285263 (1998 QE2)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5727151351 ± 2.12e-09
Semi-major axis (a)2.4206926771 AU ± 5.13e-09
Inclination (i)12.87778231° ± 6.59e-07
Long. of Asc. Node (Ω)250.07086861° ± 5.35e-07
Arg. of Perihelion (ω)345.66936702° ± 1.74e-06
Mean Anomaly (M)113.98169612° ± 3.79e-06
Mean Motion (n)0.2616994389°/day ± 8.32e-10
Perihelion dist (q)1.03432534 AU ± 5.59e-09
Aphelion dist (Q)3.80706001 AU ± 9.57e-09
Orbital Period3.76625295 yr ± 1.20e-08
Physical Parameters
H (abs. magnitude)17.28
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.291″
Uncertainty0
Orbit TypeAmor
MOID0.029660 AU
Observations Used1844
Radar Obs Used4
Oppositions11
Arc Total1998-2025
First Observation Used1998-08-19
Last Observation Used2025-11-23
Observations (1924)
Date Type RA Dec Mag Band Observatory
2013-06-03 21:49:52 C 16 11 21.08 -05 58 28.1 q C23
2013-06-03 22:50:20 C 16 12 17.54 -05 47 24.3 q C23
2013-06-03 22:51:59 C 16 12 19.05 -05 47 06.4 q C23
2013-06-03 22:53:17 C 16 12 20.27 -05 46 51.9 q C23
2013-06-03 23:01:02 C 16 12 28.25 -05 45 07.9 g G27
2013-06-03 23:10:02 C 16 12 36.55 -05 43 29.2 g G27
2013-06-03 23:20:02 C 16 12 45.75 -05 41 39.9 g G27
2013-06-03 23:29:43 C 16 12 54.06 -05 40 13.4 q C23
2013-06-03 23:30:02 C 16 12 54.97 -05 39 50.6 g G27
2013-06-03 23:31:21 C 16 12 55.59 -05 39 55.4 q C23
2013-06-03 23:32:40 C 16 12 56.81 -05 39 41.2 q C23
2013-06-03 23:40:02 C 16 13 04.12 -05 38 01.4 g G27
2013-06-03 23:50:02 C 16 13 13.34 -05 36 12.2 g G27
2013-06-03 23:59:02 C 16 13 21.59 -05 34 33.8 g G27
2013-06-04 00:13:43 C 16 13 34.41 -05 32 11.7 u 510
2013-06-04 00:15:52 C 16 13 36.39 -05 31 48.3 u 510
2013-06-04 00:18:01 C 16 13 38.37 -05 31 25.0 u 510
2013-06-04 00:20:10 C 16 13 40.37 -05 31 01.5 u 510
2013-06-04 00:22:19 C 16 13 42.35 -05 30 38.0 u 510
2013-06-04 00:24:28 C 16 13 44.34 -05 30 14.6 u 510
2013-06-04 00:26:37 C 16 13 46.34 -05 29 51.0 u 510
2013-06-04 00:28:46 C 16 13 48.31 -05 29 27.6 u 510
2013-06-04 00:30:55 C 16 13 50.30 -05 29 04.3 u 510
2013-06-04 00:33:04 C 16 13 52.28 -05 28 41.0 u 510
2013-06-04 00:35:13 C 16 13 54.25 -05 28 17.5 u 510
2013-06-04 00:37:22 C 16 13 56.24 -05 27 54.1 u 510
2013-06-04 00:39:31 C 16 13 58.24 -05 27 30.8 u 510
2013-06-04 00:41:40 C 16 14 00.22 -05 27 07.4 u 510
2013-06-04 00:43:49 C 16 14 02.23 -05 26 43.9 u 510
2013-06-04 00:45:58 C 16 14 04.21 -05 26 20.6 u 510
2013-06-04 00:48:07 C 16 14 06.20 -05 25 56.9 u 510
2013-06-04 00:50:16 C 16 14 08.19 -05 25 33.6 u 510
2013-06-04 00:52:25 C 16 14 10.17 -05 25 10.3 u 510
2013-06-04 00:54:34 C 16 14 12.13 -05 24 46.8 u 510
2013-06-04 00:56:43 C 16 14 14.14 -05 24 23.6 u 510
2013-06-04 00:58:52 C 16 14 16.12 -05 24 00.0 u 510
2013-06-04 01:03:10 C 16 14 20.08 -05 23 13.6 u 510
2013-06-04 01:05:19 C 16 14 22.07 -05 22 49.9 u 510
2013-06-04 03:12:16 C 16 16 36.11 -04 59 12.2 o G48
2013-06-04 03:12:31 C 16 16 36.33 -04 59 09.4 o G48
2013-06-04 03:12:46 C 16 16 36.56 -04 59 06.6 o G48
2013-06-04 03:13:01 C 16 16 36.80 -04 59 04.4 o G48
2013-06-04 03:13:16 C 16 16 37.02 -04 59 01.2 o G48
2013-06-04 03:13:32 C 16 16 37.26 -04 58 58.3 o G48
2013-06-04 03:14:17 C 16 16 37.93 -04 58 50.6 o G48
2013-06-04 03:14:32 C 16 16 38.17 -04 58 47.7 o G48
2013-06-04 05:49:39 C 16 18 53.82 -04 31 29.1 q H45
2013-06-04 05:50:27 C 16 18 54.54 -04 31 20.5 q H45
2013-06-04 05:51:15 C 16 18 55.25 -04 31 12.4 q H45
2013-06-04 05:52:05 C 16 18 56.01 -04 31 03.0 q H45
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-06-07 05:00:00 55277706.99 1 us 2380 -1 -1
2013-06-11 06:16:00 75259618.58 1 us 2380 -1 -1
2013-06-13 05:59:00 86115379.37 1 us 2380 -1 -1
2013-06-27 06:00:00 169939823.4 2 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)