2018 WD

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5185431000
Semi-major axis (a)1.9080382000 AU
Inclination (i)16.76830000°
Long. of Asc. Node (Ω)61.20621000°
Arg. of Perihelion (ω)40.47533000°
Mean Anomaly (M)223.37241000°
Mean Motion (n)0.3739585500°/day
Perihelion dist (q)0.91863820 AU
Aphelion dist (Q)2.89743820 AU
Orbital Period2.63560670 yr
Physical Parameters
H (abs. magnitude)24.30
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.310″
Uncertainty5
Orbit TypeApollo
MOID0.009363 AU
Observations Used70
Radar Obs Used2
Oppositions1
Arc Total
First Observation Used
Last Observation Used2018-11-25
Observations (70)
Date Type RA Dec Mag Band Observatory
2018-11-16 07:24:48 C 03 53 30.29 -22 45 59.6 V G96
2018-11-16 07:32:10 C 03 53 30.92 -22 45 41.4 V G96
2018-11-16 07:44:31 C 03 53 31.92 -22 45 10.3 V G96
2018-11-16 07:51:56 C 03 53 32.53 -22 44 51.6 V G96
2018-11-16 08:24:18 C 03 53 34.73 -22 43 30.7 V H01
2018-11-16 08:33:58 C 03 53 35.55 -22 43 05.6 V H01
2018-11-16 08:45:09 C 03 53 36.50 -22 42 36.6 V H01
2018-11-16 08:55:44 C 03 53 37.41 -22 42 09.0 V H01
2018-11-16 09:04:08 C 03 53 38.57 -22 41 45.9 V I52
2018-11-16 09:07:38 C 03 53 38.84 -22 41 36.9 V I52
2018-11-16 09:11:08 C 03 53 39.12 -22 41 27.5 V I52
2018-11-16 09:11:54 C 03 53 39.20 -22 41 26.0 V I52
2018-11-16 09:50:16 C 03 53 42.60 -22 39 43.4 V I52
2018-11-16 09:51:02 C 03 53 42.65 -22 39 41.8 V I52
2018-11-16 09:54:53 C 03 53 43.03 -22 39 31.2 V I52
2018-11-16 09:58:45 C 03 53 43.32 -22 39 21.0 V I52
2018-11-16 10:26:13 C 03 53 45.60 -22 38 07.1 V H01
2018-11-16 10:36:10 C 03 53 46.56 -22 37 39.9 V H01
2018-11-16 10:48:37 C 03 53 47.77 -22 37 05.6 V H01
2018-11-16 10:59:21 C 03 53 48.83 -22 36 36.1 V H01
2018-11-18 01:52:49 C 03 59 49.02 -20 25 08.4 U X31
2018-11-18 02:00:35 C 03 59 50.15 -20 24 36.9 U X31
2018-11-18 02:06:33 C 03 59 50.99 -20 24 12.4 U X31
2018-11-18 12:24:51 C 04 01 50.31 -19 37 31.5 q E23
2018-11-18 12:42:51 C 04 01 53.24 -19 36 05.3 q E23
2018-11-18 13:20:20 C 04 01 59.36 -19 33 04.9 q E23
2018-11-19 12:11:43 C 04 07 24.69 -17 22 32.0 V T05
2018-11-19 12:15:02 C 04 07 25.47 -17 22 08.5 V T05
2018-11-19 12:29:45 C 04 07 28.80 -17 20 25.2 V T05
2018-11-19 12:40:20 C 04 07 31.25 -17 19 10.3 V T05
2018-11-20 14:07:10 C 04 16 36.074 -13 37 14.27 V 345
2018-11-20 14:22:10 C 04 16 41.539 -13 34 31.02 V 345
2018-11-21 04:10:48 C 04 23 27.13 -10 39 09.5 u H21
2018-11-21 04:14:19 C 04 23 28.86 -10 38 18.2 u H21
2018-11-21 04:17:51 C 04 23 30.60 -10 37 26.9 u H21
2018-11-21 04:21:23 C 04 23 32.33 -10 36 35.3 u H21
2018-11-21 04:24:54 C 04 23 34.06 -10 35 43.7 u H21
2018-11-21 05:01:52 C 04 23 52.27 -10 26 39.3 u H21
2018-11-21 05:05:57 C 04 23 54.28 -10 25 38.7 u H21
2018-11-21 05:09:50 C 04 23 56.21 -10 24 40.8 u H21
2018-11-21 07:01:15 C 04 24 52.03 -09 56 21.8 u H21
2018-11-21 07:03:41 C 04 24 53.27 -09 55 43.9 u H21
2018-11-21 07:04:54 C 04 24 53.88 -09 55 24.7 u H21
2018-11-21 11:48:50 C 04 27 46.16 -08 35 56.1 V T08
2018-11-21 12:02:56 C 04 27 53.96 -08 31 49.4 V T08
2018-11-21 12:17:03 C 04 28 01.86 -08 27 40.8 V T08
2018-11-21 12:31:01 C 04 28 09.78 -08 23 34.0 V T08
2018-11-21 12:31:30 C 04 28 10.33 -08 23 30.8 V T04
2018-11-21 12:34:53 C 04 28 12.27 -08 22 30.7 V T04
2018-11-21 12:38:14 C 04 28 14.18 -08 21 31.2 V T04
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2018-11-24 14:50:00 -121516.065 2 Hz 8560 -14 -14
2018-11-24 15:10:00 -128875.205 1.5 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)