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
2013-11-14 10:04:46 C 08 40 38.37 +13 57 39.5 q 703
2013-11-14 10:12:16 C 08 40 41.24 +13 57 53.9 q 703
2013-12-05 03:06:51 C 12 10 32.22 +23 43 36.7 q 160
2013-12-05 03:10:22 C 12 10 33.46 +23 43 37.1 q 160
2013-12-05 03:13:53 C 12 10 34.74 +23 43 36.2 q 160
2014-02-20 11:57:24 C 16 34 30.90 +08 33 44.8 q G96
2014-02-20 12:03:57 C 16 34 31.25 +08 33 42.0 q G96
2014-02-20 12:10:29 C 16 34 31.57 +08 33 39.1 q G96
2014-03-02 05:58:24 S 16 45 49.42 +06 59 44.1 L C51
2014-03-02 09:08:11 S 16 45 57.01 +06 58 31.9 L C51
2014-03-02 12:17:47 S 16 46 04.522 +06 57 18.68 L C51
2014-03-02 15:27:34 S 16 46 12.00 +06 56 05.9 L C51
2014-03-02 18:37:10 S 16 46 19.41 +06 54 52.9 L C51
2014-03-02 21:46:46 S 16 46 26.777 +06 53 40.09 L C51
2014-03-02 21:46:57 S 16 46 26.806 +06 53 40.13 L C51
2014-03-02 23:21:45 S 16 46 30.473 +06 53 03.91 L C51
2014-03-03 00:56:11 S 16 46 34.08 +06 52 26.9 L C51
2014-03-03 02:30:59 S 16 46 37.74 +06 51 51.3 L C51
2014-03-03 04:05:47 S 16 46 41.33 +06 51 14.4 L C51
2014-03-03 05:40:36 S 16 46 44.99 +06 50 37.9 L C51
2014-03-03 08:50:22 S 16 46 52.19 +06 49 25.2 L C51
2014-03-03 11:59:59 S 16 46 59.34 +06 48 13.2 L C51
2014-03-03 15:09:45 S 16 47 06.47 +06 47 00.8 L C51
2014-03-03 18:19:22 S 16 47 13.56 +06 45 48.4 L C51
2014-03-25 09:46:35 C 16 54 24.78 +03 28 16.6 V G45
2014-03-25 10:13:02 C 16 54 24.31 +03 28 06.2 V G45
2014-03-25 10:31:09 C 16 54 24.01 +03 27 58.6 V G45
2014-03-25 10:52:20 C 16 54 23.62 +03 27 50.2 V G45
2014-03-29 10:06:38 C 16 52 35.11 +02 48 20.3 R G45
2014-03-29 10:23:02 C 16 52 34.69 +02 48 13.1 R G45
2014-03-29 10:39:25 C 16 52 34.16 +02 48 06.0 R G45
2014-03-29 10:55:53 C 16 52 33.68 +02 47 59.1 R G45
2014-03-29 11:12:17 C 16 52 33.19 +02 47 52.0 R G45
2014-03-29 11:28:40 C 16 52 32.69 +02 47 44.8 R G45
2014-03-29 11:45:04 C 16 52 32.21 +02 47 37.7 R G45
2014-03-30 09:57:38 C 16 51 57.29 +02 38 04.0 R G45
2014-03-30 10:14:13 C 16 51 56.76 +02 37 56.6 R G45
2014-03-30 10:30:40 C 16 51 56.21 +02 37 50.2 R G45
2014-03-30 10:47:04 C 16 51 55.67 +02 37 42.7 R G45
2014-03-30 11:03:27 C 16 51 55.19 +02 37 35.6 R G45
2014-03-30 11:19:52 C 16 51 54.60 +02 37 27.6 R G45
2014-03-30 11:36:19 C 16 51 54.05 +02 37 21.0 R G45
2014-04-04 20:00:36 C 16 47 12.54 +01 38 47.5 q D29
2014-04-04 20:23:30 C 16 47 11.35 +01 38 37.0 q D29
2014-04-04 20:46:25 C 16 47 10.40 +01 38 26.9 q D29
2014-04-20 09:14:32 C 16 21 27.53 -01 50 54.5 u H21
2014-04-20 09:18:44 C 16 21 27.09 -01 50 56.3 u H21
2014-04-20 09:22:51 C 16 21 26.71 -01 50 58.6 u H21
2014-04-20 09:27:06 C 16 21 26.28 -01 51 01.1 u H21
2014-04-20 09:31:27 C 16 21 25.88 -01 51 03.6 u H21
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)