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
2015-04-21 19:58:30 C 10 17 25.00 +74 27 26.2 r 168
2015-04-21 19:59:40 C 10 17 24.37 +74 27 26.1 r 168
2015-04-21 22:31:08 C 10 16 09.18 +74 26 32.1 q C23
2015-04-21 22:35:26 C 10 16 06.92 +74 26 30.3 q C23
2015-04-21 22:40:50 C 10 16 03.98 +74 26 27.6 q C23
2015-04-21 22:46:14 C 10 16 01.14 +74 26 25.0 q C23
2015-04-22 18:13:46 C 10 06 04.42 +74 17 08.0 r 168
2015-04-22 18:16:12 C 10 06 03.09 +74 17 06.9 r 168
2015-04-22 18:19:05 C 10 06 01.49 +74 17 05.1 r 168
2015-04-22 18:55:51 C 10 05 41.40 +74 16 42.7 r 168
2015-04-22 18:57:16 C 10 05 40.65 +74 16 41.6 r 168
2015-04-22 18:58:26 C 10 05 40.06 +74 16 41.0 r 168
2015-04-22 18:59:41 C 10 05 39.34 +74 16 40.3 r 168
2015-04-22 19:01:51 C 10 05 38.14 +74 16 39.0 r 168
2015-04-22 20:00:55 C 10 05 10.49 +74 16 22.6 q K38
2015-04-22 20:28:29 C 10 04 55.07 +74 16 06.6 q K38
2015-04-22 20:48:55 C 10 04 43.62 +74 15 54.3 q K38
2015-04-22 20:59:06 C 10 04 34.96 +74 15 24.1 r 168
2015-04-22 21:04:54 C 10 04 34.68 +74 15 44.7 q K38
2015-04-22 22:08:10 C 10 04 00.46 +74 15 02.4 q C23
2015-04-22 22:12:28 C 10 03 58.05 +74 14 59.7 q C23
2015-04-22 22:17:52 C 10 03 55.06 +74 14 56.3 q C23
2015-04-22 22:23:16 C 10 03 52.16 +74 14 53.0 q C23
2015-04-24 00:35:59 C 09 49 41.32 +73 57 29.0 q C23
2015-04-24 00:41:22 C 09 49 38.50 +73 57 24.3 q C23
2015-04-24 00:45:41 C 09 49 35.94 +73 57 20.6 q C23
2015-04-24 00:51:05 C 09 49 33.03 +73 57 16.2 q C23
2015-04-28 00:08:47 C 08 53 04.08 +72 02 32.4 q C23
2015-04-28 00:16:21 C 08 52 59.28 +72 02 18.4 q C23
2015-04-28 00:23:55 C 08 52 54.54 +72 02 03.6 q C23
2015-04-29 01:56:55 C 08 36 47.63 +71 13 01.6 q H21
2015-04-29 01:59:18 C 08 36 46.05 +71 12 56.2 q H21
2015-04-29 02:01:40 C 08 36 44.41 +71 12 50.9 q H21
2015-04-29 02:04:03 C 08 36 42.82 +71 12 45.5 q H21
2015-04-29 02:06:25 C 08 36 41.21 +71 12 40.2 q H21
2015-04-29 02:08:46 C 08 36 39.62 +71 12 34.9 q H21
2015-04-29 02:11:08 C 08 36 38.05 +71 12 29.5 q H21
2015-04-30 03:13:46 C 08 20 33.23 +70 13 16.1 q 703
2015-04-30 03:14:30 C 08 20 32.67 +70 13 14.4 q 703
2015-04-30 03:19:54 C 08 20 28.99 +70 12 59.4 q 703
2015-04-30 03:20:37 C 08 20 28.58 +70 12 57.7 q 703
2015-04-30 03:26:02 C 08 20 24.77 +70 12 42.5 q 703
2015-04-30 03:26:45 C 08 20 24.24 +70 12 42.3 q 703
2015-04-30 03:32:08 C 08 20 20.67 +70 12 25.9 q 703
2015-04-30 03:32:51 C 08 20 20.14 +70 12 23.8 q 703
2015-04-30 20:01:21 C 08 09 42.86 +69 26 24.7 q C23
2015-04-30 20:07:50 C 08 09 38.46 +69 26 05.3 q C23
2015-04-30 20:14:19 C 08 09 34.16 +69 25 44.4 q C23
2015-05-01 04:04:18 C 08 04 26.68 +69 01 51.2 u H21
2015-05-01 04:08:51 C 08 04 23.70 +69 01 36.1 u H21
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)