377097 (2002 WQ4)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5561067250 ± 2.00e+00
Semi-major axis (a)1.9565299014 AU ± 3.00e+00
Inclination (i)3.93632407° ± 4.00e+00
Long. of Asc. Node (Ω)266.86411712° ± 5.00e+00
Arg. of Perihelion (ω)244.66119266° ± 6.00e+00
Mean Anomaly (M)104.91451857° ± 1.33e-06
Mean Motion (n)0.3601492725°/day ± 8.28e-01
Perihelion dist (q)0.86849047 AU ± 4.13e+00
Aphelion dist (Q)3.04456934 AU ± 6.09e+00
Orbital Period2.73671602 yr ± 6.29e+00
NGA Modelr2
A2-2.50318806e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.71
G (slope)0.15
Alternative Designations

1950 XB1

Orbit Solution
SourceIAA
Solution Date2026-04-28
RMS Residual0.339″
Uncertainty0
Orbit TypeApollo
MOID0.019197 AU
Observations Used388
Oppositions48
Arc Total1950-2025
First Observation Used1950-12-11
Last Observation Used2025-01-03
Observations (405)
Date Type RA Dec Mag Band Observatory
2025-01-03 07:50:08 C 13 26 47.081 -24 05 09.56 V W68
2025-01-03 07:55:28 C 13 26 50.429 -24 05 29.51 V W68
2025-01-03 08:12:19 C 13 27 00.722 -24 06 32.40 V W68
2025-01-03 08:20:23 C 13 27 05.772 -24 07 02.46 V W68
2025-01-03 08:40:01 C 13 27 17.738 -24 08 14.96 V W68
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2024-12-27 14:00:00 -65783.1 0.2 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)