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
1999-03-31 08:02:38 C 13 29 02.42 +71 24 18.4 c 699
1999-03-31 08:20:57 C 13 29 00.67 +71 24 35.3 c 699
1999-03-31 08:39:16 C 13 28 58.81 +71 24 51.4 c 699
1999-04-06 03:21:57 C 13 15 02.32 +73 24 49.1 c 699
1999-04-06 03:23:48 C 13 15 02.11 +73 24 49.7 c 699
1999-04-06 03:36:38 C 13 15 00.11 +73 25 03.4 c 699
1999-04-06 03:38:27 C 13 15 00.04 +73 25 03.9 c 699
1999-04-06 03:51:17 C 13 14 58.04 +73 25 16.9 c 699
1999-04-06 03:53:09 C 13 14 57.71 +73 25 18.4 c 699
1999-04-06 03:57:23 C 13 14 57.23 +73 25 22.1 c 699
1999-04-06 03:59:12 C 13 14 56.87 +73 25 22.2 c 699
1999-04-06 04:12:04 C 13 14 55.16 +73 25 36.4 c 699
1999-04-06 04:13:53 C 13 14 54.65 +73 25 38.3 c 699
1999-04-06 04:26:43 C 13 14 52.97 +73 25 49.5 c 699
1999-04-06 04:28:33 C 13 14 52.50 +73 25 52.1 c 699
1999-04-06 18:39:44 C 13 12 57.37 +73 37 58.5 d 046
1999-04-06 18:41:45 C 13 12 57.16 +73 38 00.7 d 046
1999-04-06 18:43:29 C 13 12 56.88 +73 38 02.0 d 046
1999-04-06 18:45:01 C 13 12 56.67 +73 38 03.5 d 046
1999-04-06 18:47:39 C 13 12 56.30 +73 38 06.3 d 046
1999-04-06 19:16:11 C 13 12 51.84 +73 38 32.4 557
1999-04-06 19:18:12 C 13 12 51.46 +73 38 34.7 557
1999-04-06 19:20:13 C 13 12 51.23 +73 38 36.5 557
1999-04-06 19:22:14 C 13 12 51.01 +73 38 37.6 557
1999-04-09 06:23:57 C 13 03 33.67 +74 30 16.2 c 699
1999-04-09 06:38:38 C 13 03 30.62 +74 30 29.5 c 699
1999-04-09 06:53:19 C 13 03 27.63 +74 30 42.5 c 699
1999-04-09 08:15:18 C 13 03 09.91 +74 31 54.1 z 719
1999-04-09 08:30:31 C 13 03 06.77 +74 32 05.6 z 719
1999-04-09 10:08:11 C 13 02 46.90 +74 33 25.6 z 719
1999-04-09 10:26:04 C 13 02 43.33 +74 33 39.3 z 719
1999-04-09 21:33:00 C 13 00 49.96 +74 43 24.5 c 611
1999-04-09 21:38:59 C 13 00 48.64 +74 43 29.4 c 611
1999-04-13 19:25:45 C 12 39 28.56 +76 06 31.6 z 587
1999-04-13 19:33:03 C 12 39 26.46 +76 06 38.1 z 587
1999-04-13 19:38:32 C 12 39 24.53 +76 06 43.6 z 587
1999-04-14 13:30:00 C 12 34 11.90 +76 22 58.2 360
1999-04-14 13:33:44 C 12 34 10.59 +76 23 02.1 360
1999-04-14 13:37:30 C 12 34 09.31 +76 23 05.4 360
1999-04-17 21:26:52 C 12 05 00.30 +77 34 18.3 b 118
1999-04-17 21:30:29 C 12 04 58.93 +77 34 21.5 b 118
1999-04-17 21:36:30 C 12 04 56.02 +77 34 26.5 b 118
1999-04-18 01:00:26 C 12 03 19.16 +77 37 16.7 z 151
1999-04-18 01:05:26 C 12 03 16.50 +77 37 20.0 z 151
1999-04-18 01:08:55 C 12 03 15.27 +77 37 23.8 z 151
1999-04-18 01:13:36 C 12 03 13.45 +77 37 26.9 z 151
1999-04-18 01:22:22 C 12 03 08.70 +77 37 33.7 z 151
1999-04-18 01:25:40 C 12 03 07.00 +77 37 36.5 z 151
1999-04-18 19:27:57 C 11 54 49.78 +77 53 28.2 557
1999-04-18 19:31:07 C 11 54 48.05 +77 53 31.0 557
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)