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
2014-06-30 06:51:57 C 14 34 12.892 -19 04 55.84 L F51
2014-06-30 07:09:04 C 14 34 13.071 -19 05 02.98 L F51
2014-06-30 07:26:11 C 14 34 13.261 -19 05 10.18 L F51
2018-09-13 11:41:50 C 04 25 04.32 -00 20 21.3 U G96
2018-09-13 11:48:55 C 04 25 05.11 -00 20 19.5 U G96
2018-09-13 11:56:01 C 04 25 05.94 -00 20 18.1 U G96
2018-09-13 12:03:05 C 04 25 06.76 -00 20 16.2 U G96
2018-09-21 10:03:44 C 04 48 37.17 +00 30 28.2 V 703
2018-09-21 10:11:39 C 04 48 38.20 +00 30 29.8 V 703
2018-09-21 10:27:29 C 04 48 40.09 +00 30 32.1 V 703
2018-09-21 14:10:08 C 04 49 08.793 +00 31 42.43 U F52
2018-09-21 14:26:54 C 04 49 10.895 +00 31 47.56 U F52
2018-09-21 14:43:38 C 04 49 13.001 +00 31 52.44 U F52
2018-10-04 14:15:10 C 05 33 17.963 +02 26 06.31 U F52
2018-10-04 14:31:12 C 05 33 20.379 +02 26 13.60 U F52
2018-10-04 14:47:17 C 05 33 22.804 +02 26 20.86 U F52
2018-10-04 15:03:21 C 05 33 25.231 +02 26 28.14 U F52
2018-11-02 10:02:43 C 08 01 23.62 +11 10 53.2 V 703
2018-11-02 10:11:23 C 08 01 26.05 +11 11 02.0 V 703
2018-11-02 10:18:33 C 08 01 28.20 +11 11 10.6 V 703
2018-11-04 09:53:59 C 08 15 38.07 +12 01 38.7 V 703
2018-11-04 10:01:32 C 08 15 40.23 +12 01 48.1 V 703
2018-11-04 10:16:38 C 08 15 44.69 +12 02 02.8 V 703
2018-11-09 11:24:46 C 08 54 11.58 +14 09 53.7 V G96
2018-11-09 11:31:38 C 08 54 13.79 +14 10 00.9 V G96
2018-11-09 11:38:30 C 08 54 16.02 +14 10 08.0 V G96
2018-11-09 11:45:20 C 08 54 18.21 +14 10 15.1 V G96
2018-11-11 10:06:43 C 09 09 48.59 +14 56 54.4 V 703
2018-11-11 10:14:13 C 09 09 51.12 +14 57 02.0 V 703
2018-11-11 10:21:44 C 09 09 53.61 +14 57 09.6 V 703
2018-11-11 10:29:15 C 09 09 56.14 +14 57 16.6 V 703
2018-11-15 00:26:35 S 09 39 25.31 +16 17 12.2 L C51
2018-11-15 03:34:22 S 09 40 30.63 +16 19 51.6 L C51
2018-11-15 06:43:24 S 09 41 36.44 +16 22 33.9 L C51
2018-11-15 09:51:55 S 09 42 42.11 +16 25 13.8 L C51
2018-11-15 12:59:30 S 09 43 47.46 +16 27 49.6 L C51
2018-11-15 14:34:29 S 09 44 20.587 +16 29 10.50 L C51
2018-11-15 16:08:44 S 09 44 53.45 +16 30 29.4 L C51
2018-11-15 17:42:48 S 09 45 26.26 +16 31 46.9 L C51
2018-11-15 19:17:03 S 09 45 59.13 +16 33 05.2 L C51
2018-11-15 20:51:18 S 09 46 32.03 +16 34 22.9 L C51
2018-11-15 22:25:33 S 09 47 04.93 +16 35 40.4 L C51
2018-11-15 23:59:37 S 09 47 37.77 +16 36 57.2 L C51
2018-11-16 03:07:23 S 09 48 43.34 +16 39 28.4 L C51
2018-11-16 06:16:37 S 09 49 49.44 +16 42 03.3 L C51
2018-11-16 09:24:56 S 09 50 55.27 +16 44 34.1 L C51
2018-11-16 12:33:27 S 09 52 01.17 +16 47 04.3 L C51
2018-11-16 15:41:45 S 09 53 07.013 +16 49 32.88 L C51
2019-02-26 01:38:36 S 16 43 29.638 +02 41 10.28 L C51
2019-02-26 04:47:06 S 16 43 40.730 +02 39 57.38 L C51
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)