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
2009-03-18 03:45:38 C 09 15 09.86 +04 58 44.2 r 703
2009-03-18 03:53:17 C 09 15 08.66 +04 59 01.4 r 683
2009-03-18 03:53:34 C 09 15 08.67 +04 59 01.7 r 703
2009-03-18 04:01:37 C 09 15 07.41 +04 59 19.5 r 703
2009-03-18 04:09:33 C 09 15 06.26 +04 59 36.6 r 703
2009-03-18 04:12:33 C 09 15 05.83 +04 59 43.9 r 683
2009-03-18 04:31:48 C 09 15 02.92 +05 00 27.1 r 683
2009-03-19 04:14:49 C 09 11 43.26 +05 51 15.6 17.5 c 704
2009-03-19 04:31:37 C 09 11 40.83 +05 51 51.1 19.3 c 704
2009-03-19 04:48:18 C 09 11 38.47 +05 52 25.4 17.6 c 704
2009-03-19 05:05:06 C 09 11 36.07 +05 53 00.4 17.6 c 704
2009-03-19 05:21:54 C 09 11 33.69 +05 53 35.6 17.6 c 704
2009-03-21 22:05:00 C 09 03 32.54 +07 59 37.5 c A24
2009-03-21 22:06:28 C 09 03 32.42 +07 59 39.7 c A24
2009-03-21 22:22:01 C 09 03 30.57 +08 00 08.0 c A24
2009-03-21 22:39:01 C 09 03 28.60 +08 00 38.4 c A24
2009-03-21 22:54:34 C 09 03 26.74 +08 01 06.7 c A24
2009-03-21 22:56:01 C 09 03 26.59 +08 01 08.7 c A24
2009-03-22 05:42:07 C 09 02 41.54 +08 13 24.0 17.4 c 704
2009-03-22 05:59:50 C 09 02 39.50 +08 13 55.8 17.4 c 704
2009-03-22 06:19:00 C 09 02 37.27 +08 14 30.0 17.8 c 704
2009-03-22 06:37:39 C 09 02 35.14 +08 15 03.2 17.6 c 704
2009-03-24 03:55:09 C 08 57 56.97 +09 31 52.5 o G56
2009-03-24 04:03:43 C 08 57 56.14 +09 32 06.6 o G56
2009-03-24 04:11:47 C 08 57 55.32 +09 32 19.4 o G56
2009-03-24 21:28:56 C 08 56 17.99 +09 59 38.0 c A24
2009-03-24 21:30:23 C 08 56 17.84 +09 59 39.6 c A24
2009-03-24 21:45:57 C 08 56 16.35 +10 00 04.0 c A24
2009-03-24 22:02:58 C 08 56 14.74 +10 00 30.0 c A24
2009-03-24 22:18:33 C 08 56 13.24 +10 00 54.3 c A24
2009-03-24 22:20:00 C 08 56 13.13 +10 00 56.4 c A24
2009-03-25 04:08:55 C 08 55 42.71 +10 09 57.4 o G56
2009-03-29 03:58:06 C 08 48 25.27 +12 22 04.6 r 703
2009-03-29 04:06:42 C 08 48 24.69 +12 22 15.0 r 703
2009-03-29 04:15:27 C 08 48 24.08 +12 22 24.1 r 703
2009-03-29 04:24:02 C 08 48 23.47 +12 22 36.3 r 703
2009-03-29 04:28:05 C 08 48 23.20 +12 22 41.5 18.1 c 704
2009-03-29 04:44:55 C 08 48 22.06 +12 23 01.9 18.2 c 704
2009-03-29 05:01:55 C 08 48 20.86 +12 23 22.9 18.5 c 704
2009-03-29 05:18:47 C 08 48 19.68 +12 23 43.1 18.1 c 704
2009-03-29 05:36:02 C 08 48 18.50 +12 24 04.5 18.0 c 704
2009-04-01 03:42:49 C 08 44 23.96 +13 44 16.1 r G96
2009-04-01 03:54:33 C 08 44 23.35 +13 44 28.4 r G96
2009-04-01 04:06:31 C 08 44 22.70 +13 44 41.1 r G96
2009-04-01 04:18:23 C 08 44 22.05 +13 44 53.7 r G96
2009-04-22 03:26:05 C 08 38 18.53 +19 13 31.4 19.4 c 704
2009-04-22 03:43:21 C 08 38 18.75 +19 13 37.2 19.6 c 704
2009-04-22 04:01:32 C 08 38 18.90 +19 13 43.8 19.7 c 704
2009-04-22 04:34:42 C 08 38 19.28 +19 13 56.8 19.7 c 704
2009-04-30 03:21:15 C 08 42 08.02 +20 13 09.5 r G96
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)