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
2011-12-23 21:20:06 C 06 46 05.64 +27 06 42.3 u 157
2011-12-23 21:21:25 C 06 46 06.78 +27 06 49.5 u 157
2011-12-23 21:22:37 C 06 46 07.69 +27 06 55.4 u 157
2011-12-23 21:24:02 C 06 46 08.88 +27 07 02.9 u 157
2011-12-23 21:35:28 C 06 46 20.26 +27 07 56.8 u B49
2011-12-23 21:39:05 C 06 46 23.25 +27 08 15.9 u B49
2011-12-23 21:42:50 C 06 46 26.34 +27 08 36.1 u B49
2011-12-23 23:33:23 C 06 47 55.66 +27 17 57.8 u B67
2011-12-23 23:41:03 C 06 48 02.05 +27 18 37.3 u B67
2011-12-23 23:48:44 C 06 48 08.44 +27 19 16.8 u B67
2011-12-24 08:08:51 C 06 55 33.01 +28 02 09.4 t H21
2011-12-24 08:11:09 C 06 55 35.03 +28 02 20.3 t H21
2011-12-24 08:13:41 C 06 55 37.23 +28 02 33.2 t H21
2011-12-24 08:16:59 C 06 55 40.11 +28 02 49.6 t H21
2011-12-24 08:20:17 C 06 55 42.99 +28 03 05.8 t H21
2011-12-24 08:25:21 C 06 55 47.42 +28 03 31.1 t H21
2011-12-25 07:40:02 C 07 18 55.27 +30 01 17.4 o H21
2011-12-25 07:41:56 C 07 18 57.19 +30 01 26.7 o H21
2011-12-25 07:43:50 C 07 18 59.09 +30 01 35.9 o H21
2011-12-25 07:45:44 C 07 19 01.00 +30 01 45.3 o H21
2011-12-25 07:47:55 C 07 19 03.17 +30 01 56.0 o H21
2011-12-25 07:49:49 C 07 19 05.09 +30 02 05.4 o H21
2011-12-25 07:52:16 C 07 19 07.53 +30 02 17.1 o H21
2011-12-25 07:54:08 C 07 19 09.41 +30 02 26.3 o H21
2011-12-25 07:56:32 C 07 19 11.82 +30 02 38.1 o H21
2011-12-25 23:33:47 C 07 36 38.28 +31 17 48.3 c A48
2011-12-25 23:34:33 C 07 36 39.08 +31 17 52.3 c A48
2011-12-25 23:35:19 C 07 36 39.95 +31 17 56.1 c A48
2011-12-25 23:36:04 C 07 36 40.78 +31 17 59.1 c A48
2011-12-26 11:13:35 C 07 50 12.77 +32 10 22.8 u H21
2011-12-26 11:15:57 C 07 50 19.07 +32 11 34.2 o 291
2011-12-26 11:16:27 C 07 50 19.66 +32 11 36.4 o 291
2011-12-26 11:16:55 C 07 50 20.22 +32 11 38.4 o 291
2011-12-26 11:17:08 C 07 50 16.99 +32 10 36.9 u H21
2011-12-26 11:20:35 C 07 50 21.06 +32 10 50.7 u H21
2011-12-26 11:23:53 C 07 50 24.98 +32 11 03.7 u H21
2011-12-27 23:05:09 C 08 37 30.68 +34 21 26.0 c A48
2011-12-27 23:05:55 C 08 37 31.76 +34 21 27.8 c A48
2011-12-27 23:06:41 C 08 37 32.75 +34 21 30.8 c A48
2011-12-27 23:07:27 C 08 37 33.79 +34 21 32.1 c A48
2011-12-28 01:42:14 C 08 40 59.20 +34 29 02.1 u 160
2011-12-28 01:44:32 C 08 41 02.25 +34 29 06.9 u 160
2011-12-28 01:46:51 C 08 41 05.32 +34 29 13.5 u 160
2011-12-28 01:49:07 C 08 41 08.46 +34 29 09.9 t 130
2011-12-28 01:50:17 C 08 41 10.02 +34 29 13.0 t 130
2011-12-28 01:51:04 C 08 41 11.05 +34 29 15.0 t 130
2011-12-28 01:53:25 C 08 41 14.22 +34 29 21.2 t 130
2012-01-05 11:36:13 C 12 29 23.75 +27 49 13.4 o H21
2012-01-05 11:40:02 C 12 29 26.05 +27 48 59.6 o H21
2012-01-05 11:43:50 C 12 29 28.34 +27 48 45.2 o H21
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)