480883 (2001 YE4)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5404290509 ± 2.00e+00
Semi-major axis (a)0.6768702883 AU ± 3.00e+00
Inclination (i)4.85305970° ± 4.00e+00
Long. of Asc. Node (Ω)305.31872874° ± 5.00e+00
Arg. of Perihelion (ω)318.99423011° ± 6.00e+00
Mean Anomaly (M)193.15683328° ± 7.94e-06
Mean Motion (n)1.7699218872°/day ± 1.18e+01
Perihelion dist (q)0.31106992 AU ± 1.93e+00
Aphelion dist (Q)1.04267066 AU ± 4.82e+00
Orbital Period0.55687558 yr ± 3.70e+00
NGA Modelr2
A2-6.98415303e-06 AU/d²
Physical Parameters
H (abs. magnitude)20.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-28
RMS Residual0.318″
Uncertainty0
Orbit TypeAten
MOID0.031209 AU
Observations Used400
Oppositions19
Arc Total2001-2025
First Observation Used2001-12-21
Last Observation Used2025-12-17
Observations (440)
Date Type RA Dec Mag Band Observatory
2002-01-04 11:03:54 C 16 34 52.68 +38 59 09.7 c 649
2002-01-04 11:05:21 C 16 34 56.29 +38 58 58.6 c 649
2002-01-04 11:06:50 C 16 34 59.73 +38 58 47.7 c 649
2002-01-04 12:37:27 C 16 38 43.48 +38 46 43.3 o 644
2002-01-04 13:30:57 C 16 40 53.24 +38 39 39.5 o 644
2002-01-05 04:06:55 C 17 16 07.84 +36 11 26.1 104
2002-01-05 04:11:27 C 17 16 18.43 +36 10 36.3 104
2002-01-05 04:12:20 C 17 16 20.96 +36 10 24.9 104
2002-01-05 04:13:07 C 17 16 22.43 +36 10 17.5 104
2002-01-05 04:13:50 C 17 16 24.18 +36 10 09.0 104
2002-01-05 04:15:40 C 17 16 28.49 +36 09 48.8 104
2002-01-05 04:16:33 C 17 16 30.45 +36 09 39.5 104
2002-01-05 04:19:00 C 17 16 36.32 +36 09 11.4 104
2002-01-05 04:20:40 C 17 16 40.36 +36 08 53.4 104
2002-01-05 04:21:31 C 17 16 42.22 +36 08 44.6 104
2011-11-21 04:44:16 C 10 35 47.26 +28 21 40.0 v 586
2011-11-21 04:46:32 C 10 35 47.23 +28 21 42.1 v 586
2011-11-21 04:48:37 C 10 35 47.21 +28 21 44.0 v 586
2011-11-21 04:50:40 C 10 35 47.16 +28 21 46.5 v 586
2011-11-21 04:52:45 C 10 35 47.09 +28 21 47.8 v 586
2011-11-21 04:54:48 C 10 35 47.10 +28 21 49.6 v 586
2011-11-22 11:00:29 C 10 35 31.14 +28 51 09.3 o 291
2011-11-22 11:05:11 C 10 35 31.08 +28 51 14.0 o 291
2011-11-22 11:09:53 C 10 35 30.96 +28 51 19.0 o 291
2011-11-23 10:50:07 C 10 35 15.44 +29 15 42.9 o 695
2011-11-23 10:53:54 C 10 35 15.36 +29 15 47.1 o 695
2011-11-23 10:55:47 C 10 35 15.32 +29 15 49.2 o 695
2011-12-14 18:54:44 C 09 50 23.88 +49 41 32.8 o 300
2011-12-14 18:55:23 C 09 50 23.68 +49 41 36.5 o 300
2011-12-14 18:57:23 C 09 50 23.02 +49 41 45.7 o 300
2011-12-14 18:58:03 C 09 50 22.72 +49 41 49.1 o 300
2011-12-14 18:58:43 C 09 50 22.57 +49 41 52.7 o 300
2011-12-14 18:59:23 C 09 50 22.30 +49 41 56.1 o 300
2011-12-15 23:22:51 C 09 40 20.71 +52 07 30.0 v C32
2011-12-15 23:23:34 C 09 40 20.44 +52 07 33.8 v C32
2011-12-15 23:25:40 C 09 40 19.54 +52 07 45.0 v C32
2011-12-15 23:26:21 C 09 40 19.25 +52 07 49.0 v C32
2011-12-18 21:12:56 C 09 01 25.51 +58 55 59.5 u 089
2011-12-18 21:15:52 C 09 01 23.16 +58 56 18.5 u 089
2011-12-18 21:18:47 C 09 01 20.90 +58 56 37.2 u 089
2011-12-18 21:21:42 C 09 01 18.59 +58 56 55.8 u 089
2011-12-18 21:24:37 C 09 01 16.26 +58 57 14.9 u 089
2011-12-18 23:37:08 C 08 59 32.45 +59 10 56.5 t J69
2011-12-18 23:39:31 C 08 59 30.55 +59 11 12.2 t J69
2011-12-18 23:41:52 C 08 59 28.62 +59 11 27.3 t J69
2011-12-18 23:44:13 C 08 59 26.72 +59 11 43.1 t J69
2011-12-18 23:46:34 C 08 59 24.78 +59 11 58.0 t J69
2011-12-19 00:57:22 C 08 58 21.94 +59 19 49.4 u 089
2011-12-19 01:00:19 C 08 58 19.45 +59 20 08.0 u 089
2011-12-19 01:03:15 C 08 58 16.97 +59 20 26.3 u 089
Radar Observations (7)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2002-01-10 16:45:00 -151398.2486 0.5 Hz 2380 -1 -1
2002-01-10 16:58:00 51515139.22 4 us 2380 -1 -1
2012-01-04 22:21:00 87498216.95 4 us 2380 -1 -1
2012-01-04 22:39:00 87547021.7 1 us 2380 -1 -1
2012-01-05 21:30:00 91354683.07 0.2 us 2380 -1 -1
2016-12-28 23:11:00 110231311.88 0.5 us 2380 -1 -1
2016-12-29 23:10:00 114387465.49 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)