2015 LQ21

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5497695091 ± 3.40e-07
Semi-major axis (a)2.2471970579 AU ± 1.47e-06
Inclination (i)1.43191191° ± 2.09e-06
Long. of Asc. Node (Ω)159.58865791° ± 2.67e-04
Arg. of Perihelion (ω)90.24741563° ± 2.80e-04
Mean Anomaly (M)35.68879534° ± 1.17e-03
Mean Motion (n)0.2925839776°/day ± 2.87e-07
Perihelion dist (q)1.01175663 AU ± 1.01e-06
Aphelion dist (Q)3.48263748 AU ± 2.40e-06
Orbital Period3.36869534 yr ± 3.30e-06
Physical Parameters
H (abs. magnitude)24.49
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.300″
Uncertainty1
Orbit TypeApollo
MOID0.024987 AU
Observations Used105
Radar Obs Used3
Oppositions1
Arc Total2015-2015
First Observation Used2015-06-14
Last Observation Used2015-07-18
Observations (116)
Date Type RA Dec Mag Band Observatory
2015-06-22 04:51:08 C 18 06 52.79 +17 58 40.2 o 926
2015-06-22 04:54:02 C 18 06 55.63 +17 58 19.9 o 926
2015-06-22 04:56:54 C 18 06 58.38 +17 58 01.0 o 926
2015-06-22 08:34:49 C 18 10 24.74 +17 32 44.1 o 926
2015-06-22 08:37:40 C 18 10 27.39 +17 32 22.7 o 926
2015-06-22 08:40:31 C 18 10 30.05 +17 32 02.6 o 926
2015-06-22 11:00:29 C 18 12 41.29 +17 15 25.2 o 926
2015-06-22 11:03:21 C 18 12 43.95 +17 15 04.8 o 926
2015-06-22 11:06:11 C 18 12 46.67 +17 14 44.6 o 926
2015-06-28 06:50:13 C 19 44 29.13 +04 28 56.1 u H21
2015-06-28 06:54:55 C 19 44 30.92 +04 28 37.5 u H21
2015-06-28 06:58:50 C 19 44 32.38 +04 28 22.6 u H21
2015-06-28 07:01:47 C 19 44 33.49 +04 28 10.8 u H21
2015-07-18 05:15:48 C 20 56 34.45 -09 18 32.3 u 807
2015-07-18 05:25:23 C 20 56 34.72 -09 18 40.0 u 807
2015-07-18 05:35:12 C 20 56 35.00 -09 18 47.4 u 807
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2015-06-19 02:30:00 -4104.1569 0.2 Hz 2380 -1 -1
2015-06-19 02:50:00 33242143.74 4 us 2380 -1 -1
2015-06-19 03:50:00 33251220.19 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)