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
2013-05-31 07:39:01 C 14 28 00.59 -23 08 24.0 P E89
2013-05-31 07:39:52 C 14 27 45.02 -23 12 12.1 u H06
2013-05-31 07:40:36 C 14 28 02.71 -23 08 06.6 P E89
2013-05-31 07:42:23 C 14 28 05.06 -23 07 46.6 P E89
2013-05-31 07:45:21 C 14 28 09.04 -23 07 13.5 P E89
2013-05-31 07:48:39 C 14 28 13.47 -23 06 36.7 P E89
2013-05-31 07:48:49 C 14 27 56.97 -23 10 28.8 u H06
2013-05-31 07:49:46 C 14 28 14.91 -23 06 24.2 P E89
2013-05-31 07:51:59 C 14 28 17.86 -23 05 59.2 P E89
2013-05-31 07:58:49 C 14 28 10.39 -23 08 32.4 u H06
2013-05-31 08:11:00 C 14 28 43.24 -23 02 25.7 P E89
2013-05-31 11:50:39 C 14 33 39.55 -22 20 59.1 q Q62
2013-05-31 11:51:37 C 14 33 40.83 -22 20 47.9 q Q62
2013-05-31 11:52:03 C 14 33 41.41 -22 20 42.6 q Q62
2013-05-31 11:52:54 C 14 33 42.50 -22 20 33.0 q Q62
2013-05-31 11:53:19 C 14 33 43.08 -22 20 27.9 q Q62
2013-05-31 11:53:47 C 14 33 43.69 -22 20 22.5 q Q62
2013-05-31 11:54:38 C 14 33 44.82 -22 20 12.5 q Q62
2013-05-31 11:55:32 C 14 33 45.97 -22 20 02.4 q Q62
2013-05-31 20:32:18 C 14 45 30.76 -20 42 27.9 v A77
2013-05-31 20:33:23 C 14 45 32.11 -20 42 16.7 v A77
2013-05-31 20:34:25 C 14 45 33.50 -20 42 04.5 v A77
2013-05-31 20:36:31 C 14 45 36.22 -20 41 40.8 v A77
2013-05-31 20:37:33 C 14 45 37.50 -20 41 27.8 v A77
2013-05-31 20:38:36 C 14 45 38.98 -20 41 13.8 v A77
2013-05-31 20:39:38 C 14 45 40.35 -20 41 02.3 v A77
2013-05-31 20:40:40 C 14 45 41.67 -20 40 50.6 v A77
2013-05-31 20:41:43 C 14 45 42.93 -20 40 38.1 v A77
2013-05-31 20:42:46 C 14 45 44.48 -20 40 23.0 v A77
2013-05-31 20:43:49 C 14 45 45.65 -20 40 13.2 v A77
2013-05-31 20:44:51 C 14 45 47.08 -20 40 01.4 v A77
2013-05-31 20:45:54 C 14 45 48.50 -20 39 48.2 v A77
2013-05-31 20:46:56 C 14 45 49.69 -20 39 34.4 v A77
2013-05-31 20:47:59 C 14 45 51.18 -20 39 23.0 v A77
2013-05-31 20:49:03 C 14 45 52.46 -20 39 10.7 v A77
2013-05-31 20:50:06 C 14 45 53.83 -20 38 58.6 v A77
2013-05-31 20:51:09 C 14 45 55.26 -20 38 46.7 v A77
2013-05-31 20:52:12 C 14 45 56.45 -20 38 34.1 v A77
2013-05-31 20:53:14 C 14 45 57.87 -20 38 20.2 v A77
2013-05-31 20:54:17 C 14 45 59.16 -20 38 06.7 v A77
2013-05-31 20:55:20 C 14 46 00.73 -20 37 53.1 v A77
2013-05-31 20:56:22 C 14 46 02.04 -20 37 43.0 v A77
2013-05-31 20:57:25 C 14 46 03.49 -20 37 29.8 v A77
2013-05-31 20:58:28 C 14 46 04.69 -20 37 17.4 v A77
2013-05-31 21:01:35 C 14 46 08.77 -20 36 39.4 v A77
2013-05-31 21:02:37 C 14 46 10.11 -20 36 27.7 v A77
2013-05-31 21:03:39 C 14 46 11.39 -20 36 15.6 v A77
2013-05-31 21:04:42 C 14 46 12.85 -20 36 03.1 v A77
2013-05-31 21:08:50 C 14 46 18.13 -20 35 11.9 v A77
2013-05-31 21:09:52 C 14 46 19.49 -20 35 01.7 v A77
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)