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
2019-05-09 09:35:21 C 16 01 36.28 -11 06 28.3 V 703
2019-05-09 09:43:51 C 16 01 35.27 -11 06 33.7 V 703
2019-05-09 09:52:22 C 16 01 34.37 -11 06 39.2 V 703
2019-05-09 09:54:59 C 16 01 34.91 -11 06 36.8 V T08
2019-05-09 09:57:39 C 16 01 34.60 -11 06 39.6 V T08
2019-05-09 10:00:52 C 16 01 33.42 -11 06 45.0 V 703
2019-05-09 10:08:25 C 16 01 33.38 -11 06 46.6 V T08
2019-05-09 10:30:37 C 16 01 30.89 -11 07 01.2 V T08
2019-05-11 10:45:53 C 15 56 19.75 -11 38 16.1 V T05
2019-05-11 10:47:25 C 15 56 19.589 -11 38 17.03 U F51
2019-05-11 10:53:02 C 15 56 18.98 -11 38 20.3 V T05
2019-05-11 11:01:40 C 15 56 18.01 -11 38 26.2 V T05
2019-05-11 11:08:19 C 15 56 17.239 -11 38 30.51 U F51
2019-05-11 11:18:40 C 15 56 16.09 -11 38 37.5 V T05
2019-05-11 11:29:11 C 15 56 14.892 -11 38 43.91 U F51
2019-05-12 22:49:29 C 15 52 28.72 -12 01 24.3 o Z22
2019-05-12 23:01:03 C 15 52 27.46 -12 01 32.0 o Z22
2019-05-13 10:35:34 C 15 51 13.15 -12 08 35.0 q E89
2019-05-13 11:11:00 C 15 51 09.27 -12 08 57.1 q E89
2019-05-15 05:40:46 C 15 46 39.63 -12 36 06.8 V 703
2019-05-15 05:48:52 C 15 46 38.69 -12 36 10.8 V 703
2019-05-15 05:56:59 C 15 46 37.92 -12 36 15.8 V 703
2019-05-15 06:05:06 C 15 46 37.01 -12 36 20.8 V 703
2019-05-15 09:17:51 C 15 46 16.74 -12 38 18.9 V T05
2019-05-15 09:22:40 C 15 46 16.20 -12 38 21.5 V T05
2019-05-15 09:31:19 C 15 46 15.24 -12 38 26.9 V T05
2019-05-15 09:50:24 C 15 46 13.15 -12 38 38.9 V T05
2019-05-22 11:26:49 C 15 29 13.12 -14 20 21.2 V T05
2019-05-22 11:27:28 C 15 29 13.05 -14 20 21.3 V T05
2019-05-22 11:34:54 C 15 29 12.30 -14 20 25.9 V T05
2019-05-22 11:48:21 C 15 29 10.97 -14 20 33.5 V T05
2019-05-22 11:49:01 C 15 29 10.90 -14 20 33.8 V T05
2019-05-23 11:41:34 C 15 26 57.44 -14 34 06.6 V T05
2019-05-23 11:45:46 C 15 26 57.02 -14 34 09.4 V T05
2019-05-23 11:59:34 C 15 26 55.69 -14 34 16.3 V T05
2019-05-23 12:23:28 C 15 26 53.40 -14 34 30.1 V T05
2019-05-25 09:04:24 C 15 22 52.773 -14 59 18.70 U F52
2019-05-25 09:23:00 C 15 22 51.049 -14 59 28.93 U F52
2019-05-25 09:41:59 C 15 22 49.293 -14 59 39.31 U F52
2019-05-25 10:00:09 C 15 22 47.613 -14 59 49.18 U F52
2019-05-27 09:18:45 C 15 18 44.94 -15 25 16.2 V T05
2019-05-27 09:22:47 C 15 18 44.56 -15 25 18.6 V T05
2019-05-27 09:30:16 C 15 18 43.89 -15 25 22.7 V T05
2019-05-27 09:54:50 C 15 18 41.76 -15 25 35.8 V T05
2019-05-28 06:10:02 C 15 17 02.23 -15 36 17.1 V G96
2019-05-28 06:25:30 C 15 17 00.90 -15 36 25.3 V G96
2019-05-28 06:33:13 C 15 17 00.24 -15 36 29.2 V G96
2019-05-29 08:17:14 C 15 14 56.86 -15 49 48.5 V 703
2019-05-29 08:24:48 C 15 14 56.32 -15 49 50.8 V 703
2019-05-29 08:32:22 C 15 14 55.75 -15 49 54.6 V 703
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)