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
2008-10-30 09:43:20 C 05 49 12.07 -02 53 10.3 r 703
2008-10-30 09:53:58 C 05 49 13.76 -02 52 58.6 r 703
2008-11-07 01:53:44 C 06 27 47.66 +01 28 40.9 17.3 r 084
2008-11-07 01:57:57 C 06 27 48.66 +01 28 48.8 17.2 r 084
2008-11-10 23:07:43 C 06 54 09.10 +04 52 19.9 r B67
2008-11-10 23:16:17 C 06 54 11.71 +04 52 41.7 r B67
2008-11-10 23:25:22 C 06 54 14.52 +04 53 04.0 r B67
2008-11-15 02:59:40 C 07 29 52.37 +09 38 10.6 c B37
2008-11-15 03:02:38 C 07 29 53.49 +09 38 20.0 c B37
2008-11-15 03:05:33 C 07 29 54.62 +09 38 29.4 c B37
2008-11-15 03:08:30 C 07 29 55.78 +09 38 39.1 c B37
2008-11-15 03:28:59 C 07 30 03.28 +09 39 39.4 v 204
2008-11-15 03:32:00 C 07 30 04.46 +09 39 49.1 v 204
2008-11-15 03:35:56 C 07 30 06.00 +09 40 02.1 v 204
2008-11-15 03:39:15 C 07 30 07.30 +09 40 12.6 v 204
2008-11-15 03:43:11 C 07 30 08.83 +09 40 25.3 v 204
2008-11-16 01:11:02 C 07 39 08.18 +10 51 18.7 r J52
2008-11-16 01:15:47 C 07 39 10.11 +10 51 34.9 r J52
2008-11-16 01:20:36 C 07 39 12.10 +10 51 52.0 r J52
2008-11-16 04:34:28 C 07 40 32.38 +11 02 51.1 r B19
2008-11-16 04:43:33 C 07 40 36.13 +11 03 22.2 r B19
2008-11-16 04:50:21 C 07 40 39.01 +11 03 45.4 r B19
2008-11-21 10:08:34 C 08 43 27.12 +18 46 25.2 r G96
2008-11-21 10:16:37 C 08 43 31.54 +18 46 56.4 r G96
2008-11-21 10:24:38 C 08 43 35.97 +18 47 27.4 r G96
2008-11-21 10:32:42 C 08 43 40.40 +18 47 58.6 r G96
2008-11-21 10:41:43 C 08 43 45.26 +18 48 32.6 r 703
2008-11-21 10:53:42 C 08 43 51.88 +18 49 19.2 r 703
2008-11-21 11:05:36 C 08 43 58.44 +18 50 05.3 r 703
2008-11-21 11:17:32 C 08 44 04.95 +18 50 50.8 r 703
2008-11-22 09:49:53 C 08 57 13.75 +20 16 32.5 r 703
2008-11-22 10:00:14 C 08 57 19.69 +20 17 12.2 r 703
2008-11-22 10:10:47 C 08 57 25.74 +20 17 52.3 r 703
2008-11-22 10:21:13 C 08 57 31.78 +20 18 32.6 r 703
2008-11-22 18:30:53 C 09 02 23.41 +20 49 13.3 r 379
2008-11-22 18:34:05 C 09 02 25.27 +20 49 24.9 r 379
2008-11-22 18:45:52 C 09 02 32.13 +20 50 09.8 r 379
2008-11-28 03:37:34 C 10 24 56.15 +27 46 15.1 r 106
2008-11-28 03:50:19 C 10 25 04.38 +27 46 48.3 r 106
2008-11-28 04:03:05 C 10 25 12.49 +27 47 20.4 r 106
2008-11-28 04:15:49 C 10 25 20.61 +27 47 53.2 r 106
2008-12-07 10:59:36 C 12 33 44.56 +31 54 00.7 r 703
2008-12-07 11:07:29 C 12 33 48.16 +31 54 01.0 r 703
2008-12-07 11:15:15 C 12 33 51.62 +31 54 02.4 r 703
2008-12-07 11:23:09 C 12 33 55.18 +31 54 03.2 r 703
2008-12-09 01:00:02 C 12 50 32.69 +31 49 27.2 c A24
2009-04-16 09:59:37 C 16 09 04.93 +03 40 17.9 r 703
2009-04-16 10:06:37 C 16 09 04.17 +03 40 13.5 r 703
2009-04-16 10:13:36 C 16 09 03.45 +03 40 09.9 r 703
2009-04-16 10:20:28 C 16 09 02.77 +03 40 05.3 r 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)