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
2004-02-16 11:03:27 C 16 34 01.66 +19 00 59.5 19.4 c 704
2004-02-16 11:20:11 C 16 34 02.20 +19 00 52.7 19.6 c 704
2004-02-16 11:36:54 C 16 34 02.69 +19 00 44.5 20.0 c 704
2004-02-16 11:53:44 C 16 34 03.27 +19 00 35.8 19.9 c 704
2004-03-30 08:54:47 C 16 28 50.69 +11 32 23.2 19.1 c 704
2004-03-30 09:08:28 C 16 28 49.81 +11 32 17.2 19.3 c 704
2004-03-30 09:23:30 C 16 28 48.76 +11 32 09.9 19.2 c 704
2004-03-30 09:38:14 C 16 28 47.75 +11 32 02.0 19.1 c 704
2004-03-30 09:53:40 C 16 28 46.67 +11 31 53.3 18.9 c 704
2004-04-02 00:37:54 C 16 24 35.61 +10 58 17.5 o 198
2004-04-02 00:40:26 C 16 24 35.42 +10 58 15.9 o 198
2004-04-02 00:42:59 C 16 24 35.23 +10 58 14.4 o 198
2004-04-15 07:15:53 C 15 55 52.85 +07 28 37.9 c 704
2004-04-15 07:31:26 C 15 55 51.19 +07 28 26.6 c 704
2004-04-15 07:46:59 C 15 55 49.40 +07 28 15.1 c 704
2004-04-15 08:02:32 C 15 55 47.61 +07 28 02.7 c 704
2004-04-15 08:18:07 C 15 55 45.87 +07 27 51.3 c 704
2004-04-21 10:36:39 C 15 39 23.20 +05 27 37.0 d 703
2004-04-21 10:46:41 C 15 39 21.99 +05 27 28.5 d 703
2004-04-21 10:56:40 C 15 39 20.79 +05 27 19.7 d 703
2004-04-21 11:06:48 C 15 39 19.61 +05 27 09.9 d 703
2004-04-26 07:11:08 C 15 25 49.10 +03 42 37.4 18.5 c 704
2004-04-26 07:25:53 C 15 25 47.27 +03 42 24.0 19.1 c 704
2004-04-26 07:40:41 C 15 25 45.49 +03 42 09.9 19.0 c 704
2004-04-26 08:13:27 C 15 25 41.44 +03 41 39.8 18.9 c 704
2004-05-14 05:59:29 C 14 40 54.04 -03 07 19.4 18.1 c 704
2004-05-14 06:13:36 C 14 40 52.77 -03 07 32.3 18.6 c 704
2004-05-14 06:27:17 C 14 40 51.56 -03 07 44.7 18.4 c 704
2004-05-14 06:41:00 C 14 40 50.37 -03 07 57.1 18.3 c 704
2004-05-14 06:54:37 C 14 40 49.13 -03 08 09.5 18.6 c 704
2004-05-19 06:13:05 C 14 31 38.80 -04 55 14.6 18.5 c 704
2004-05-19 06:26:25 C 14 31 37.88 -04 55 25.6 18.9 c 704
2004-05-19 06:39:46 C 14 31 36.89 -04 55 37.4 19.0 c 704
2004-05-19 06:53:06 C 14 31 35.86 -04 55 49.4 18.8 c 704
2004-05-19 07:06:38 C 14 31 34.87 -04 56 00.9 18.9 c 704
2004-05-22 05:59:38 C 14 26 59.09 -05 56 52.3 19.2 c 704
2004-05-22 06:12:21 C 14 26 58.30 -05 57 03.5 18.9 c 704
2004-05-22 06:26:42 C 14 26 57.39 -05 57 15.5 19.2 c 704
2004-05-22 06:39:13 C 14 26 56.55 -05 57 25.5 19.3 c 704
2004-05-22 06:51:47 C 14 26 55.77 -05 57 37.2 19.4 c 704
2008-10-06 11:27:04 C 04 37 10.52 -07 03 34.6 r 703
2008-10-06 11:36:39 C 04 37 11.46 -07 03 34.1 r 703
2008-10-06 11:46:07 C 04 37 12.32 -07 03 32.0 r 703
2008-10-06 11:55:44 C 04 37 13.11 -07 03 33.1 r 703
2008-10-22 08:42:06 C 05 19 56.13 -05 19 18.7 18.3 c 704
2008-10-22 08:58:43 C 05 19 58.22 -05 19 09.4 18.3 c 704
2008-10-22 09:15:11 C 05 20 00.26 -05 19 01.5 18.3 c 704
2008-10-22 09:31:39 C 05 20 02.26 -05 18 51.9 18.5 c 704
2008-10-30 09:22:24 C 05 49 08.58 -02 53 31.4 r 703
2008-10-30 09:32:55 C 05 49 10.27 -02 53 21.0 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)