85953 (1999 FK21)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7030446163 ± 2.00e+00
Semi-major axis (a)0.7388810751 AU ± 3.00e+00
Inclination (i)12.59565879° ± 4.00e+00
Long. of Asc. Node (Ω)180.43171176° ± 5.00e+00
Arg. of Perihelion (ω)172.42809574° ± 6.00e+00
Mean Anomaly (M)258.98007896° ± 1.28e-05
Mean Motion (n)1.5518525758°/day ± 9.45e+00
Perihelion dist (q)0.21941471 AU ± 1.73e+00
Aphelion dist (Q)1.25834744 AU ± 5.32e+00
Orbital Period0.63512881 yr ± 3.87e+00
NGA Modelr2
A2-1.48932034e-06 AU/d²
Physical Parameters
H (abs. magnitude)18.09
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.174″
Uncertainty0
Orbit TypeAten
MOID0.070855 AU
Observations Used1870
Gaia Obs Used16
Oppositions26
Arc Total1971-2017
First Observation Used1971-03-26
Last Observation Used2025-04-18
Observations (2162)
Date Type RA Dec Mag Band Observatory
2025-04-01 09:24:42 C 14 31 29.839 +15 45 32.76 V T08
2025-04-01 09:38:07 C 14 31 26.390 +15 47 46.68 V T08
2025-04-01 09:46:05 C 14 31 24.334 +15 49 06.17 V T08
2025-04-01 09:52:04 C 14 31 22.781 +15 50 06.04 V T08
2025-04-01 19:00:42 V 14 29 05.34 +17 22 20.5 V 270
2025-04-01 19:00:42 v 1 024.63078 +60.79185 270
2025-04-01 19:07:23 V 14 29 03.69 +17 23 30.0 V 270
2025-04-01 19:07:23 v 1 024.63078 +60.79185 270
2025-04-01 19:13:36 V 14 29 02.02 +17 24 34.7 V 270
2025-04-01 19:13:36 v 1 024.63078 +60.79185 270
2025-04-01 19:20:01 V 14 29 00.32 +17 25 42.2 V 270
2025-04-01 19:20:01 v 1 024.63078 +60.79185 270
2025-04-01 20:54:09 C 14 28 36.279 +17 42 21.88 V G33
2025-04-01 20:57:31 C 14 28 35.371 +17 42 57.44 V G33
2025-04-01 21:00:59 C 14 28 34.463 +17 43 33.56 V G33
2025-04-01 21:50:25 C 14 28 21.074 +17 52 20.42 Z C23
2025-04-01 21:57:42 C 14 28 19.087 +17 53 38.51 Z C23
2025-04-02 01:18:44 V 14 27 26.78 +18 29 38.3 V 270
2025-04-02 01:18:44 v 1 283.32410 +37.23086 270
2025-04-02 01:26:33 V 14 27 24.59 +18 31 04.4 V 270
2025-04-02 01:26:33 v 1 283.32410 +37.23086 270
2025-04-02 01:32:38 V 14 27 23.03 +18 32 09.1 V 270
2025-04-02 01:32:38 v 1 283.32410 +37.23086 270
2025-04-02 01:38:12 V 14 27 21.45 +18 33 11.6 V 270
2025-04-02 01:38:12 v 1 283.32410 +37.23086 270
2025-04-02 05:18:30 V 14 26 19.32 +19 13 37.8 V 270
2025-04-02 05:18:30 v 1 259.08818 +32.33161 270
2025-04-02 05:25:10 V 14 26 17.28 +19 14 52.5 V 270
2025-04-02 05:25:10 v 1 259.08818 +32.33161 270
2025-04-02 05:31:43 V 14 26 15.42 +19 16 04.7 V 270
2025-04-02 05:31:43 v 1 259.08818 +32.33161 270
2025-04-02 05:37:59 V 14 26 13.47 +19 17 14.1 V 270
2025-04-02 05:37:59 v 1 259.08818 +32.33161 270
2025-04-02 09:03:09 C 14 25 15.355 +19 55 43.97 V T08
2025-04-02 09:20:57 C 14 25 09.845 +19 59 06.22 V T08
2025-04-02 09:29:05 C 14 25 07.322 +20 00 38.88 V T08
2025-04-02 09:32:23 C 14 25 06.329 +20 01 14.45 V T05
2025-04-02 12:08:00 C 14 24 16.726 +20 30 53.89 V T08
2025-04-02 12:20:27 C 14 24 12.696 +20 33 16.56 V T08
2025-04-02 12:26:52 C 14 24 10.690 +20 34 28.42 V T05
2025-04-02 12:39:57 C 14 24 06.442 +20 36 58.43 V T05
2025-04-02 21:48:15 C 14 21 19.567 +22 23 53.70 X M26
2025-04-02 21:49:35 C 14 21 19.114 +22 24 10.01 X M26
2025-04-02 21:50:40 C 14 21 18.782 +22 24 22.64 X M26
2025-04-02 21:51:44 C 14 21 18.403 +22 24 35.53 X M26
2025-04-02 21:52:48 C 14 21 18.043 +22 24 48.38 X M26
2025-04-02 21:54:23 C 14 21 17.501 +22 25 07.90 X M26
2025-04-02 23:24:51 C 14 20 46.589 +22 43 17.33 Z C23
2025-04-03 00:06:58 C 14 20 32.035 +22 51 50.76 Z C23
2025-04-03 08:51:25 C 14 17 34.970 +24 41 27.35 V T05
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2025-04-04 05:20:00 91879923.36 2 us 8560 -14 -14
2025-04-07 07:40:00 136680.959 0.4 Hz 8560 -14 -14
2025-04-07 08:10:00 81139927.01 2 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)