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
2015-04-14 06:01:59 S 11 32 24.14 +74 33 25.8 L C51
2015-04-14 07:36:25 S 11 31 53.03 +74 33 47.7 L C51
2015-04-14 09:11:02 S 11 31 21.61 +74 34 09.2 L C51
2015-04-14 10:45:28 S 11 30 50.20 +74 34 30.5 L C51
2015-04-14 12:20:06 S 11 30 18.44 +74 34 51.3 L C51
2015-04-14 13:54:31 S 11 29 46.97 +74 35 12.2 L C51
2015-04-14 15:29:08 S 11 29 15.06 +74 35 32.4 L C51
2015-04-14 17:03:34 S 11 28 43.23 +74 35 52.2 L C51
2015-04-14 20:12:37 S 11 27 38.933 +74 36 31.43 L C51
2015-04-14 23:21:40 S 11 26 34.17 +74 37 08.8 L C51
2015-04-15 00:04:36 C 11 26 13.80 +74 37 38.5 q C23
2015-04-15 00:10:00 C 11 26 11.86 +74 37 39.3 q C23
2015-04-15 00:15:23 C 11 26 09.92 +74 37 40.2 q C23
2015-04-15 00:19:42 C 11 26 08.36 +74 37 40.7 q C23
2015-04-15 22:15:45 C 11 18 24.30 +74 41 27.6 q K38
2015-04-15 22:19:37 C 11 18 23.50 +74 41 25.5 q C23
2015-04-15 22:23:56 C 11 18 21.66 +74 41 26.0 q C23
2015-04-15 22:29:20 C 11 18 19.59 +74 41 26.8 q C23
2015-04-15 22:38:03 C 11 18 15.57 +74 41 30.0 q K38
2015-04-15 23:00:55 C 11 18 06.63 +74 41 31.9 q K38
2015-04-17 12:34:35 C 11 03 50.94 +74 44 55.6 o 300
2015-04-17 12:36:27 C 11 03 50.28 +74 44 55.5 o 300
2015-04-17 12:38:19 C 11 03 49.31 +74 44 55.7 o 300
2015-04-17 12:40:13 C 11 03 48.60 +74 44 55.5 o 300
2015-04-17 12:42:05 C 11 03 47.82 +74 44 55.8 o 300
2015-04-17 12:43:57 C 11 03 46.98 +74 44 55.7 o 300
2015-04-17 22:22:12 C 10 59 52.31 +74 44 52.6 q C23
2015-04-17 22:26:31 C 10 59 50.37 +74 44 52.6 q C23
2015-04-17 22:31:54 C 10 59 48.03 +74 44 52.5 q C23
2015-04-17 22:37:18 C 10 59 45.73 +74 44 52.2 q C23
2015-04-18 21:08:38 C 10 50 22.52 +74 44 00.2 q C23
2015-04-18 21:12:56 C 10 50 20.55 +74 43 59.9 q C23
2015-04-18 21:18:20 C 10 50 18.10 +74 43 59.4 q C23
2015-04-18 21:23:44 C 10 50 15.61 +74 43 58.8 q C23
2015-04-19 20:42:30 C 10 39 59.76 +74 41 03.0 q C23
2015-04-19 20:46:39 C 10 39 57.87 +74 41 01.4 q C23
2015-04-19 20:50:47 C 10 39 55.93 +74 41 01.0 q C23
2015-04-19 20:54:06 C 10 39 54.24 +74 41 00.6 q C23
2015-04-19 21:22:37 C 10 39 41.03 +74 41 04.4 q I89
2015-04-19 21:38:55 C 10 39 33.05 +74 41 01.2 q I89
2015-04-19 21:56:42 C 10 39 24.34 +74 40 57.5 q I89
2015-04-20 00:17:14 C 10 38 15.92 +74 40 21.0 q I89
2015-04-20 00:30:29 C 10 38 09.57 +74 40 16.9 q I89
2015-04-20 00:51:23 C 10 37 59.54 +74 40 10.2 q I89
2015-04-20 21:17:23 C 10 28 32.24 +74 35 29.3 q K38
2015-04-20 21:43:56 C 10 28 18.73 +74 35 20.3 q K38
2015-04-20 22:10:28 C 10 28 05.25 +74 35 10.9 q K38
2015-04-20 22:37:00 C 10 27 51.79 +74 35 01.1 q K38
2015-04-20 23:00:54 C 10 27 39.76 +74 34 52.1 q K38
2015-04-21 19:56:05 C 10 17 26.29 +74 27 28.2 r 168
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)