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
2007-12-20 07:51:08 C 08 47 05.56 +48 01 02.7 r G96
2007-12-20 07:51:55 C 08 47 05.53 +48 01 04.8 r G96
2007-12-26 08:29:45 C 08 42 21.71 +50 04 17.8 o H55
2007-12-26 08:41:14 C 08 42 21.22 +50 04 27.7 o H55
2007-12-26 08:52:43 C 08 42 20.68 +50 04 38.0 o H55
2008-02-03 05:19:33 C 07 13 05.46 +59 06 14.0 c 711
2008-02-03 05:33:36 C 07 13 04.12 +59 06 15.1 c 711
2008-02-03 05:47:36 C 07 13 02.34 +59 06 15.9 c 711
2008-02-03 06:01:51 C 07 13 00.68 +59 06 16.4 c 711
2011-10-25 10:06:46 C 04 12 24.493 +22 11 08.81 L F51
2011-10-25 10:27:42 C 04 12 23.400 +22 11 11.82 L F51
2011-10-25 10:48:34 C 04 12 22.346 +22 11 14.74 L F51
2011-10-25 11:09:23 C 04 12 21.290 +22 11 17.54 L F51
2011-11-19 04:35:04 C 03 35 03.73 +23 03 01.0 r G96
2011-11-19 04:44:56 C 03 35 03.04 +23 03 01.3 r G96
2011-11-19 04:54:53 C 03 35 02.32 +23 03 01.4 r G96
2011-11-23 07:55:17 C 03 28 11.28 +23 05 09.2 r G96
2011-11-23 08:02:43 C 03 28 10.74 +23 05 09.7 r G96
2011-11-23 08:10:14 C 03 28 10.20 +23 05 10.7 r G96
2011-11-23 08:17:46 C 03 28 09.73 +23 05 09.9 r G96
2013-11-25 05:49:44 C 01 37 19.853 +03 04 57.01 L F51
2013-11-25 06:11:26 C 01 37 19.006 +03 05 01.09 L F51
2013-11-25 06:33:04 C 01 37 18.150 +03 05 05.18 L F51
2013-11-25 06:54:41 C 01 37 17.299 +03 05 09.24 L F51
2015-01-28 12:30:35 C 12 35 12.95 +47 34 03.2 q 448
2015-01-28 12:54:15 C 12 35 14.57 +47 34 25.4 q 448
2015-02-07 13:26:34 C 12 51 50.926 +51 31 40.52 L F51
2015-02-07 13:46:10 C 12 51 52.054 +51 32 00.69 L F51
2015-02-07 14:05:44 C 12 51 53.196 +51 32 20.79 L F51
2015-02-12 12:05:20 C 12 59 09.998 +53 36 30.06 L F51
2015-02-12 12:25:23 C 12 59 11.055 +53 36 51.90 L F51
2015-02-12 12:45:31 C 12 59 12.121 +53 37 13.82 L F51
2015-02-27 00:33:29 C 13 15 09.55 +59 55 40.3 q D00
2015-02-27 00:44:58 C 13 15 09.77 +59 55 53.3 q D00
2015-02-27 00:56:26 C 13 15 10.04 +59 56 05.3 q D00
2015-02-27 01:07:53 C 13 15 10.33 +59 56 17.5 q D00
2015-03-08 08:27:44 C 13 19 01.30 +63 52 53.1 u H21
2015-03-08 08:34:05 C 13 19 01.27 +63 52 59.5 u H21
2015-03-08 08:40:12 C 13 19 01.23 +63 53 05.8 u H21
2015-03-08 09:37:51 C 13 19 00.80 +63 54 03.9 u H21
2015-03-08 09:41:43 C 13 19 00.77 +63 54 07.6 u H21
2015-03-08 09:45:35 C 13 19 00.73 +63 54 11.5 u H21
2015-03-08 09:49:18 C 13 19 00.72 +63 54 15.4 u H21
2015-03-08 09:53:01 C 13 19 00.68 +63 54 19.3 u H21
2015-03-08 09:56:52 C 13 19 00.68 +63 54 23.0 u H21
2015-03-08 10:00:43 C 13 19 00.64 +63 54 26.8 u H21
2015-03-08 10:10:18 C 13 19 00.58 +63 54 36.4 u H21
2015-03-08 10:17:03 C 13 19 00.52 +63 54 43.3 u H21
2015-03-10 12:27:29 C 13 18 54.623 +64 45 49.12 L F51
2015-03-10 12:45:34 C 13 18 54.275 +64 46 07.33 L F51
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)