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
2024-05-09 09:16:44 C 16 26 58.528 -14 49 48.11 V G96
2024-05-12 06:15:01 C 16 19 50.587 -15 30 55.80 V W68
2024-05-12 06:20:12 C 16 19 50.016 -15 30 59.08 V W68
2024-05-12 06:27:41 C 16 19 49.198 -15 31 03.76 V W68
2024-05-12 07:13:02 C 16 19 44.297 -15 31 30.11 V W68
2024-05-13 23:48:07 C 16 15 29.309 -15 55 24.46 V M22
2024-05-13 23:52:50 C 16 15 28.855 -15 55 27.19 V M22
2024-05-14 00:43:51 C 16 15 23.249 -15 55 57.25 V M22
2024-05-14 00:58:10 C 16 15 21.667 -15 56 05.57 V M22
2024-05-14 23:36:41 C 16 12 59.170 -16 09 14.90 V M22
2024-05-14 23:41:14 C 16 12 58.654 -16 09 17.53 V M22
2024-05-14 23:51:48 C 16 12 57.523 -16 09 23.44 V M22
2024-05-15 00:17:59 C 16 12 54.650 -16 09 38.63 V M22
2024-05-17 16:43:49 C 16 06 09.13 -16 46 32.4 V D29
2024-05-17 17:12:27 C 16 06 06.02 -16 46 47.7 V D29
2024-05-17 17:42:13 C 16 06 02.80 -16 47 04.7 V D29
2024-05-18 21:40:10 C 16 03 08.674 -17 02 14.21 V M22
2024-05-18 21:42:52 C 16 03 08.412 -17 02 15.68 V M22
2024-05-18 21:46:52 C 16 03 07.985 -17 02 17.84 V M22
2024-05-18 21:54:08 C 16 03 07.195 -17 02 21.16 V M22
2024-05-19 06:38:45 C 16 02 12.826 -17 07 25.10 V G96
2024-05-19 06:46:23 C 16 02 11.998 -17 07 29.17 V G96
2024-05-19 06:54:00 C 16 02 11.191 -17 07 33.28 V G96
2024-05-19 07:01:37 C 16 02 10.363 -17 07 37.45 V G96
2024-05-20 21:20:04 C 15 58 14.354 -17 27 53.75 V M22
2024-05-20 21:22:45 C 15 58 14.093 -17 27 55.69 V M22
2024-05-20 21:26:44 C 15 58 13.666 -17 27 58.10 V M22
2024-05-20 22:04:47 C 15 58 09.660 -17 28 18.01 V M22
2024-05-21 02:59:18 B 15 57 39.57 -17 30 57.6 Z Y05
2024-05-21 03:08:05 B 15 57 38.62 -17 31 02.7 Z Y05
2024-05-21 03:16:35 B 15 57 37.72 -17 31 06.8 Z Y05
2024-06-01 03:52:34 C 15 33 04.994 -19 36 17.17 V W68
2024-06-01 03:57:49 C 15 33 04.582 -19 36 20.02 V W68
2024-06-01 04:07:28 C 15 33 03.720 -19 36 23.51 V W68
2024-06-01 04:53:04 C 15 32 59.796 -19 36 42.37 V W68
2024-06-02 08:08:28 C 15 30 49.713 -19 48 11.35 X F51
2024-06-02 08:40:17 C 15 30 47.083 -19 48 24.48 X F51
2024-06-02 08:56:09 C 15 30 45.775 -19 48 31.00 X F51
2024-06-06 08:27:38 C 15 23 46.110 -20 25 54.29 X F52
2024-06-06 08:43:46 C 15 23 44.949 -20 26 00.37 X F52
2024-06-06 08:59:55 C 15 23 43.788 -20 26 06.41 X F52
2024-06-06 09:16:02 C 15 23 42.630 -20 26 12.44 X F52
2024-06-10 06:15:39 C 15 17 54.096 -20 59 49.42 V G96
2024-06-10 06:23:09 C 15 17 53.632 -20 59 52.04 V G96
2024-06-10 06:30:39 C 15 17 53.207 -20 59 54.49 V G96
2024-06-10 06:38:08 C 15 17 52.753 -20 59 56.69 V G96
2024-06-12 07:58:14 C 15 15 12.892 -21 16 46.93 X F52
2024-06-12 08:14:30 C 15 15 12.000 -21 16 52.39 X F52
2024-06-12 08:30:43 C 15 15 11.115 -21 16 57.89 X F52
2024-07-01 06:47:37 C 15 03 14.482 -23 32 35.71 X F52
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)