204131 (2003 YL)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6324834176 ± 2.00e+00
Semi-major axis (a)1.1465001714 AU ± 3.00e+00
Inclination (i)5.65470944° ± 4.00e+00
Long. of Asc. Node (Ω)291.91664816° ± 5.00e+00
Arg. of Perihelion (ω)29.46037140° ± 6.00e+00
Mean Anomaly (M)8.47248026° ± 7.78e-06
Mean Motion (n)0.8028808329°/day ± 3.15e+00
Perihelion dist (q)0.42135782 AU ± 2.54e+00
Aphelion dist (Q)1.87164252 AU ± 5.41e+00
Orbital Period1.22761217 yr ± 4.82e+00
NGA Modelr2
A2-3.60155964e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.94
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-29
RMS Residual0.300″
Uncertainty0
Orbit TypeApollo
MOID0.051368 AU
Observations Used361
Oppositions4
Arc Total2002-2026
First Observation Used2002-03-06
Last Observation Used2026-01-20
Observations (375)
Date Type RA Dec Mag Band Observatory
2025-01-19 09:53:05 C 08 46 56.032 +15 07 54.34 V G96
2025-01-19 10:00:30 C 08 46 55.124 +15 07 56.71 V G96
2025-01-19 12:12:08 C 08 46 39.288 +15 08 41.84 X F51
2025-01-19 12:47:44 C 08 46 34.843 +15 08 53.39 X F51
2025-01-19 13:05:32 C 08 46 32.627 +15 08 58.88 X F51
2025-01-22 08:45:14 C 08 38 20.836 +15 30 36.26 X F51
2025-01-22 09:04:14 C 08 38 18.475 +15 30 42.44 X F51
2025-01-22 09:23:24 C 08 38 16.092 +15 30 48.52 X F51
2025-01-22 09:42:41 C 08 38 13.695 +15 30 54.74 X F51
2025-01-24 07:53:49 C 08 32 38.958 +15 45 10.76 V G96
2025-01-24 08:08:37 C 08 32 37.172 +15 45 14.40 V G96
2025-01-24 08:16:01 C 08 32 36.236 +15 45 17.21 V G96
2025-01-27 06:34:03 C 08 24 15.167 +16 06 05.08 V G96
2025-01-27 06:40:54 C 08 24 14.378 +16 06 06.98 V G96
2025-01-27 06:47:45 C 08 24 13.504 +16 06 09.65 V G96
2026-01-14 06:11:02 C 01 38 38.761 +15 53 05.77 X F52
2026-01-14 06:30:04 C 01 38 44.098 +15 53 24.76 X F52
2026-01-14 06:49:06 C 01 38 49.440 +15 53 43.81 X F52
2026-01-15 11:48:04 C 01 46 53.69 +16 21 34.8 V D29
2026-01-15 12:08:26 C 01 46 59.19 +16 21 55.3 V D29
2026-01-15 12:28:48 C 01 47 04.57 +16 22 12.5 V D29
2026-01-20 07:03:34 C 02 15 38.720 +17 51 59.22 X F52
2026-01-20 07:20:23 C 02 15 42.523 +17 52 10.23 X F52
2026-01-20 07:37:17 C 02 15 46.316 +17 52 21.13 X F52
2026-01-20 07:54:12 C 02 15 50.127 +17 52 32.07 X F52
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2014-12-05 17:44:00 307241.2161 0.1 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)