2015 LR21

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5679933000
Semi-major axis (a)1.9047742000 AU
Inclination (i)1.88697000°
Long. of Asc. Node (Ω)86.31901000°
Arg. of Perihelion (ω)243.38080000°
Mean Anomaly (M)331.12493000°
Mean Motion (n)0.3749202000°/day
Perihelion dist (q)0.82287520 AU
Aphelion dist (Q)2.98667320 AU
Orbital Period2.62884660 yr
Physical Parameters
H (abs. magnitude)26.60
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.450″
Uncertainty2
Orbit TypeApollo
MOID0.000934 AU
Observations Used52
Radar Obs Used2
Oppositions1
Arc Total
First Observation Used
Last Observation Used2015-06-20
Observations (52)
Date Type RA Dec Mag Band Observatory
2015-06-11 08:44:05 C 16 20 24.036 -17 44 35.83 L F51
2015-06-11 09:18:53 C 16 20 19.000 -17 44 34.85 L F51
2015-06-11 09:36:16 C 16 20 16.511 -17 44 34.36 L F51
2015-06-15 05:35:03 C 16 03 01.26 -17 39 46.1 q G96
2015-06-15 05:45:18 C 16 02 57.38 -17 39 45.0 q G96
2015-06-15 05:55:34 C 16 02 53.46 -17 39 43.6 q G96
2015-06-15 06:09:50 C 16 02 47.98 -17 39 41.8 q G96
2015-06-15 07:22:34 C 16 02 19.98 -17 39 28.0 q I52
2015-06-15 07:23:40 C 16 02 19.47 -17 39 28.5 q I52
2015-06-15 07:24:48 C 16 02 19.09 -17 39 27.7 q I52
2015-06-15 07:55:31 C 16 02 07.30 -17 39 19.5 o 291
2015-06-15 07:56:27 C 16 02 06.93 -17 39 19.3 o 291
2015-06-15 07:57:23 C 16 02 06.59 -17 39 18.9 o 291
2015-06-15 13:06:24 C 16 00 18.97 -17 33 58.5 t 474
2015-06-15 13:08:07 C 16 00 18.30 -17 33 58.0 t 474
2015-06-15 13:09:51 C 16 00 17.59 -17 33 57.5 t 474
2015-06-15 13:11:34 C 16 00 16.89 -17 33 56.9 t 474
2015-06-15 21:46:04 C 15 56 59.27 -17 37 41.3 20.5 q 104
2015-06-15 21:56:40 C 15 56 54.18 -17 37 38.3 20.1 q 104
2015-06-15 22:04:37 C 15 56 50.30 -17 37 37.7 20.5 q 104
2015-06-16 13:23:08 C 15 49 05.30 -17 26 56.6 t 474
2015-06-16 13:24:26 C 15 49 04.45 -17 26 56.1 t 474
2015-06-16 13:25:45 C 15 49 03.64 -17 26 55.4 t 474
2015-06-16 13:27:03 C 15 49 02.80 -17 26 54.4 t 474
2015-06-16 13:28:22 C 15 49 02.03 -17 26 53.6 t 474
2015-06-17 05:22:30 C 15 38 06.10 -17 25 09.0 o 926
2015-06-17 05:25:50 C 15 38 03.01 -17 25 06.9 o 926
2015-06-17 05:29:11 C 15 37 59.88 -17 25 04.7 o 926
2015-06-18 05:11:45 C 15 09 41.00 -16 55 09.5 U 654
2015-06-18 05:40:39 C 15 08 47.91 -16 54 03.3 U 654
2015-06-18 06:10:38 C 15 07 51.87 -16 52 50.2 U 654
2015-06-18 06:40:42 C 15 06 54.89 -16 51 32.3 U 654
2015-06-18 07:02:21 C 15 06 09.70 -16 50 08.5 o 926
2015-06-18 07:06:12 C 15 06 02.24 -16 49 58.3 o 926
2015-06-18 07:10:05 C 15 05 54.84 -16 49 46.8 o 926
2015-06-18 07:11:45 C 15 05 55.15 -16 50 07.9 U 654
2015-06-19 05:01:39 C 14 02 46.22 -14 46 17.6 U 654
2015-06-19 05:13:44 C 14 01 43.00 -14 43 19.6 o 926
2015-06-19 05:15:50 C 14 01 33.03 -14 42 54.8 o 926
2015-06-19 05:17:58 C 14 01 22.79 -14 42 29.0 o 926
2015-06-19 05:20:11 C 14 01 12.26 -14 42 02.5 o 926
2015-06-19 05:22:23 C 14 01 01.78 -14 41 36.3 o 926
2015-06-19 05:24:48 C 14 00 50.16 -14 41 07.3 o 926
2015-06-19 05:26:49 C 14 00 40.41 -14 40 42.4 o 926
2015-06-19 05:28:51 C 14 00 30.65 -14 40 17.5 o 926
2015-06-19 05:30:44 C 14 00 27.40 -14 40 33.3 U 654
2015-06-19 06:00:37 C 13 58 01.73 -14 34 22.7 U 654
2015-06-19 06:30:38 C 13 55 32.31 -14 27 52.7 U 654
2015-06-19 07:00:57 C 13 52 58.44 -14 21 00.2 U 654
2015-06-20 03:50:58 C 11 04 51.79 -03 33 22.1 o 926
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2015-06-20 19:37:00 -123462.7531 4 Hz 2380 -1 -1
2015-06-20 19:48:00 7879697.18 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)