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
2003-11-25 07:27:15 C 07 56 19.86 +24 04 21.9 c H41
2003-11-25 07:28:37 C 07 56 20.83 +24 04 32.3 c H41
2003-11-25 07:31:19 C 07 56 22.71 +24 04 53.1 c H41
2003-11-25 16:54:40 C 08 03 20.90 +25 15 49.3 355
2003-11-25 16:56:02 C 08 03 21.88 +25 15 59.4 355
2003-11-25 16:58:02 C 08 03 23.35 +25 16 14.5 355
2003-11-26 02:36:16 C 08 10 50.076 +26 29 08.34 r 620
2003-11-26 02:38:09 C 08 10 51.497 +26 29 22.76 r 620
2003-11-26 02:40:00 C 08 10 52.908 +26 29 36.80 r 620
2003-11-27 04:03:57 C 08 32 03.65 +29 40 27.1 14.8 d H72
2003-11-27 04:04:48 C 08 32 04.36 +29 40 33.0 13.5 d H72
2003-11-27 04:05:38 C 08 32 05.07 +29 40 39.8 14.7 d H72
2003-11-27 04:06:27 C 08 32 05.84 +29 40 45.5 14.9 d H72
2003-11-27 05:53:07 C 08 33 37.29 +29 54 22.1 14.3 d H72
2003-11-27 05:53:57 C 08 33 38.07 +29 54 28.4 14.6 d H72
2003-11-27 05:54:46 C 08 33 38.70 +29 54 34.6 14.3 d H72
2003-11-27 05:55:37 C 08 33 39.43 +29 54 40.7 14.9 d H72
2003-11-27 09:29:14 C 08 36 40.34 +30 21 24.0 15.3 d H72
2003-11-27 09:30:04 C 08 36 40.93 +30 21 29.8 15.4 d H72
2003-11-27 09:30:53 C 08 36 41.66 +30 21 35.6 15.5 d H72
2003-11-27 09:31:53 C 08 36 42.57 +30 21 43.3 15.3 d H72
2003-11-27 10:47:52 C 08 37 46.92 +30 30 59.0 12.7 d H72
2003-11-27 10:48:40 C 08 37 47.68 +30 31 05.0 13.2 d H72
2003-11-27 10:50:21 C 08 37 49.07 +30 31 16.8 15.2 d H72
2003-11-28 09:04:06 C 08 58 24.70 +33 09 40.6 c H41
2003-11-28 09:06:03 C 08 58 26.49 +33 09 54.2 c H41
2003-11-28 09:09:08 C 08 58 29.30 +33 10 16.1 c H41
2003-11-28 09:12:35 C 08 58 32.43 +33 10 39.6 c H41
2003-11-28 09:13:43 C 08 58 33.51 +33 10 48.0 c H41
2003-11-28 09:17:33 C 08 58 37.01 +33 11 14.8 c H41
2003-11-28 09:19:05 C 08 58 38.46 +33 11 25.6 c H41
2003-11-28 09:22:06 C 08 58 41.21 +33 11 46.6 c H41
2003-11-28 09:24:04 C 08 58 43.03 +33 12 00.5 c H41
2003-11-28 09:25:13 C 08 58 44.09 +33 12 08.7 c H41
2003-11-28 09:31:01 C 08 58 49.40 +33 12 48.9 c H41
2003-11-28 09:32:22 C 08 58 50.61 +33 12 58.1 c H41
2003-11-29 02:10:02 C 09 15 05.96 +35 03 32.8 r 170
2003-11-29 02:10:50 C 09 15 06.72 +35 03 37.8 r 170
2003-11-29 02:11:44 C 09 15 07.60 +35 03 44.0 r 170
2003-11-29 02:13:10 C 09 15 08.96 +35 03 52.9 r 170
2003-11-29 08:10:33 C 09 21 08.34 +35 41 45.8 c H41
2003-11-29 08:13:24 C 09 21 11.14 +35 42 04.1 c H41
2003-11-29 08:15:14 C 09 21 12.99 +35 42 15.9 c H41
2003-11-29 08:16:47 C 09 21 14.41 +35 42 25.4 c H41
2003-11-29 08:18:23 C 09 21 16.02 +35 42 35.9 c H41
2003-11-29 08:21:33 C 09 21 19.11 +35 42 56.3 c H41
2003-11-29 08:24:11 C 09 21 21.72 +35 43 13.3 c H41
2003-11-29 08:28:15 C 09 21 25.71 +35 43 39.5 c H41
2003-11-29 08:29:55 C 09 21 27.36 +35 43 50.3 c H41
2003-11-29 08:32:42 C 09 21 30.01 +35 44 07.8 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)