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
2003-11-29 08:36:04 C 09 21 33.29 +35 44 29.2 c H41
2003-11-29 08:40:37 C 09 21 37.76 +35 44 58.2 c H41
2003-11-30 09:07:03 C 09 46 50.38 +38 06 07.5 c H41
2003-11-30 09:08:51 C 09 46 52.26 +38 06 17.9 c H41
2003-11-30 09:10:36 C 09 46 54.08 +38 06 27.0 c H41
2003-11-30 09:13:42 C 09 46 57.14 +38 06 43.9 c H41
2003-11-30 09:15:09 C 09 46 58.80 +38 06 51.9 c H41
2003-11-30 09:18:02 C 09 47 01.55 +38 07 07.1 c H41
2003-11-30 09:19:24 C 09 47 03.02 +38 07 15.3 c H41
2003-11-30 09:20:49 C 09 47 04.45 +38 07 23.1 c H41
2003-11-30 09:22:26 C 09 47 06.09 +38 07 31.3 c H41
2003-11-30 09:23:53 C 09 47 07.53 +38 07 39.2 c H41
2003-11-30 09:25:51 C 09 47 09.53 +38 07 49.7 c H41
2003-11-30 09:28:02 C 09 47 11.78 +38 08 01.8 c H41
2003-11-30 09:30:17 C 09 47 14.08 +38 08 13.8 c H41
2003-11-30 09:32:55 C 09 47 16.72 +38 08 28.1 c H41
2003-12-01 08:00:14 C 10 11 08.66 +39 56 08.3 c H41
2003-12-01 08:03:27 C 10 11 12.07 +39 56 23.1 c H41
2003-12-01 08:04:50 C 10 11 13.48 +39 56 29.6 c H41
2003-12-01 08:06:19 C 10 11 15.02 +39 56 36.3 c H41
2003-12-01 08:07:52 C 10 11 16.68 +39 56 43.2 c H41
2003-12-01 08:12:59 C 10 11 22.00 +39 57 06.5 c H41
2003-12-01 08:16:24 C 10 11 25.53 +39 57 22.1 c H41
2003-12-01 08:18:22 C 10 11 27.61 +39 57 31.0 c H41
2003-12-01 08:21:38 C 10 11 30.99 +39 57 46.2 c H41
2003-12-01 08:23:22 C 10 11 32.78 +39 57 53.5 c H41
2003-12-01 08:25:50 C 10 11 35.34 +39 58 05.0 c H41
2003-12-01 08:27:13 C 10 11 36.78 +39 58 11.3 c H41
2003-12-01 08:29:13 C 10 11 38.80 +39 58 20.4 c H41
2003-12-03 19:03:23 C 11 12 58.17 +42 55 59.4 m 379
2003-12-03 19:25:14 C 11 13 19.32 +42 56 41.8 m 379
2003-12-03 19:28:24 C 11 13 22.38 +42 56 48.4 m 379
2003-12-04 10:38:47 C 11 28 23.70 +43 19 38.4 17.2 c 704
2003-12-04 10:54:46 C 11 28 38.74 +43 20 01.4 17.5 c 704
2003-12-04 11:10:44 C 11 28 53.73 +43 20 24.4 17.6 c 704
2003-12-04 11:26:38 C 11 29 08.63 +43 20 46.4 17.2 c 704
2003-12-04 11:42:59 C 11 29 23.89 +43 21 08.9 17.4 c 704
2003-12-05 10:48:19 C 11 51 00.67 +43 40 15.7 16.9 c 704
2003-12-05 11:13:15 C 11 51 22.44 +43 40 32.6 17.2 c 704
2003-12-05 11:36:54 C 11 51 43.06 +43 40 48.1 17.0 c 704
2003-12-06 10:39:56 C 12 11 39.92 +43 44 27.6 17.1 c 704
2003-12-06 10:59:07 C 12 11 55.42 +43 44 29.5 17.6 c 704
2003-12-06 11:16:43 C 12 12 09.62 +43 44 31.4 18.0 c 704
2003-12-06 11:33:06 C 12 12 22.68 +43 44 31.8 17.4 c 704
2003-12-06 11:49:43 C 12 12 35.95 +43 44 32.6 17.5 c 704
2003-12-17 11:35:04 C 14 23 27.78 +38 23 29.2 17.9 c 704
2003-12-17 11:54:02 C 14 23 32.77 +38 23 05.3 18.1 c 704
2003-12-17 12:12:51 C 14 23 37.74 +38 22 41.8 18.2 c 704
2003-12-17 12:31:36 C 14 23 42.62 +38 22 18.0 18.2 c 704
2004-02-16 10:46:41 C 16 34 01.09 +19 01 07.3 19.7 c 704
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)