85774 (1998 UT18)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3289078930 ± 2.00e+00
Semi-major axis (a)1.4027966106 AU ± 3.00e+00
Inclination (i)13.58750642° ± 4.00e+00
Long. of Asc. Node (Ω)64.61794782° ± 5.00e+00
Arg. of Perihelion (ω)50.15505702° ± 6.00e+00
Mean Anomaly (M)55.92981235° ± 7.02e-06
Mean Motion (n)0.5932260509°/day ± 1.90e+00
Perihelion dist (q)0.94140573 AU ± 3.45e+00
Aphelion dist (Q)1.86418749 AU ± 4.87e+00
Orbital Period1.66146831 yr ± 5.33e+00
NGA Modelr2
A2-6.99752834e-07 AU/d²
Physical Parameters
H (abs. magnitude)19.09
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.423″
Uncertainty0
Orbit TypeApollo
MOID0.035163 AU
Observations Used739
Oppositions14
Arc Total1989-2024
First Observation Used1989-04-30
Last Observation Used2024-07-01
Observations (902)
Date Type RA Dec Mag Band Observatory
2003-11-23 05:40:14 C 07 23 38.06 +18 03 17.9 d H72
2003-11-23 05:40:50 C 07 23 38.40 +18 03 22.2 d H72
2003-11-23 05:41:26 C 07 23 38.71 +18 03 26.5 d H72
2003-11-23 08:11:35 C 07 25 06.00 +18 20 34.3 16.8 c 704
2003-11-23 08:29:43 C 07 25 16.34 +18 22 42.2 16.4 c 704
2003-11-23 08:47:52 C 07 25 26.74 +18 24 49.3 16.3 c 704
2003-11-23 09:06:08 C 07 25 37.08 +18 26 57.4 16.2 c 704
2003-11-23 09:24:34 C 07 25 47.58 +18 29 06.6 16.2 c 704
2003-11-24 07:25:09 C 07 39 38.76 +21 06 00.6 c H41
2003-11-24 07:29:27 C 07 39 41.48 +21 06 32.5 c H41
2003-11-24 07:32:58 C 07 39 43.75 +21 06 58.8 c H41
2003-11-24 07:36:33 C 07 39 45.94 +21 07 24.6 c H41
2003-11-24 07:39:53 C 07 39 48.06 +21 07 49.0 c H41
2003-11-24 07:43:29 C 07 39 50.35 +21 08 16.0 c H41
2003-11-24 07:44:55 C 07 39 51.25 +21 08 26.9 c H41
2003-11-24 07:46:25 C 07 39 52.21 +21 08 37.5 c H41
2003-11-24 07:47:59 C 07 39 53.15 +21 08 48.6 c H41
2003-11-24 07:49:52 C 07 39 55.00 +21 09 08.1 c H41
2003-11-24 07:53:59 C 07 39 56.96 +21 09 32.7 c H41
2003-11-24 07:56:55 C 07 39 58.83 +21 09 54.8 c H41
2003-11-24 08:00:10 C 07 40 00.89 +21 10 18.6 c H41
2003-11-24 08:01:45 C 07 40 01.89 +21 10 30.3 c H41
2003-11-24 08:05:00 C 07 40 03.94 +21 10 53.9 c H41
2003-11-24 08:06:29 C 07 40 04.86 +21 11 05.2 c H41
2003-11-24 08:11:09 C 07 40 07.81 +21 11 40.3 c H41
2003-11-24 08:13:19 C 07 40 09.17 +21 11 55.3 c H41
2003-11-24 08:17:33 C 07 40 11.83 +21 12 25.9 c H41
2003-11-24 08:18:54 C 07 40 12.71 +21 12 36.7 c H41
2003-11-24 08:22:50 C 07 40 15.21 +21 13 05.6 c H41
2003-11-24 08:24:12 C 07 40 16.07 +21 13 15.5 c H41
2003-11-24 08:26:30 C 07 40 17.50 +21 13 32.1 c H41
2003-11-24 08:33:59 C 07 40 22.24 +21 14 27.6 c H41
2003-11-24 08:37:38 C 07 40 24.56 +21 14 54.4 c H41
2003-11-24 08:38:55 C 07 40 25.35 +21 15 03.4 c H41
2003-11-24 08:40:11 C 07 40 26.17 +21 15 12.7 c H41
2003-11-24 08:42:26 C 07 40 27.59 +21 15 29.4 c H41
2003-11-24 08:44:18 C 07 40 28.80 +21 15 43.8 c H41
2003-11-24 08:47:11 C 07 40 30.58 +21 16 04.1 c H41
2003-11-24 08:48:32 C 07 40 31.46 +21 16 14.7 c H41
2003-11-24 08:51:07 C 07 40 33.08 +21 16 33.2 c H41
2003-11-24 08:52:43 C 07 40 34.07 +21 16 45.1 c H41
2003-11-24 08:54:26 C 07 40 35.17 +21 16 57.9 c H41
2003-11-25 07:03:30 C 07 56 03.21 +24 01 20.8 c H41
2003-11-25 07:07:34 C 07 56 06.02 +24 01 51.8 c H41
2003-11-25 07:09:39 C 07 56 07.49 +24 02 07.4 c H41
2003-11-25 07:10:57 C 07 56 08.39 +24 02 17.2 c H41
2003-11-25 07:12:19 C 07 56 09.37 +24 02 27.8 c H41
2003-11-25 07:14:25 C 07 56 10.86 +24 02 44.0 c H41
2003-11-25 07:17:09 C 07 56 12.80 +24 03 04.9 c H41
2003-11-25 07:18:24 C 07 56 13.64 +24 03 14.0 c H41
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2003-11-23 06:23:00 86521.7647 0.1 Hz 2380 -1 -1
2003-11-23 06:49:00 74318367.31 3 us 2380 -1 -1
2003-11-23 06:49:00 85592.7465 0.05 Hz 2380 -1 -1
2008-11-22 09:15:00 106938837.38 0.7 us 2380 -1 -1
2008-11-22 09:15:00 35356.2145 0.1 Hz 2380 -1 -1
2008-11-23 09:20:00 105866298.48 1.5 us 2380 -1 -1
2008-11-23 09:20:00 23836.8747 0.1 Hz 2380 -1 -1
2013-11-21 11:01:00 171997298.39 1 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)