2011 XD1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4535816127 ± 1.66e-07
Semi-major axis (a)1.8143031167 AU ± 5.57e-07
Inclination (i)4.19086846° ± 2.51e-06
Long. of Asc. Node (Ω)89.60583048° ± 4.28e-06
Arg. of Perihelion (ω)27.49280844° ± 9.40e-06
Mean Anomaly (M)240.21727927° ± 9.41e-04
Mean Motion (n)0.4033179084°/day ± 1.86e-07
Perihelion dist (q)0.99136858 AU ± 4.28e-07
Aphelion dist (Q)2.63723765 AU ± 8.63e-07
Orbital Period2.44379499 yr ± 1.12e-06
Physical Parameters
H (abs. magnitude)23.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.276″
Uncertainty0
Orbit TypeApollo
MOID0.023919 AU
Observations Used156
Radar Obs Used2
Oppositions1
Arc Total2011-2012
First Observation Used2011-12-01
Last Observation Used2012-02-26
Observations (159)
Date Type RA Dec Mag Band Observatory
2011-12-01 08:05:32 C 04 22 31.931 +07 48 19.45 L F51
2011-12-01 08:25:28 C 04 22 32.828 +07 48 29.22 L F51
2011-12-01 08:45:25 C 04 22 33.720 +07 48 39.12 L F51
2011-12-01 09:05:23 C 04 22 34.599 +07 48 48.87 L F51
2011-12-02 05:37:55 C 04 23 54.59 +07 58 54.6 o G51
2011-12-02 07:11:28 C 04 23 57.28 +07 59 39.6 t H21
2011-12-02 07:19:20 C 04 23 57.67 +07 59 44.0 t H21
2011-12-02 07:31:25 C 04 23 58.32 +07 59 50.3 t H21
2011-12-02 09:02:16 C 04 24 04.88 +08 00 45.0 o G51
2011-12-02 12:18:40 C 04 24 15.80 +08 02 27.3 o G51
2011-12-02 22:53:15 C 04 25 05.56 +08 08 37.3 t J04
2011-12-02 23:01:50 C 04 25 06.03 +08 08 42.6 t J04
2011-12-02 23:09:37 C 04 25 06.45 +08 08 47.1 t J04
2011-12-03 02:52:34 C 04 25 22.17 +08 12 08.5 o 807
2011-12-03 02:59:51 C 04 25 22.59 +08 12 13.3 o 807
2011-12-03 03:07:09 C 04 25 22.97 +08 12 17.4 o 807
2011-12-03 03:14:06 C 04 25 23.35 +08 12 21.6 o 807
2011-12-03 21:29:36 C 04 26 45.10 +08 22 04.2 u J95
2011-12-03 21:42:59 C 04 26 45.92 +08 22 13.1 u J95
2011-12-03 21:54:49 C 04 26 46.74 +08 22 21.3 u J95
2011-12-04 02:44:28 C 04 27 09.49 +08 27 10.7 o 807
2011-12-04 02:53:42 C 04 27 10.05 +08 27 17.1 o 807
2011-12-04 03:02:51 C 04 27 10.62 +08 27 23.5 o 807
2011-12-04 03:11:57 C 04 27 11.15 +08 27 29.5 o 807
2011-12-04 14:40:34 C 04 28 04.42 +08 35 27.2 u D90
2011-12-04 14:53:38 C 04 28 05.20 +08 35 36.8 u D90
2011-12-04 15:06:40 C 04 28 06.03 +08 35 45.7 u D90
2011-12-05 03:49:33 C 04 29 11.52 +08 44 58.7 o 807
2011-12-05 03:56:08 C 04 29 11.95 +08 45 04.0 o 807
2011-12-05 04:02:42 C 04 29 12.38 +08 45 08.7 o 807
2011-12-05 04:09:17 C 04 29 12.81 +08 45 13.8 o 807
2011-12-06 06:05:57 C 04 31 31.00 +09 05 59.9 o 807
2011-12-06 06:13:35 C 04 31 31.60 +09 06 06.6 o 807
2011-12-06 06:21:58 C 04 31 32.21 +09 06 13.2 o 807
2011-12-06 10:23:20 C 04 31 54.10 +09 08 13.1 o 291
2011-12-06 10:26:18 C 04 31 54.39 +09 08 15.7 o 291
2011-12-06 10:29:15 C 04 31 54.63 +09 08 18.1 o 291
2011-12-07 04:56:58 C 04 33 52.03 +09 25 02.6 o 291
2011-12-07 04:59:42 C 04 33 52.23 +09 25 05.1 o 291
2011-12-07 05:02:25 C 04 33 52.47 +09 25 07.6 o 291
2011-12-12 04:51:26 C 04 50 04.46 +11 55 42.3 o H21
2011-12-12 04:56:33 C 04 50 05.22 +11 55 50.6 o H21
2011-12-12 05:01:41 C 04 50 05.99 +11 55 59.0 o H21
2011-12-12 05:06:48 C 04 50 06.77 +11 56 07.2 o H21
2011-12-12 05:12:19 C 04 50 07.59 +11 56 16.4 o H21
2011-12-13 03:20:41 C 04 54 13.93 +12 36 37.2 o 807
2011-12-13 03:27:28 C 04 54 15.06 +12 36 49.7 o 807
2011-12-14 05:27:46 C 04 59 34.92 +13 27 05.0 o 807
2011-12-14 05:31:49 C 04 59 35.68 +13 27 12.9 o 807
2011-12-14 05:35:57 C 04 59 36.48 +13 27 21.4 o 807
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2011-12-23 03:50:00 70411.26 1 Hz 2380 -1 -1
2011-12-23 04:03:00 40903923.59 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)