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
2015-07-10 00:54:21 S 03 05 46.14 -50 32 05.7 L C51
2016-12-09 11:28:58 C 06 43 29.71 +44 54 24.8 q G96
2016-12-09 11:35:19 C 06 43 29.19 +44 54 28.4 q G96
2016-12-09 11:41:39 C 06 43 28.80 +44 54 31.9 q G96
2016-12-09 11:47:59 C 06 43 28.41 +44 54 35.2 q G96
2016-12-27 08:26:30 C 06 06 55.37 +47 58 06.2 q G96
2016-12-27 08:37:39 C 06 06 54.24 +47 58 09.9 q G96
2016-12-27 08:45:18 C 06 06 53.56 +47 58 11.6 q G96
2016-12-27 08:51:43 C 06 06 52.76 +47 58 14.3 q G96
2016-12-27 09:39:07 C 06 06 48.27 +47 58 26.2 q G96
2016-12-27 09:40:57 C 06 06 47.98 +47 58 26.7 q G96
2016-12-27 09:42:42 C 06 06 47.84 +47 58 27.7 q G96
2016-12-27 09:44:27 C 06 06 47.62 +47 58 28.0 q G96
2018-12-10 04:43:44 C 03 57 24.35 +31 34 17.2 V G96
2018-12-10 04:51:45 C 03 57 23.73 +31 34 16.9 V G96
2018-12-10 04:59:45 C 03 57 23.17 +31 34 16.9 V G96
2018-12-10 05:07:46 C 03 57 22.58 +31 34 16.9 V G96
2018-12-26 01:17:30 C 03 34 18.50 +31 18 44.5 u H21
2018-12-26 01:34:14 C 03 34 17.68 +31 18 43.7 u H21
2018-12-26 01:53:46 C 03 34 16.65 +31 18 42.8 u H21
2019-01-04 02:50:03 C 03 25 14.26 +31 03 10.1 u H21
2019-01-04 03:11:45 C 03 25 13.52 +31 03 08.3 u H21
2019-01-04 03:31:11 C 03 25 12.78 +31 03 07.7 u H21
2020-07-31 14:25:09 C 03 30 49.595 +09 44 57.41 U F51
2020-07-31 14:31:54 C 03 30 49.880 +09 44 59.17 U F51
2020-07-31 14:38:40 C 03 30 50.141 +09 45 00.53 U F51
2020-07-31 14:45:29 C 03 30 50.425 +09 45 02.16 U F51
2020-10-12 13:31:21 C 03 35 08.218 +13 19 40.70 U F51
2020-10-12 13:49:51 C 03 35 07.300 +13 19 41.68 U F51
2020-10-12 14:27:03 C 03 35 05.397 +13 19 42.91 U F51
2020-10-15 07:47:55 C 03 31 45.93 +13 22 12.5 V G96
2020-10-15 07:55:21 C 03 31 45.55 +13 22 12.6 V G96
2020-10-15 08:02:46 C 03 31 45.14 +13 22 12.8 V G96
2020-10-15 08:10:11 C 03 31 44.77 +13 22 12.6 V G96
2020-10-23 09:36:16 C 03 20 35.39 +13 27 33.3 V G96
2020-10-23 09:45:56 C 03 20 34.75 +13 27 33.4 V G96
2020-10-23 09:46:35 C 03 20 34.997 +13 27 34.30 U F52
2020-10-23 09:53:20 C 03 20 34.26 +13 27 33.6 V G96
2020-10-23 10:00:41 C 03 20 33.80 +13 27 33.8 V G96
2020-10-23 10:02:16 C 03 20 34.006 +13 27 34.59 U F52
2020-10-23 10:33:35 C 03 20 32.019 +13 27 35.66 U F52
2020-11-05 09:17:22 C 03 00 00.86 +13 30 59.5 V G96
2020-11-05 09:24:41 C 03 00 00.31 +13 30 59.3 V G96
2020-11-05 09:32:00 C 02 59 59.84 +13 30 58.9 V G96
2020-11-05 09:39:18 C 02 59 59.24 +13 30 59.3 V G96
2020-11-08 07:29:58 C 02 55 14.475 +13 31 15.56 U F52
2020-11-08 07:45:43 C 02 55 13.410 +13 31 15.75 U F52
2020-11-08 08:17:11 C 02 55 11.223 +13 31 15.55 U F52
2020-11-10 15:44:02 C 02 51 26.17 +13 31 24.9 q D29
2020-11-10 16:04:24 C 02 51 24.78 +13 31 24.4 q D29
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)