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
2018-11-21 12:41:35 C 04 28 16.08 -08 20 31.3 V T04
2018-11-21 12:44:57 C 04 28 17.99 -08 19 31.7 V T04
2018-11-21 12:50:29 C 04 28 21.20 -08 17 52.3 V T04
2018-11-21 22:27:36 C 04 35 44.69 -05 07 45.7 V J95
2018-11-21 22:35:39 C 04 35 50.83 -05 04 45.2 V J95
2018-11-21 22:43:37 C 04 35 56.91 -05 01 45.7 V J95
2018-11-21 23:07:24 C 04 36 15.11 -04 52 46.3 V J95
2018-11-21 23:15:41 C 04 36 21.46 -04 49 37.3 V J95
2018-11-21 23:56:54 C 04 36 53.04 -04 33 47.1 V Z80
2018-11-22 00:03:31 C 04 36 58.18 -04 31 11.3 V Z80
2018-11-22 00:10:23 C 04 37 03.53 -04 28 31.6 V Z80
2018-11-22 23:16:07 C 05 04 13.16 +08 12 46.1 V L09
2018-11-22 23:20:23 C 05 04 19.49 +08 15 54.3 V L09
2018-11-22 23:24:39 C 05 04 25.85 +08 19 03.3 V L09
2018-11-22 23:28:55 C 05 04 32.20 +08 22 11.2 V L09
2018-11-22 23:33:10 C 05 04 38.56 +08 25 20.3 V L09
2018-11-25 11:16:39 C 10 39 55.37 +61 44 05.5 U I41
2018-11-25 11:17:08 C 10 39 59.54 +61 44 06.6 U I41
2018-11-25 12:41:11 C 10 51 58.93 +61 45 49.0 U I41
2018-11-25 12:41:41 C 10 52 02.99 +61 45 48.7 U I41
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)