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
2019-06-01 08:49:59 C 15 09 34.809 -16 26 03.33 U F51
2019-06-01 09:06:06 C 15 09 33.612 -16 26 11.16 U F51
2019-06-01 09:22:13 C 15 09 32.411 -16 26 19.05 U F51
2019-06-02 06:02:23 C 15 08 07.21 -16 36 22.5 o 691
2019-06-02 06:38:09 C 15 08 04.64 -16 36 39.3 o 691
2019-06-02 07:12:12 C 15 08 02.22 -16 36 55.7 o 691
2019-06-03 06:48:00 C 15 06 28.77 -16 48 10.7 V G96
2019-06-03 06:55:31 C 15 06 28.26 -16 48 14.4 V G96
2019-06-03 07:03:02 C 15 06 27.75 -16 48 18.0 V G96
2019-06-03 07:10:34 C 15 06 27.25 -16 48 21.8 V G96
2019-06-03 08:43:53 C 15 06 21.541 -16 49 03.52 U F51
2019-06-03 08:59:45 C 15 06 20.451 -16 49 11.03 U F51
2019-06-03 09:15:32 C 15 06 19.371 -16 49 18.41 U F51
2019-06-05 07:45:58 C 15 03 27.716 -17 10 57.10 U F51
2019-06-05 08:01:58 C 15 03 26.711 -17 11 04.44 U F51
2019-06-05 08:33:55 C 15 03 24.699 -17 11 19.17 U F51
2019-06-08 07:47:00 C 14 59 31.753 -17 43 14.74 U F52
2019-06-08 08:03:02 C 14 59 30.886 -17 43 21.83 U F52
2019-06-08 08:18:57 C 14 59 30.024 -17 43 28.83 U F52
2019-06-08 08:34:55 C 14 59 29.160 -17 43 35.82 U F52
2021-06-13 13:56:38 C 21 45 43.435 -31 21 44.98 U F51
2021-06-13 14:11:51 C 21 45 43.581 -31 21 53.35 U F51
2021-06-13 14:27:05 C 21 45 43.702 -31 22 01.86 U F51
2021-07-17 11:30:14 C 21 24 40.348 -40 48 00.19 U F51
2021-07-17 11:54:30 C 21 24 38.632 -40 48 17.68 U F51
2021-07-17 12:06:38 C 21 24 37.774 -40 48 26.59 U F51
2021-08-07 09:22:01 C 20 42 23.376 -45 21 30.99 U F51
2021-08-07 09:33:16 C 20 42 22.293 -45 21 34.57 U F51
2021-08-07 09:44:34 C 20 42 21.204 -45 21 38.01 U F51
2023-09-12 14:02:25 C 04 43 04.159 +03 04 29.08 X F52
2023-09-12 14:19:11 C 04 43 06.351 +03 04 35.04 X F52
2023-09-12 14:36:02 C 04 43 08.538 +03 04 40.95 X F52
2023-09-19 10:44:01 C 05 05 53.408 +04 05 32.32 V G96
2023-09-19 10:51:30 C 05 05 54.463 +04 05 35.09 V G96
2023-09-19 10:59:00 C 05 05 55.532 +04 05 38.36 V G96
2023-09-19 11:06:27 C 05 05 56.569 +04 05 41.14 V G96
2023-11-04 01:04:38 S 08 54 42.83 +14 39 51.1 L C51
2023-11-04 04:10:56 S 08 55 36.63 +14 41 40.4 L C51
2023-11-04 07:17:03 S 08 56 30.45 +14 43 29.1 L C51
2023-11-04 10:23:10 S 08 57 24.35 +14 45 17.3 L C51
2023-11-04 10:23:21 S 08 57 24.38 +14 45 17.8 L C51
2023-11-04 13:29:28 S 08 58 18.32 +14 47 05.6 L C51
2023-11-04 16:35:35 S 08 59 12.35 +14 48 52.8 L C51
2023-11-04 22:48:00 S 09 01 00.53 +14 52 25.2 L C51
2023-11-05 00:21:09 S 09 01 27.64 +14 53 18.4 L C51
2023-11-12 20:45:55 C 09 57 29.01 +16 19 52.4 V O18
2023-11-12 20:56:10 C 09 57 32.04 +16 19 56.1 V O18
2023-11-12 21:06:23 C 09 57 35.07 +16 19 59.8 V O18
2024-02-29 13:14:27 S 16 52 25.27 -01 55 08.8 L C51
2024-02-29 16:19:50 S 16 52 36.85 -01 56 18.8 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)