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
2016-12-28 01:45:59 C 01 23 28.67 +38 02 39.5 q H45
2016-12-28 01:47:05 C 01 23 28.48 +38 02 33.9 q H45
2016-12-28 01:48:12 C 01 23 28.18 +38 02 26.9 q H45
2016-12-28 01:49:16 C 01 23 27.96 +38 02 21.0 q H45
2016-12-28 01:50:38 C 01 23 27.65 +38 02 13.9 q H45
2016-12-28 01:52:18 C 01 23 27.26 +38 02 04.5 q H45
2016-12-28 02:47:27 C 01 23 14.02 +37 56 47.3 q W25
2016-12-28 02:57:20 C 01 23 11.82 +37 55 51.6 q W25
2016-12-28 19:43:15 C 01 19 57.49 +36 25 14.4 q 160
2016-12-28 19:46:23 C 01 19 56.86 +36 24 58.1 q 160
2016-12-28 19:49:17 C 01 19 56.25 +36 24 42.9 q 160
2016-12-29 17:37:18 C 01 16 13.28 +34 33 28.3 q 246
2016-12-29 17:37:49 C 01 16 13.15 +34 33 26.2 q 246
2016-12-29 17:38:05 C 01 16 13.15 +34 33 24.5 q 246
2016-12-29 17:38:43 C 01 16 13.03 +34 33 21.3 q 246
2016-12-29 17:39:43 C 01 16 12.81 +34 33 15.8 q 246
2016-12-29 17:42:21 C 01 16 12.41 +34 33 04.0 q 246
2016-12-30 03:03:54 C 01 14 41.70 +33 47 44.9 q H45
2016-12-30 03:04:53 C 01 14 41.56 +33 47 39.3 q H45
2016-12-30 03:06:04 C 01 14 41.33 +33 47 34.1 q H45
2016-12-30 03:07:33 C 01 14 41.09 +33 47 26.7 q H45
2016-12-30 03:08:44 C 01 14 40.87 +33 47 20.6 q H45
2016-12-30 03:10:04 C 01 14 40.64 +33 47 14.2 q H45
2016-12-30 03:11:22 C 01 14 40.43 +33 47 07.5 q H45
2016-12-30 03:12:37 C 01 14 40.21 +33 47 01.6 q H45
2016-12-30 19:01:43 C 01 12 23.96 +32 32 46.9 q 246
2016-12-30 19:02:20 C 01 12 23.84 +32 32 44.0 q 246
2016-12-30 19:03:10 C 01 12 23.71 +32 32 39.8 q 246
2016-12-31 01:37:12 C 01 11 30.48 +32 03 16.6 q H45
2016-12-31 01:38:15 C 01 11 30.34 +32 03 11.5 q H45
2016-12-31 01:39:05 C 01 11 30.20 +32 03 08.6 q H45
2016-12-31 01:39:57 C 01 11 30.08 +32 03 04.3 q H45
2016-12-31 01:47:28 C 01 11 28.93 +32 02 31.3 q H45
2016-12-31 01:48:22 C 01 11 28.82 +32 02 26.8 q H45
2016-12-31 20:50:13 C 01 09 02.96 +30 39 26.1 q 160
2016-12-31 20:53:13 C 01 09 02.58 +30 39 13.2 q 160
2016-12-31 20:56:14 C 01 09 02.20 +30 39 00.6 q 160
2017-01-01 18:20:05 C 01 06 39.41 +29 11 36.3 q 246
2017-01-01 18:21:00 C 01 06 39.26 +29 11 32.7 q 246
2017-01-01 18:21:45 C 01 06 39.17 +29 11 29.7 q 246
2017-01-01 18:22:00 C 01 06 39.19 +29 11 28.8 q 246
2017-01-01 18:22:16 C 01 06 39.12 +29 11 28.1 q 246
2017-01-01 18:22:43 C 01 06 39.06 +29 11 26.8 q 246
2017-01-01 18:23:11 C 01 06 39.02 +29 11 25.0 q 246
2017-01-01 18:23:24 C 01 06 39.03 +29 11 24.0 q 246
2017-01-01 18:41:24 S 01 06 37.291 +29 10 34.25 L C51
2017-01-01 21:50:05 S 01 06 17.501 +28 58 11.10 L C51
2017-01-02 00:58:35 S 01 05 57.763 +28 45 57.35 L C51
2017-01-02 05:41:31 S 01 05 29.162 +28 27 49.39 L C51
2017-01-05 01:08:25 C 00 59 45.53 +24 34 15.6 q H45
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)