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
2014-04-21 08:11:20 C 16 19 20.96 -02 05 47.4 o 691
2014-04-21 08:33:06 C 16 19 18.81 -02 06 01.8 o 691
2014-04-21 08:54:51 C 16 19 16.68 -02 06 16.3 o 691
2014-04-22 07:57:30 C 16 17 05.86 -02 21 30.2 o 691
2014-04-22 08:22:56 C 16 17 03.31 -02 21 47.2 o 691
2014-04-22 08:48:24 C 16 17 00.79 -02 22 04.2 o 691
2014-04-24 09:30:42 C 16 12 13.61 -02 54 58.6 o 691
2014-04-24 09:56:10 C 16 12 11.00 -02 55 14.8 o 691
2014-04-24 10:21:38 C 16 12 08.22 -02 55 33.3 o 691
2014-04-29 18:13:13 C 15 58 45.05 -04 25 46.6 q D29
2014-04-29 18:37:33 C 15 58 42.35 -04 26 04.4 q D29
2014-04-29 19:01:54 C 15 58 39.58 -04 26 22.0 q D29
2014-04-30 09:52:26 C 15 57 03.984 -04 37 03.97 L F51
2014-04-30 10:09:40 C 15 57 02.027 -04 37 16.50 L F51
2014-04-30 10:26:54 C 15 57 00.058 -04 37 29.11 L F51
2014-05-02 06:33:45 C 15 52 10.43 -05 09 46.4 o 691
2014-05-02 06:59:11 C 15 52 07.53 -05 10 04.9 o 691
2014-05-02 07:24:36 C 15 52 04.52 -05 10 23.6 o 691
2014-05-05 09:13:08 C 15 43 55.15 -06 04 52.9 q G96
2014-05-05 09:20:27 C 15 43 54.29 -06 04 58.3 q G96
2014-05-05 09:27:47 C 15 43 53.46 -06 05 03.7 q G96
2014-05-07 07:50:56 C 15 38 47.53 -06 39 25.6 q 703
2014-05-07 08:00:05 C 15 38 46.54 -06 39 32.3 q 703
2014-05-07 08:09:14 C 15 38 45.47 -06 39 39.1 q 703
2014-05-10 08:22:05 C 15 30 55.44 -07 32 58.8 q 703
2014-05-10 08:30:44 C 15 30 54.48 -07 33 05.0 q 703
2014-05-10 08:39:23 C 15 30 53.51 -07 33 11.7 q 703
2014-05-10 08:48:01 C 15 30 52.53 -07 33 18.0 q 703
2014-05-10 10:04:03 C 15 30 44.930 -07 34 11.08 L F51
2014-05-10 10:21:23 C 15 30 42.981 -07 34 23.89 L F51
2014-05-10 10:38:37 C 15 30 41.050 -07 34 36.53 L F51
2014-05-10 10:55:52 C 15 30 39.115 -07 34 49.21 L F51
2014-05-22 09:48:46 C 15 03 00.477 -10 56 19.58 L F51
2014-05-22 10:08:39 C 15 02 58.733 -10 56 32.67 L F51
2014-05-22 10:47:21 C 15 02 55.341 -10 56 58.07 L F51
2014-05-27 08:15:22 C 14 53 58.254 -12 12 04.92 L F51
2014-05-27 08:31:19 C 14 53 57.081 -12 12 14.78 L F51
2014-05-27 09:03:17 C 14 53 54.714 -12 12 34.62 L F51
2014-06-02 04:31:37 C 14 45 24.85 -13 35 38.0 R G45
2014-06-02 04:48:19 C 14 45 23.96 -13 35 47.7 R G45
2014-06-02 05:21:33 C 14 45 22.11 -13 36 06.1 R G45
2014-06-02 05:38:17 C 14 45 21.14 -13 36 16.5 R G45
2014-06-06 07:38:19 C 14 40 47.951 -14 30 47.38 L F51
2014-06-06 07:58:44 C 14 40 47.041 -14 30 58.47 L F51
2014-06-06 08:19:07 C 14 40 46.123 -14 31 09.46 L F51
2014-06-20 07:03:31 C 14 33 13.079 -17 18 26.45 L F51
2014-06-20 07:20:40 C 14 33 12.923 -17 18 34.40 L F51
2014-06-20 07:38:02 C 14 33 12.767 -17 18 42.35 L F51
2014-06-20 07:55:08 C 14 33 12.605 -17 18 50.29 L F51
2014-06-30 06:34:50 C 14 34 12.715 -19 04 48.52 L F51
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)