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
2025-03-28 09:21:30 C 14 47 55.219 +03 28 11.71 V 703
2025-03-28 09:24:45 C 14 47 54.776 +03 28 30.68 V 703
2025-03-28 09:28:01 C 14 47 54.337 +03 28 49.73 V 703
2025-03-28 10:19:15 C 14 47 50.177 +03 34 01.09 V T08
2025-03-28 10:33:26 C 14 47 48.281 +03 35 23.96 V T08
2025-03-28 10:36:05 C 14 47 47.926 +03 35 39.80 V T08
2025-03-28 10:42:44 C 14 47 47.021 +03 36 18.61 V T08
2025-03-28 10:46:02 C 14 47 46.574 +03 36 38.12 V T08
2025-03-28 10:48:42 C 14 47 46.217 +03 36 53.71 V T08
2025-03-28 10:53:59 C 14 47 45.497 +03 37 24.89 V T08
2025-03-28 11:26:22 C 14 47 41.083 +03 40 35.44 V T08
2025-03-29 06:04:50 C 14 45 15.698 +05 36 59.76 V W68
2025-03-29 06:07:26 C 14 45 15.305 +05 37 16.72 V W68
2025-03-29 06:52:26 C 14 45 08.347 +05 42 11.02 V W68
2025-03-29 07:01:06 C 14 45 07.010 +05 43 07.68 V W68
2025-03-29 19:57:47 B 14 43 16.54 +07 09 32.6 X L99
2025-03-29 19:59:51 B 14 43 16.22 +07 09 47.8 X L99
2025-03-29 20:01:55 B 14 43 15.90 +07 10 01.6 X L99
2025-03-29 20:03:44 B 14 43 15.60 +07 10 14.3 X L99
2025-03-29 20:38:21 C 14 43 09.64 +07 14 10.6 V M31
2025-03-29 20:38:55 C 14 43 09.56 +07 14 15.6 V M31
2025-03-29 20:39:28 C 14 43 09.46 +07 14 19.7 V M31
2025-03-29 20:40:04 C 14 43 09.38 +07 14 23.9 V M31
2025-03-29 20:40:38 C 14 43 09.31 +07 14 28.1 V M31
2025-03-29 20:41:13 C 14 43 09.22 +07 14 32.0 V M31
2025-03-29 21:15:51 C 14 43 04.668 +07 18 44.14 Z C23
2025-03-29 21:21:37 C 14 43 03.811 +07 19 23.45 Z C23
2025-03-29 22:08:36 C 14 42 56.292 +07 24 57.85 Z C23
2025-03-29 22:12:04 C 14 42 55.716 +07 25 22.51 Z C23
2025-03-29 23:01:59 C 14 42 45.18 +07 31 15.8 q 168
2025-03-29 23:32:04 C 14 42 40.16 +07 34 51.2 q 168
2025-03-29 23:56:08 C 14 42 36.15 +07 37 43.9 q 168
2025-03-30 11:13:33 C 14 40 45.149 +09 01 52.07 V 703
2025-03-30 11:16:31 C 14 40 44.609 +09 02 14.14 V 703
2025-03-30 11:19:28 C 14 40 44.051 +09 02 36.82 V 703
2025-03-30 11:22:25 C 14 40 43.489 +09 02 59.68 V 703
2025-03-30 21:22:33 C 14 39 02.410 +10 21 24.55 Z C23
2025-03-30 21:29:27 C 14 39 01.102 +10 22 21.14 Z C23
2025-03-30 21:35:03 C 14 39 00.017 +10 23 06.65 Z C23
2025-03-31 07:54:24 C 14 37 04.020 +11 49 49.62 V T08
2025-03-31 08:01:07 C 14 37 02.671 +11 50 47.65 V T08
2025-03-31 08:09:50 C 14 37 00.886 +11 52 03.04 V T08
2025-03-31 08:16:35 C 14 36 59.484 +11 53 01.46 V T08
2025-03-31 10:02:43 C 14 36 33.419 +12 08 11.80 V 703
2025-03-31 10:06:00 C 14 36 32.699 +12 08 40.13 V 703
2025-03-31 10:09:17 C 14 36 31.982 +12 09 08.78 V 703
2025-03-31 10:12:34 C 14 36 31.266 +12 09 37.40 V 703
2025-03-31 22:32:06 C 14 33 58.886 +14 00 18.50 Z C23
2025-03-31 22:34:05 C 14 33 58.430 +14 00 36.72 Z C23
2025-03-31 22:36:21 C 14 33 57.902 +14 00 58.36 Z C23
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)