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
2016-12-15 04:46:50 C 05 51 53.48 +69 23 40.9 u H21
2016-12-15 04:48:47 C 05 51 49.38 +69 23 39.7 u H21
2016-12-15 04:50:45 C 05 51 45.29 +69 23 38.7 u H21
2016-12-15 04:52:42 C 05 51 41.23 +69 23 37.8 u H21
2016-12-15 04:54:40 C 05 51 37.21 +69 23 36.5 u H21
2016-12-15 04:56:37 C 05 51 33.18 +69 23 35.6 u H21
2016-12-15 04:58:34 C 05 51 29.07 +69 23 34.6 u H21
2016-12-15 05:00:31 C 05 51 25.02 +69 23 33.3 u H21
2016-12-15 05:02:28 C 05 51 20.98 +69 23 32.2 u H21
2016-12-15 05:06:22 C 05 51 12.93 +69 23 30.1 u H21
2016-12-15 05:08:19 C 05 51 08.89 +69 23 28.9 u H21
2016-12-15 05:10:16 C 05 51 04.82 +69 23 27.5 u H21
2016-12-15 05:12:13 C 05 51 00.82 +69 23 26.4 u H21
2016-12-15 05:14:10 C 05 50 56.78 +69 23 25.3 u H21
2016-12-15 05:16:07 C 05 50 52.70 +69 23 24.0 u H21
2016-12-15 05:18:04 C 05 50 48.63 +69 23 22.8 u H21
2016-12-15 05:20:01 C 05 50 44.58 +69 23 21.6 u H21
2016-12-15 05:22:22 C 05 50 39.71 +69 23 19.9 u H21
2016-12-16 00:38:51 C 05 12 39.93 +68 52 32.9 q W25
2016-12-16 01:33:04 C 05 10 53.10 +68 50 37.2 q W25
2016-12-20 03:14:41 C 02 50 48.52 +59 51 32.6 q H45
2016-12-20 03:15:52 C 02 50 47.36 +59 51 24.1 q H45
2016-12-20 03:17:00 C 02 50 46.25 +59 51 15.4 q H45
2016-12-20 03:18:08 C 02 50 45.14 +59 51 06.9 q H45
2016-12-20 03:18:56 C 02 50 44.42 +59 51 01.4 q H45
2016-12-20 03:20:26 C 02 50 42.91 +59 50 50.1 q H45
2016-12-20 03:21:12 C 02 50 42.09 +59 50 44.2 q H45
2016-12-20 03:22:08 C 02 50 41.23 +59 50 37.5 q H45
2016-12-21 20:57:08 C 02 18 39.19 +54 38 27.1 o 107
2016-12-21 21:00:58 C 02 18 36.64 +54 37 57.3 o 107
2016-12-21 21:04:50 C 02 18 34.05 +54 37 28.4 o 107
2016-12-21 21:08:40 C 02 18 31.46 +54 36 58.9 o 107
2016-12-22 21:45:08 C 02 04 26.72 +51 32 53.0 U 204
2016-12-22 21:46:28 C 02 04 26.01 +51 32 43.0 U 204
2016-12-22 21:47:47 C 02 04 25.30 +51 32 33.1 U 204
2016-12-22 21:53:06 C 02 04 22.44 +51 31 53.2 U 204
2016-12-22 21:54:45 C 02 04 21.54 +51 31 40.7 U 204
2016-12-23 01:23:15 C 02 02 40.88 +51 06 27.1 q W25
2016-12-23 01:33:33 C 02 02 35.39 +51 05 11.5 q W25
2016-12-23 20:07:53 C 01 53 59.00 +48 50 21.1 q C77
2016-12-23 20:10:08 C 01 53 57.97 +48 50 04.9 q C77
2016-12-23 20:16:25 C 01 53 55.10 +48 49 19.6 q C77
2016-12-23 21:03:31 C 01 53 33.65 +48 43 38.8 q K32
2016-12-23 21:09:43 C 01 53 31.06 +48 42 53.0 q K32
2016-12-23 21:15:54 C 01 53 28.03 +48 42 09.0 q K32
2016-12-24 06:11:52 C 01 49 51.540 +47 39 46.87 U T12
2016-12-24 06:12:42 C 01 49 51.186 +47 39 41.01 U T12
2016-12-24 19:51:59 C 01 44 42.28 +46 04 38.3 u 107
2016-12-24 19:57:27 C 01 44 40.22 +46 03 59.8 u 107
2016-12-24 20:02:56 C 01 44 38.12 +46 03 22.6 u 107
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)