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
2020-11-14 05:53:18 C 02 45 43.02 +13 31 43.9 V G96
2020-11-14 06:00:44 C 02 45 42.50 +13 31 43.8 V G96
2020-11-14 06:08:10 C 02 45 42.02 +13 31 44.0 V G96
2020-11-14 06:15:37 C 02 45 41.49 +13 31 43.9 V G96
2020-11-16 07:14:07 C 02 42 31.505 +13 32 01.70 U F52
2020-11-16 07:45:49 C 02 42 29.413 +13 32 01.71 U F52
2020-11-16 08:01:42 C 02 42 28.360 +13 32 01.90 U F52
2022-02-10 05:41:25 C 16 36 12.69 -02 33 47.1 X C95
2022-02-10 05:50:29 C 16 36 14.44 -02 33 58.6 X C95
2022-08-20 13:18:03 C 02 39 30.932 -13 02 44.55 U F52
2022-08-20 13:37:16 C 02 39 30.729 -13 02 48.18 U F52
2022-08-20 13:56:26 C 02 39 30.517 -13 02 51.69 U F52
2022-08-20 14:15:49 C 02 39 30.320 -13 02 55.35 U F52
2022-09-05 14:24:34 C 02 29 39.204 -14 23 45.01 U F51
2022-09-05 14:41:29 C 02 29 38.435 -14 23 48.74 U F51
2022-09-05 14:58:19 C 02 29 37.677 -14 23 52.49 U F51
2022-09-17 12:23:32 C 02 13 58.215 -15 22 20.29 U F52
2022-09-17 12:55:02 C 02 13 56.055 -15 22 25.83 U F52
2022-09-17 13:10:43 C 02 13 54.981 -15 22 28.48 U F52
2022-09-24 11:14:52 C 02 02 03.848 -15 46 07.23 U F52
2022-09-24 11:29:29 C 02 02 02.688 -15 46 08.80 U F52
2022-09-24 11:44:08 C 02 02 01.543 -15 46 10.44 U F52
2022-09-24 11:58:52 C 02 02 00.392 -15 46 12.03 U F52
2022-09-24 12:02:17 C 02 02 00.122 -15 46 12.37 U F52
2022-09-24 12:17:49 C 02 01 58.896 -15 46 14.10 U F52
2022-09-24 12:33:26 C 02 01 57.670 -15 46 15.69 U F52
2022-09-26 11:11:47 C 01 58 21.864 -15 50 40.36 U F51
2022-09-26 11:27:07 C 01 58 20.626 -15 50 41.63 U F51
2022-09-26 11:42:27 C 01 58 19.391 -15 50 42.94 U F51
2022-09-26 11:57:47 C 01 58 18.148 -15 50 44.28 U F51
2022-10-02 08:39:58 C 01 46 59.279 -15 56 48.48 V G96
2022-10-02 09:19:25 C 01 46 55.916 -15 56 48.41 V G96
2022-10-02 09:26:50 C 01 46 55.319 -15 56 47.94 V G96
2022-10-17 08:59:33 C 01 17 57.897 -15 16 35.95 U F52
2022-10-17 09:15:59 C 01 17 56.623 -15 16 32.35 U F52
2022-10-17 09:32:24 C 01 17 55.350 -15 16 28.66 U F52
2022-10-24 10:07:04 C 01 05 58.018 -14 31 03.23 U F51
2022-10-24 10:25:49 C 01 05 56.747 -14 30 57.33 U F51
2022-10-24 10:44:34 C 01 05 55.470 -14 30 51.41 U F51
2022-10-29 08:42:37 C 00 58 38.499 -13 50 37.90 U F51
2022-10-29 09:14:51 C 00 58 36.572 -13 50 26.09 U F51
2022-10-29 09:30:56 C 00 58 35.619 -13 50 20.09 U F51
2022-11-14 06:18:39 C 00 42 11.156 -11 07 29.68 U F51
2022-11-14 06:35:41 C 00 42 10.634 -11 07 21.62 U F51
2022-11-14 06:52:46 C 00 42 10.119 -11 07 13.59 U F51
2022-11-14 07:12:34 C 00 42 09.520 -11 07 04.22 U F51
2023-12-11 08:52:39 C 08 45 47.246 +45 16 06.96 V G96
2023-12-11 09:00:12 C 08 45 47.164 +45 16 12.90 V G96
2023-12-11 09:07:44 C 08 45 47.128 +45 16 19.06 V G96
2023-12-11 09:15:16 C 08 45 47.041 +45 16 24.64 V G96
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)