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
2017-01-05 01:10:18 C 00 59 45.35 +24 34 09.8 q H45
2017-01-05 01:12:27 C 00 59 45.19 +24 34 03.0 q H45
2017-01-05 01:14:13 C 00 59 44.99 +24 33 56.7 q H45
2017-01-05 01:16:01 C 00 59 44.89 +24 33 52.1 q H45
2017-01-05 01:17:44 C 00 59 44.72 +24 33 46.3 q H45
2017-01-06 16:33:53 S 00 57 10.128 +22 37 32.77 L C51
2017-01-09 03:28:49 C 00 54 00.95 +20 04 42.2 o 691
2017-01-09 03:39:55 C 00 54 00.32 +20 04 16.3 o 691
2017-01-09 03:51:22 C 00 53 59.65 +20 03 47.8 o 691
2021-11-22 14:48:40 C 11 41 27.746 +41 19 31.06 U F52
2021-11-22 14:59:40 C 11 41 26.587 +41 20 21.14 U F52
2021-11-22 15:10:38 C 11 41 25.399 +41 21 11.41 U F52
2021-11-22 15:21:38 C 11 41 24.216 +41 22 01.49 U F52
2021-11-26 13:35:39 C 11 30 18.13 +49 23 53.4 V T05
2021-11-26 13:43:37 C 11 30 16.77 +49 24 41.4 V T05
2021-11-26 13:49:35 C 11 30 15.70 +49 25 18.0 V T05
2021-11-26 14:04:14 C 11 30 13.02 +49 26 47.8 V T05
2021-11-29 09:26:17 C 11 15 56.11 +56 44 42.5 V 703
2021-11-29 09:35:54 C 11 15 53.34 +56 45 53.6 V 703
2021-11-29 09:45:33 C 11 15 50.40 +56 47 06.0 V 703
2021-11-29 09:55:10 C 11 15 47.45 +56 48 16.9 V 703
2021-12-08 16:04:59 C 04 40 27.635 +78 35 40.13 V O85
2021-12-08 16:07:52 C 04 40 17.460 +78 35 25.48 V O85
2021-12-08 16:10:45 C 04 40 07.131 +78 35 10.98 V O85
2021-12-08 16:26:36 C 04 39 10.940 +78 33 52.79 V O85
2021-12-08 16:29:30 C 04 39 00.628 +78 33 38.76 V O85
2021-12-08 16:35:16 C 04 38 40.508 +78 33 09.28 V O85
2021-12-08 16:38:10 C 04 38 30.126 +78 32 54.71 V O85
2021-12-08 16:41:03 C 04 38 19.876 +78 32 40.96 V O85
2021-12-10 08:34:16 C 03 00 30.76 +73 50 04.5 V T08
2021-12-10 08:38:57 C 03 00 22.44 +73 49 24.6 V T08
2021-12-10 08:46:55 C 03 00 08.29 +73 48 16.6 V T08
2021-12-10 09:01:34 C 02 59 42.54 +73 46 10.7 V T08
2021-12-14 08:28:46 C 01 39 49.00 +59 28 23.2 V T08
2021-12-14 08:34:45 C 01 39 46.37 +59 27 30.4 V T08
2021-12-14 08:58:39 C 01 39 35.87 +59 24 00.1 V T08
2021-12-16 08:38:15 C 01 25 01.43 +52 55 04.3 V T05
2021-12-16 08:42:13 C 01 25 00.35 +52 54 33.2 V T05
2021-12-16 08:50:09 C 01 24 58.26 +52 53 31.0 V T05
2021-12-16 09:04:03 C 01 24 54.58 +52 51 41.0 V T05
2021-12-22 17:41:09 C 01 05 41.52 +37 17 19.8 V 204
2021-12-22 17:50:27 C 01 05 40.77 +37 16 36.1 V 204
2021-12-22 17:59:43 C 01 05 40.02 +37 15 52.4 V 204
2021-12-22 18:09:00 C 01 05 39.27 +37 15 08.5 V 204
2021-12-22 18:18:19 C 01 05 38.52 +37 14 24.6 V 204
2021-12-23 03:11:19 C 01 05 05.46 +36 33 19.6 V G96
2021-12-23 03:19:32 C 01 05 04.82 +36 32 41.6 V G96
2021-12-23 03:27:47 C 01 05 04.16 +36 32 03.3 V G96
2021-12-23 03:35:58 C 01 05 03.53 +36 31 25.7 V G96
2021-12-24 01:14:48 C 01 03 55.52 +34 55 38.6 V W46
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)