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
2001-07-14 15:31:44 C 20 38 56.55 -42 04 08.4 c 474
2001-07-15 13:54:19 C 20 37 05.98 -42 17 54.2 c 474
2001-07-15 14:00:59 C 20 37 05.46 -42 17 57.4 c 474
2001-07-15 14:05:09 C 20 37 05.05 -42 18 01.1 c 474
2001-07-15 14:15:49 C 20 37 04.15 -42 18 06.4 c 474
2001-07-15 14:31:18 C 20 37 02.84 -42 18 17.1 c 474
2003-09-19 11:25:01 C 03 45 00.20 -09 25 46.4 d 291
2003-09-19 11:32:00 C 03 45 00.69 -09 25 47.4 d 291
2003-09-19 11:38:53 C 03 45 01.19 -09 25 48.4 d 291
2003-09-28 10:45:54 C 04 01 08.62 -09 53 48.0 o 699
2003-09-28 11:05:00 C 04 01 09.99 -09 53 51.8 o 699
2003-09-28 11:24:12 C 04 01 11.38 -09 53 54.0 o 699
2003-09-28 11:43:20 C 04 01 12.69 -09 53 55.5 o 699
2003-10-18 09:11:56 C 04 37 43.97 -10 08 29.5 18.8 c 704
2003-10-18 09:28:28 C 04 37 45.27 -10 08 26.9 18.7 c 704
2003-10-18 09:44:49 C 04 37 46.49 -10 08 24.4 19.2 c 704
2003-10-18 10:01:05 C 04 37 47.73 -10 08 21.5 19.5 c 704
2003-10-22 13:43:12 C 04 46 11.88 -09 49 17.4 18.5 c 608
2003-10-22 13:55:42 C 04 46 12.87 -09 49 14.1 18.4 c 608
2003-10-22 14:08:05 C 04 46 13.82 -09 49 10.9 18.5 c 608
2003-10-24 09:49:32 C 04 50 06.96 -09 36 24.7 c 711
2003-10-24 09:58:51 C 04 50 07.71 -09 36 21.6 c 711
2003-10-24 10:09:52 C 04 50 08.63 -09 36 18.1 c 711
2003-10-24 10:18:21 C 04 50 09.35 -09 36 15.2 c 711
2003-11-02 08:41:04 C 05 12 11.96 -07 31 47.9 c 670
2003-11-02 09:44:19 C 05 12 18.83 -07 30 51.2 c 670
2003-11-02 10:40:05 C 05 12 24.92 -07 30 00.5 c 670
2003-11-06 16:30:36 C 05 25 57.31 -05 34 15.2 355
2003-11-06 16:43:26 C 05 25 59.04 -05 33 57.0 355
2003-11-06 16:47:43 C 05 25 59.57 -05 33 51.5 355
2003-11-17 09:50:24 C 06 21 55.72 +05 13 37.5 c 670
2003-11-17 12:45:45 C 06 22 49.47 +05 25 47.4 c 670
2003-11-20 07:40:09 C 06 48 09.72 +10 48 09.8 r 750
2003-11-20 07:42:17 C 06 48 10.60 +10 48 21.4 r 750
2003-11-20 07:51:42 C 06 48 14.52 +10 49 13.5 r 750
2003-11-20 07:55:09 C 06 48 15.96 +10 49 32.1 r 750
2003-11-22 09:17:11 C 07 12 05.10 +15 46 24.5 c H41
2003-11-22 09:21:11 C 07 12 07.29 +15 46 51.9 c H41
2003-11-22 09:24:40 C 07 12 09.08 +15 47 14.9 c H41
2003-11-22 09:27:24 C 07 12 10.29 +15 47 31.7 c H41
2003-11-22 09:30:05 C 07 12 11.80 +15 47 49.6 c H41
2003-11-22 09:39:46 C 07 12 16.75 +15 48 52.9 c H41
2003-11-22 09:43:01 C 07 12 18.42 +15 49 14.1 c H41
2003-11-22 09:46:12 C 07 12 20.09 +15 49 35.1 c H41
2003-11-22 17:45:14 C 07 16 43.72 +16 42 17.7 m 379
2003-11-22 18:11:18 C 07 16 57.55 +16 45 12.0 m 379
2003-11-22 18:12:36 C 07 16 58.22 +16 45 20.8 m 379
2003-11-22 18:15:52 C 07 16 59.93 +16 45 42.2 m 379
2003-11-22 18:17:10 C 07 17 00.64 +16 45 50.9 m 379
2003-11-23 05:39:39 C 07 23 37.69 +18 03 13.8 d H72
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)