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
2019-02-26 06:21:21 S 16 43 46.303 +02 39 20.30 L C51
2019-03-02 06:09:00 S 16 49 05.83 +02 02 40.1 L C51
2019-03-02 06:09:11 S 16 49 05.80 +02 02 40.3 L C51
2019-03-02 09:17:29 S 16 49 15.66 +02 01 29.2 L C51
2019-03-02 12:25:59 S 16 49 25.44 +02 00 18.5 L C51
2019-03-02 15:34:18 S 16 49 35.19 +01 59 07.5 L C51
2019-03-02 18:42:48 S 16 49 44.91 +01 57 56.6 L C51
2019-03-02 20:17:04 S 16 49 49.75 +01 57 21.3 L C51
2019-03-02 21:51:08 S 16 49 54.59 +01 56 45.8 L C51
2019-03-02 21:51:19 S 16 49 54.59 +01 56 45.9 L C51
2019-03-02 23:25:22 S 16 49 59.40 +01 56 10.5 L C51
2019-03-03 00:59:37 S 16 50 04.20 +01 55 35.0 L C51
2019-03-03 02:33:53 S 16 50 08.993 +01 54 59.69 L C51
2019-03-03 04:07:24 S 16 50 13.75 +01 54 23.7 L C51
2019-03-03 05:42:23 S 16 50 18.57 +01 53 49.3 L C51
2019-03-03 07:16:26 S 16 50 23.33 +01 53 13.9 L C51
2019-03-03 08:50:42 S 16 50 28.09 +01 52 38.4 L C51
2019-03-03 15:07:31 S 16 50 47.01 +01 50 17.5 L C51
2019-03-03 18:16:01 S 16 50 56.42 +01 49 06.0 L C51
2019-03-03 21:24:31 S 16 51 05.75 +01 47 57.0 L C51
2019-03-14 14:55:30 C 17 01 18.29 +00 13 38.5 V T08
2019-03-14 15:08:10 C 17 01 18.65 +00 13 33.1 V T08
2019-03-14 15:12:15 C 17 01 18.84 +00 13 33.1 V T08
2019-03-14 15:25:02 C 17 01 19.15 +00 13 24.4 V T08
2019-03-14 15:32:46 C 17 01 19.22 +00 13 24.0 V T08
2019-03-18 11:25:38 C 17 03 36.50 -00 20 16.1 V G96
2019-03-18 11:32:24 C 17 03 36.64 -00 20 19.2 V G96
2019-03-18 11:39:09 C 17 03 36.76 -00 20 21.8 V G96
2019-03-18 11:45:55 C 17 03 36.84 -00 20 24.0 V G96
2019-04-15 09:58:07 C 16 52 36.26 -05 11 07.6 V G96
2019-04-15 10:05:39 C 16 52 35.76 -05 11 11.4 V G96
2019-04-15 10:13:11 C 16 52 35.31 -05 11 15.3 V G96
2019-04-15 10:20:43 C 16 52 34.84 -05 11 19.4 V G96
2019-04-27 12:25:28 C 16 30 36.65 -08 01 29.9 V T08
2019-04-27 12:37:58 C 16 30 35.36 -08 01 39.2 V T08
2019-04-27 12:49:44 C 16 30 34.27 -08 01 47.4 V T08
2019-04-27 13:03:21 C 16 30 33.02 -08 01 54.9 V T08
2019-04-28 01:38:59 C 16 29 23.25 -08 09 58.0 V C95
2019-04-28 01:45:57 C 16 29 22.57 -08 10 02.8 V C95
2019-04-28 01:53:10 C 16 29 21.86 -08 10 07.0 V C95
2019-05-01 12:18:10 C 16 21 24.36 -09 02 51.0 V T08
2019-05-01 12:30:53 C 16 21 23.07 -09 02 59.9 V T08
2019-05-01 12:44:21 C 16 21 21.61 -09 03 08.9 V T08
2019-05-01 12:57:03 C 16 21 20.25 -09 03 17.0 V T08
2019-05-03 09:22:45 C 16 16 50.38 -09 32 13.7 V G96
2019-05-03 09:30:10 C 16 16 49.58 -09 32 18.5 V G96
2019-05-03 09:37:36 C 16 16 48.81 -09 32 23.4 V G96
2019-05-04 17:36:42 C 16 13 30.25 -09 53 17.1 q D29
2019-05-04 17:57:03 C 16 13 28.03 -09 53 30.9 q D29
2019-05-04 18:17:25 C 16 13 25.84 -09 53 44.0 q D29
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)