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
2011-12-28 17:21:57 C 02 25 02.42 +58 19 13.1 u A78
2011-12-28 20:20:24 C 02 21 37.89 +57 51 19.7 u 160
2011-12-28 20:22:38 C 02 21 35.36 +57 50 58.1 u 160
2011-12-28 20:25:00 C 02 21 32.70 +57 50 35.6 u 160
2011-12-28 20:27:35 C 02 21 29.79 +57 50 10.7 u 160
2011-12-30 12:51:27 C 01 45 51.29 +51 20 43.2 u 379
2011-12-30 12:59:28 C 01 45 45.24 +51 19 24.1 u 379
2011-12-30 13:09:12 C 01 45 38.05 +51 17 47.9 u 379
2011-12-30 13:16:54 C 01 45 32.34 +51 16 31.7 u 379
2011-12-31 10:47:02 C 01 31 50.15 +47 51 59.3 u 379
2011-12-31 10:58:17 C 01 31 43.18 +47 50 12.4 u 379
2011-12-31 11:17:00 C 01 31 31.67 +47 47 15.3 u 379
2011-12-31 11:19:12 C 01 31 30.33 +47 46 54.0 u 379
2011-12-31 11:26:18 C 01 31 25.95 +47 45 46.8 u 379
2011-12-31 11:38:05 C 01 31 18.75 +47 43 54.0 u 379
2012-01-01 18:41:36 C 01 15 47.67 +43 01 46.2 a 233
2012-01-01 18:44:43 C 01 15 46.29 +43 01 20.3 a 233
2012-01-01 18:47:05 C 01 15 45.12 +43 00 58.0 a 233
2012-01-01 18:49:05 C 01 15 44.47 +43 00 45.0 a 233
2012-01-06 19:19:16 C 00 41 09.71 +28 23 29.3 t 204
2012-01-06 19:31:35 C 00 41 07.20 +28 22 16.1 t 204
2012-01-09 03:13:45 C 00 32 08.80 +23 26 42.6 r 703
2012-01-09 03:14:32 C 00 32 08.59 +23 26 40.9 r 703
2012-01-09 03:15:22 C 00 32 08.55 +23 26 36.2 r 703
2012-01-09 03:16:12 C 00 32 08.37 +23 26 31.8 r 703
2012-01-11 18:04:45 C 00 24 34.31 +18 55 04.0 c A24
2012-01-11 18:06:54 C 00 24 34.00 +18 54 55.8 c A24
2012-01-11 18:25:45 C 00 24 31.77 +18 53 42.6 c A24
2012-01-11 19:14:05 C 00 24 26.09 +18 50 33.2 c A24
2012-01-11 19:16:14 C 00 24 25.86 +18 50 24.9 c A24
2016-11-12 10:56:58 C 11 04 46.85 +27 33 41.7 o 695
2016-11-12 11:01:05 C 11 04 46.68 +27 33 47.5 o 695
2016-11-12 11:05:11 C 11 04 46.50 +27 33 53.2 o 695
2016-11-12 12:55:33 C 11 04 41.36 +27 36 30.7 o 291
2016-11-12 12:58:33 C 11 04 41.23 +27 36 34.9 o 291
2016-11-12 13:01:31 C 11 04 41.12 +27 36 38.8 o 291
2016-11-16 10:56:04 C 11 00 53.82 +29 55 58.3 U V37
2016-11-16 10:58:11 C 11 00 53.71 +29 56 01.7 U V37
2016-11-16 11:00:16 C 11 00 53.61 +29 56 05.4 U V37
2016-11-16 11:02:21 C 11 00 53.52 +29 56 08.7 U V37
2016-11-16 11:04:27 C 11 00 53.40 +29 56 12.4 U V37
2016-11-16 11:06:32 C 11 00 53.27 +29 56 15.8 U V37
2016-11-16 11:08:37 C 11 00 53.18 +29 56 19.2 U V37
2016-11-16 11:10:43 C 11 00 53.07 +29 56 22.7 U V37
2016-11-16 11:12:48 C 11 00 52.97 +29 56 26.1 U V37
2016-11-16 11:14:56 C 11 00 52.84 +29 56 29.9 U V37
2016-11-17 10:51:48 C 10 59 50.18 +30 35 16.2 U V37
2016-11-17 10:53:50 C 10 59 50.08 +30 35 19.8 U V37
2016-11-17 10:55:52 C 10 59 49.97 +30 35 23.5 U V37
2016-11-17 10:57:54 C 10 59 49.86 +30 35 26.9 U V37
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)