H21
2012-01-03 07:29:02 C 07 20 34.50 +59 37 46.9 t H21
2012-01-03 07:33:24 C 07 20 34.87 +59 37 40.1 t H21
2012-01-03 07:37:05 C 07 20 35.19 +59 37 34.3 t H21
2012-01-03 17:02:29 C 07 22 07.88 +59 22 30.9 v C32
2012-01-03 17:06:26 C 07 22 08.39 +59 22 25.7 v C32
2012-01-03 17:10:13 C 07 22 08.86 +59 22 21.4 v C32
2012-01-03 17:14:09 C 07 22 09.30 +59 22 16.0 v C32
2012-01-03 22:19:01 C 07 22 52.92 +59 14 53.4 o J13
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)