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
2012-01-06 10:29:28 C 12 43 17.78 +26 27 32.8 o H21
2012-01-06 10:35:05 C 12 43 20.70 +26 27 13.7 o H21
2012-01-06 10:40:02 C 12 43 23.25 +26 26 57.0 o H21
2012-02-17 10:56:33 C 14 39 22.16 +09 19 32.3 o H21
2012-02-17 11:14:38 C 14 39 21.82 +09 19 29.4 o H21
2012-02-17 11:35:16 C 14 39 21.44 +09 19 25.9 o H21
2012-02-26 10:09:19 C 14 34 59.50 +08 52 24.7 o H21
2012-02-26 10:28:42 C 14 34 58.71 +08 52 23.5 o H21
2012-02-26 10:51:37 C 14 34 57.78 +08 52 21.3 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)