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
2013-05-23 02:25:24 C 10 50 28.77 -37 57 43.4 H78
2013-05-23 02:26:00 C 10 50 29.13 -37 57 43.5 H78
2013-05-23 02:26:35 C 10 50 29.50 -37 57 43.5 H78
2013-05-23 02:28:21 C 10 50 30.57 -37 57 42.6 H78
2013-05-23 02:28:57 C 10 50 30.92 -37 57 42.5 H78
2013-05-23 02:29:31 C 10 50 31.24 -37 57 41.7 H78
2013-05-23 02:30:22 C 10 50 31.78 -37 57 41.4 H78
2013-05-23 02:32:26 C 10 50 33.03 -37 57 40.3 H78
2013-05-23 02:34:29 C 10 50 34.26 -37 57 39.7 H78
2013-05-23 02:38:36 C 10 50 36.71 -37 57 37.5 H78
2013-05-23 02:40:40 C 10 50 38.00 -37 57 37.1 H78
2013-05-23 02:42:44 C 10 50 39.23 -37 57 36.1 H78
2013-05-23 02:44:47 C 10 50 40.45 -37 57 34.8 H78
2013-05-23 02:46:51 C 10 50 41.72 -37 57 33.9 H78
2013-05-23 02:48:53 C 10 50 42.94 -37 57 33.1 H78
2013-05-23 02:50:57 C 10 50 44.20 -37 57 32.0 H78
2013-05-23 02:53:00 C 10 50 45.45 -37 57 31.1 H78
2013-05-23 02:55:04 C 10 50 46.70 -37 57 30.0 H78
2013-05-23 02:57:08 C 10 50 47.96 -37 57 29.1 H78
2013-05-23 02:59:11 C 10 50 49.18 -37 57 27.8 H78
2013-05-23 03:01:15 C 10 50 50.43 -37 57 27.1 H78
2013-05-23 03:07:25 C 10 50 54.22 -37 57 23.9 H78
2013-05-23 03:09:29 C 10 50 55.45 -37 57 22.7 H78
2013-05-23 03:11:33 C 10 50 56.73 -37 57 21.9 H78
2013-05-23 03:13:37 C 10 50 58.00 -37 57 20.7 H78
2013-05-23 03:16:50 C 10 50 59.90 -37 57 19.1 H78
2013-05-23 03:19:03 C 10 51 01.29 -37 57 17.9 H78
2013-05-23 03:23:10 C 10 51 03.79 -37 57 15.8 H78
2013-05-23 03:25:13 C 10 51 05.06 -37 57 14.4 H78
2013-05-23 07:18:10 C 10 53 44.84 -37 55 16.3 P E89
2013-05-23 07:25:07 C 10 53 49.20 -37 55 14.1 P E89
2013-05-23 07:56:01 C 10 54 08.70 -37 55 03.3 P E89
2013-05-23 08:19:33 C 10 54 23.41 -37 54 54.0 P E89
2013-05-24 00:08:34 C 11 05 28.11 -37 49 10.2 H78
2013-05-24 00:10:31 C 11 05 29.44 -37 49 08.9 H78
2013-05-24 00:12:05 C 11 05 30.48 -37 49 08.1 H78
2013-05-24 00:13:39 C 11 05 31.54 -37 49 06.9 H78
2013-05-24 00:15:12 C 11 05 32.60 -37 49 06.0 H78
2013-05-24 00:16:45 C 11 05 33.67 -37 49 05.0 H78
2013-05-24 00:18:19 C 11 05 34.74 -37 49 04.2 H78
2013-05-24 00:19:53 C 11 05 35.83 -37 49 02.9 H78
2013-05-24 00:21:26 C 11 05 36.88 -37 49 02.4 H78
2013-05-24 00:22:59 C 11 05 37.93 -37 49 01.4 H78
2013-05-24 00:24:33 C 11 05 38.98 -37 49 00.3 H78
2013-05-24 01:27:40 C 11 06 20.06 -37 46 43.1 q I39
2013-05-24 02:32:44 C 11 07 06.40 -37 45 47.3 q I39
2013-05-24 08:35:26 C 11 11 46.02 -37 41 41.6 P E89
2013-05-24 08:38:18 C 11 11 48.14 -37 41 38.8 P E89
2013-05-24 08:57:14 C 11 12 02.04 -37 41 21.6 P E89
2013-05-24 09:05:12 C 11 12 07.97 -37 41 14.6 P E89
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)