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
2024-02-29 19:25:14 S 16 52 48.41 -01 57 27.6 L C51
2024-02-29 22:30:37 S 16 53 00.00 -01 58 36.2 L C51
2024-03-01 01:36:11 S 16 53 11.49 -01 59 46.9 L C51
2024-03-01 03:09:31 S 16 53 17.23 -02 00 20.1 L C51
2024-03-01 04:41:33 S 16 53 22.89 -02 00 56.5 L C51
2024-03-01 06:14:54 S 16 53 28.65 -02 01 30.3 L C51
2024-03-01 07:46:56 S 16 53 34.35 -02 02 05.1 L C51
2024-03-01 09:20:28 S 16 53 40.16 -02 02 37.5 L C51
2024-03-01 10:52:20 S 16 53 45.75 -02 03 15.0 L C51
2024-03-01 12:25:50 S 16 53 51.50 -02 03 48.5 L C51
2024-03-01 13:57:43 S 16 53 57.07 -02 04 23.5 L C51
2024-03-01 13:57:54 S 16 53 57.10 -02 04 24.2 L C51
2024-03-01 15:31:14 S 16 54 02.79 -02 04 57.4 L C51
2024-03-01 21:42:00 S 16 54 25.36 -02 07 15.6 L C51
2024-03-02 00:47:33 S 16 54 36.53 -02 08 24.6 L C51
2024-03-04 22:19:20 S 16 58 39.25 -02 33 59.9 L C51
2024-03-05 01:24:43 S 16 58 49.58 -02 35 07.2 L C51
2024-03-05 04:30:06 S 16 58 59.89 -02 36 14.9 L C51
2024-03-05 07:35:30 S 16 59 10.15 -02 37 22.2 L C51
2024-03-05 07:35:40 S 16 59 10.16 -02 37 21.8 L C51
2024-03-05 12:13:39 S 16 59 25.49 -02 39 03.0 L C51
2024-03-05 13:46:26 S 16 59 30.55 -02 39 37.2 L C51
2024-03-05 15:19:03 S 16 59 35.64 -02 40 10.6 L C51
2024-03-05 16:51:49 S 16 59 40.69 -02 40 44.4 L C51
2024-03-05 18:24:26 S 16 59 45.75 -02 41 18.4 L C51
2024-03-05 19:57:12 S 16 59 50.81 -02 41 51.8 L C51
2024-03-05 21:29:48 S 16 59 55.84 -02 42 26.0 L C51
2024-03-05 21:29:59 S 16 59 55.83 -02 42 25.8 L C51
2024-03-06 00:35:22 S 17 00 05.90 -02 43 33.4 L C51
2024-03-06 06:46:09 S 17 00 25.89 -02 45 47.6 L C51
2024-03-06 09:51:32 S 17 00 35.81 -02 46 55.4 L C51
2024-03-06 12:56:55 S 17 00 45.71 -02 48 02.6 L C51
2024-05-02 11:39:40 C 16 43 02.529 -13 08 31.60 X F51
2024-05-02 11:56:10 C 16 43 00.955 -13 08 41.74 X F51
2024-05-02 12:12:41 C 16 42 59.376 -13 08 51.83 X F51
2024-05-02 12:29:10 C 16 42 57.803 -13 09 01.91 X F51
2024-05-06 12:58:31 C 16 33 49.550 -14 08 07.50 X F51
2024-05-06 13:14:37 C 16 33 47.890 -14 08 17.30 X F51
2024-05-06 13:30:44 C 16 33 46.235 -14 08 27.05 X F51
2024-05-06 22:01:17 C 16 32 56.849 -14 13 23.95 V M22
2024-05-06 22:03:54 C 16 32 56.587 -14 13 25.21 V M22
2024-05-06 22:08:35 C 16 32 56.098 -14 13 28.13 V M22
2024-05-06 22:16:25 C 16 32 55.289 -14 13 33.67 V M22
2024-05-08 23:00:36 C 16 28 01.697 -14 43 16.36 V M22
2024-05-08 23:03:14 C 16 28 01.394 -14 43 17.83 V M22
2024-05-08 23:07:50 C 16 28 00.919 -14 43 20.53 V M22
2024-05-08 23:15:07 C 16 28 00.154 -14 43 25.54 V M22
2024-05-09 08:54:24 C 16 27 00.896 -14 49 34.61 V G96
2024-05-09 09:01:51 C 16 27 00.104 -14 49 39.11 V G96
2024-05-09 09:09:18 C 16 26 59.309 -14 49 43.57 V G96
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)