285331 (1999 FN53)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4558677270 ± 5.75e-09
Semi-major axis (a)1.7355659522 AU ± 4.67e-10
Inclination (i)20.16274011° ± 2.56e-06
Long. of Asc. Node (Ω)50.56531403° ± 4.48e-06
Arg. of Perihelion (ω)191.74306064° ± 4.98e-06
Mean Anomaly (M)213.21829083° ± 1.65e-06
Mean Motion (n)0.4310727734°/day ± 1.74e-10
Perihelion dist (q)0.94437745 AU ± 9.98e-09
Aphelion dist (Q)2.52675446 AU ± 1.00e-08
Orbital Period2.28644986 yr ± 9.23e-10
Physical Parameters
H (abs. magnitude)18.19
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.220″
Uncertainty0
Orbit TypeApollo
MOID0.058380 AU
Observations Used467
Radar Obs Used4
Oppositions1
Arc Total1999-1999
First Observation Used1999-03-31
Last Observation Used2026-01-08
Observations (542)
Date Type RA Dec Mag Band Observatory
2015-03-10 13:04:35 C 13 18 53.906 +64 46 26.27 L F51
2015-03-10 13:23:45 C 13 18 53.525 +64 46 45.35 L F51
2015-03-22 18:02:36 C 13 08 08.24 +69 18 21.3 o C94
2015-03-22 18:14:37 C 13 08 07.37 +69 18 31.5 o C94
2015-03-22 18:26:21 C 13 08 06.34 +69 18 41.5 o C94
2015-03-27 11:18:02 C 12 58 05.71 +70 48 08.8 t F65
2015-03-27 11:36:57 C 12 58 03.32 +70 48 22.6 t F65
2015-03-27 12:09:23 C 12 57 59.19 +70 48 46.2 t F65
2015-03-27 12:32:05 C 12 57 56.36 +70 49 02.4 t F65
2015-03-27 12:54:47 C 12 57 53.46 +70 49 18.3 t F65
2015-03-27 13:25:03 C 12 57 49.68 +70 49 39.1 t F65
2015-03-27 13:43:59 C 12 57 47.38 +70 49 52.1 t F65
2015-04-01 06:47:45 C 12 43 27.96 +72 08 24.1 q H21
2015-04-01 06:51:04 C 12 43 27.42 +72 08 26.0 q H21
2015-04-01 06:54:23 C 12 43 26.85 +72 08 28.3 q H21
2015-04-01 06:57:34 C 12 43 26.32 +72 08 30.3 q H21
2015-04-01 07:00:45 C 12 43 25.80 +72 08 32.0 q H21
2015-04-01 07:04:03 C 12 43 25.23 +72 08 34.3 q H21
2015-04-01 07:07:21 C 12 43 24.69 +72 08 36.3 q H21
2015-04-05 05:40:35 C 12 27 26.84 +73 05 11.3 q H21
2015-04-05 05:52:17 C 12 27 24.26 +73 05 17.5 q H21
2015-04-05 05:58:50 C 12 27 22.87 +73 05 20.9 q H21
2015-04-05 06:05:32 C 12 27 21.42 +73 05 24.8 q H21
2015-04-05 06:12:14 C 12 27 20.00 +73 05 28.2 q H21
2015-04-05 06:18:48 C 12 27 18.59 +73 05 31.7 q H21
2015-04-05 06:25:22 C 12 27 17.24 +73 05 35.0 q H21
2015-04-06 07:35:38 C 12 22 18.73 +73 19 08.6 o 926
2015-04-06 07:56:30 C 12 22 13.94 +73 19 18.4 o 926
2015-04-06 08:18:11 C 12 22 08.96 +73 19 28.8 o 926
2015-04-09 21:29:26 C 12 02 44.72 +73 59 24.4 q K38
2015-04-09 21:50:15 C 12 02 38.91 +73 59 33.3 q K38
2015-04-09 22:11:03 C 12 02 33.09 +73 59 42.3 q K38
2015-04-11 01:52:16 C 11 55 11.08 +74 10 23.7 q C23
2015-04-11 01:56:35 C 11 55 09.73 +74 10 25.1 q C23
2015-04-11 02:01:58 C 11 55 08.14 +74 10 26.9 q C23
2015-04-11 02:07:22 C 11 55 06.69 +74 10 28.5 q C23
2015-04-12 08:12:34 C 11 46 33.46 +74 20 58.0 q H21
2015-04-12 08:18:15 C 11 46 31.67 +74 20 59.6 q H21
2015-04-12 08:23:55 C 11 46 29.97 +74 21 00.7 q H21
2015-04-12 22:55:24 C 11 42 12.72 +74 25 38.9 t K38
2015-04-12 23:16:34 C 11 42 05.70 +74 25 44.2 t K38
2015-04-12 23:37:31 C 11 41 58.77 +74 25 49.6 t K38
2015-04-12 23:58:28 C 11 41 51.89 +74 25 54.5 t K38
2015-04-13 00:19:25 C 11 41 45.02 +74 25 59.4 t K38
2015-04-13 20:13:24 C 11 35 36.48 +74 31 26.2 q C23
2015-04-13 20:16:38 C 11 35 35.22 +74 31 27.8 q C23
2015-04-13 20:18:15 C 11 35 34.62 +74 31 27.3 q C23
2015-04-13 20:22:59 C 11 35 33.10 +74 31 29.4 q C23
2015-04-14 02:52:56 S 11 33 26.26 +74 32 40.9 L C51
2015-04-14 04:27:22 S 11 32 55.32 +74 33 03.7 L C51
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
1999-05-10 23:10:00 103630 20 Hz 8560 -14 -14
1999-05-11 16:13:00 12518.2 2 Hz 2380 -1 -1
1999-05-12 00:00:00 -12302 10 Hz 8560 -14 -14
1999-05-12 16:14:00 59388882 10 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)