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
2013-06-15 22:24:46 C 18 24 35.67 +17 38 05.5 c J19
2013-06-15 22:27:26 C 18 24 36.12 +17 38 09.7 c J19
2013-06-15 22:30:06 C 18 24 36.59 +17 38 13.8 c J19
2013-06-15 22:32:46 C 18 24 37.06 +17 38 18.4 c J19
2013-06-15 22:35:26 C 18 24 37.51 +17 38 22.5 c J19
2013-06-15 22:38:07 C 18 24 37.95 +17 38 26.5 c J19
2013-06-15 22:56:59 C 18 24 40.98 +17 38 54.7 w 213
2013-06-16 00:31:36 C 18 24 56.74 +17 41 07.5 q C23
2013-06-16 00:33:55 C 18 24 57.13 +17 41 11.1 q C23
2013-06-16 00:36:49 C 18 24 57.63 +17 41 15.5 q C23
2013-06-16 01:12:00 C 18 25 03.69 +17 42 20.9 w 213
2013-06-16 01:16:13 C 18 25 04.33 +17 42 14.5 q C23
2013-06-16 01:19:06 C 18 25 04.82 +17 42 18.7 q C23
2013-06-16 01:21:25 C 18 25 05.22 +17 42 22.2 q C23
2013-06-16 03:08:24 C 18 25 23.23 +17 45 10.8 w 213
2013-06-17 01:08:12 C 18 29 17.76 +18 15 41.3 q I89
2013-06-17 01:28:08 C 18 29 20.69 +18 16 06.7 q I89
2013-06-17 01:46:46 C 18 29 23.45 +18 16 30.1 q I89
2013-06-17 20:00:04 C 18 32 22.23 +18 38 13.1 o A92
2013-06-17 20:09:35 C 18 32 23.56 +18 38 23.5 o A92
2013-06-17 20:20:10 C 18 32 25.05 +18 38 36.3 o A92
2013-06-17 20:25:27 C 18 32 25.80 +18 38 42.3 o A92
2013-06-17 20:50:40 C 18 32 29.30 +18 39 12.0 o A92
2013-06-17 21:00:31 C 18 32 30.70 +18 39 22.4 o A92
2013-06-17 21:10:41 C 18 32 32.08 +18 39 34.2 o A92
2013-06-17 21:40:45 C 18 32 36.73 +18 40 00.7 q G34
2013-06-17 21:46:14 C 18 32 37.46 +18 40 06.8 q G34
2013-06-17 21:51:34 C 18 32 38.21 +18 40 13.1 q G34
2013-06-17 21:56:56 C 18 32 38.98 +18 40 18.9 q G34
2013-06-17 23:40:05 n 18 32 54.00 +18 42 11.2 q Z92
2013-06-17 23:40:25 n 18 32 54.02 +18 42 11.6 q Z92
2013-06-17 23:40:40 n 18 32 54.04 +18 42 11.9 q Z92
2013-06-17 23:40:56 n 18 32 54.05 +18 42 12.2 q Z92
2013-06-17 23:41:09 n 18 32 54.07 +18 42 12.4 q Z92
2013-06-18 00:13:00 C 18 32 57.74 +18 43 00.0 i C91
2013-06-18 00:15:00 C 18 32 58.01 +18 43 02.2 i C91
2013-06-18 00:17:00 C 18 32 58.27 +18 43 04.0 i C91
2013-06-18 00:18:59 C 18 32 58.54 +18 43 06.6 i C91
2013-06-18 00:22:59 C 18 32 59.07 +18 43 11.0 i C91
2013-06-18 00:27:00 C 18 32 59.61 +18 43 15.4 i C91
2013-06-18 00:29:59 C 18 33 00.01 +18 43 18.7 i C91
2013-06-18 00:33:00 C 18 33 00.41 +18 43 21.9 i C91
2013-06-18 00:35:00 C 18 33 00.68 +18 43 24.0 i C91
2013-06-18 00:36:59 C 18 33 00.95 +18 43 26.2 i C91
2013-06-18 00:40:00 C 18 33 01.35 +18 43 29.5 i C91
2013-06-18 00:44:00 C 18 33 01.88 +18 43 33.8 i C91
2013-06-18 00:45:59 C 18 33 02.16 +18 43 36.0 i C91
2013-06-18 00:47:59 C 18 33 02.42 +18 43 38.1 i C91
2013-06-18 00:49:59 C 18 33 02.69 +18 43 40.3 i C91
2013-06-18 00:53:00 C 18 33 03.09 +18 43 43.5 i C91
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)