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
2011-12-16 00:07:50 C 05 10 04.15 +15 01 06.7 v C32
2011-12-16 00:12:00 C 05 10 05.25 +15 01 16.9 v C32
2011-12-16 00:24:15 C 05 10 08.41 +15 01 46.3 v C32
2011-12-16 06:13:08 C 05 11 51.21 +15 16 51.7 u H36
2011-12-16 06:16:31 C 05 11 52.04 +15 17 00.5 u H36
2011-12-16 06:19:56 C 05 11 52.95 +15 17 08.8 u H36
2011-12-16 06:23:28 C 05 11 53.82 +15 17 17.8 u H36
2011-12-16 06:26:53 C 05 11 54.70 +15 17 26.8 u H36
2011-12-16 09:11:26 C 05 12 38.37 +15 24 41.7 r 703
2011-12-16 09:17:52 C 05 12 39.99 +15 24 58.8 r 703
2011-12-16 09:24:23 C 05 12 41.72 +15 25 15.0 r 703
2011-12-17 23:12:34 C 05 25 01.01 +17 13 13.9 o J13
2011-12-17 23:13:17 C 05 25 01.24 +17 13 16.0 o J13
2011-12-17 23:13:58 C 05 25 01.46 +17 13 18.4 o J13
2011-12-17 23:14:40 C 05 25 01.67 +17 13 20.3 o J13
2011-12-18 06:10:49 C 05 27 31.20 +17 35 07.7 u 448
2011-12-18 06:14:17 C 05 27 32.34 +17 35 18.7 u 448
2011-12-18 06:18:11 C 05 27 33.61 +17 35 31.6 u 448
2011-12-18 08:01:58 C 05 28 08.36 +17 41 01.0 18.6 c 704
2011-12-18 08:20:54 C 05 28 14.77 +17 42 00.8 18.5 c 704
2011-12-18 08:58:32 C 05 28 27.66 +17 44 00.2 19.0 c 704
2011-12-18 09:17:21 C 05 28 34.16 +17 44 57.0 19.3 c 704
2011-12-19 01:39:02 C 05 35 05.40 +18 39 40.3 t 204
2011-12-19 01:52:07 C 05 35 10.51 +18 40 24.7 t 204
2011-12-19 01:56:44 C 05 35 12.31 +18 40 40.7 t 204
2011-12-21 21:44:55 C 06 10 33.37 +23 14 54.4 c A48
2011-12-21 21:49:39 C 06 10 36.19 +23 15 16.5 c A48
2011-12-21 21:54:24 C 06 10 39.01 +23 15 38.9 c A48
2011-12-21 21:59:08 C 06 10 41.85 +23 16 00.9 c A48
2011-12-22 05:07:15 C 06 15 26.65 +23 49 11.3 t G58
2011-12-22 05:11:06 C 06 15 29.10 +23 49 30.1 t G58
2011-12-22 05:14:39 C 06 15 31.36 +23 49 47.3 t G58
2011-12-22 22:10:16 C 06 27 25.06 +25 10 47.5 c A53
2011-12-22 22:14:19 C 06 27 27.91 +25 11 08.0 c A53
2011-12-22 22:18:27 C 06 27 30.77 +25 11 29.2 c A53
2011-12-22 22:22:35 C 06 27 33.73 +25 11 49.4 c A53
2011-12-22 22:26:45 C 06 27 36.65 +25 12 10.2 c A53
2011-12-23 00:23:53 C 06 28 59.19 +25 21 48.1 c A48
2011-12-23 00:24:39 C 06 28 59.69 +25 21 51.7 c A48
2011-12-23 00:25:24 C 06 29 00.30 +25 21 55.3 c A48
2011-12-23 00:26:10 C 06 29 00.79 +25 21 58.8 c A48
2011-12-23 06:57:34 C 06 33 59.33 +25 58 20.6 o 807
2011-12-23 06:59:20 C 06 34 00.64 +25 58 29.2 o 807
2011-12-23 07:03:04 C 06 34 03.38 +25 58 47.0 o 807
2011-12-23 07:06:50 C 06 34 06.15 +25 59 05.4 o 807
2011-12-23 07:13:54 C 06 34 11.37 +25 59 39.4 o 807
2011-12-23 07:15:51 C 06 34 12.81 +25 59 48.8 o 807
2011-12-23 21:02:43 C 06 45 53.95 +27 05 00.7 w I99
2011-12-23 21:07:49 C 06 45 58.07 +27 05 27.2 w I99
2011-12-23 21:12:55 C 06 46 02.36 +27 05 55.6 w I99
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)