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
2013-06-01 22:06:49 C 15 18 27.94 -15 27 52.3 q C73
2013-06-01 22:07:02 C 15 18 33.56 -15 27 40.5 u 941
2013-06-01 22:07:09 C 15 18 28.32 -15 27 48.2 q C73
2013-06-01 22:07:28 C 15 18 28.72 -15 27 44.4 q C73
2013-06-01 22:07:48 C 15 18 29.10 -15 27 40.3 q C73
2013-06-01 22:08:07 C 15 18 29.51 -15 27 36.0 q C73
2013-06-01 22:08:28 C 15 18 29.88 -15 27 31.7 q C73
2013-06-01 22:08:48 C 15 18 30.28 -15 27 27.8 q C73
2013-06-01 22:09:06 C 15 18 36.00 -15 27 14.6 u 941
2013-06-01 22:09:07 C 15 18 30.66 -15 27 24.0 q C73
2013-06-01 22:09:27 C 15 18 31.06 -15 27 19.3 q C73
2013-06-01 22:09:46 C 15 18 31.45 -15 27 15.5 q C73
2013-06-01 22:10:05 C 15 18 31.84 -15 27 11.2 q C73
2013-06-01 22:10:25 C 15 18 32.23 -15 27 07.2 q C73
2013-06-01 22:10:28 C 15 18 37.57 -15 26 58.3 u 941
2013-06-01 22:10:44 C 15 18 32.61 -15 27 03.4 q C73
2013-06-01 22:11:04 C 15 18 33.01 -15 26 59.0 q C73
2013-06-01 22:11:27 C 15 18 33.44 -15 26 54.5 q C73
2013-06-01 22:11:43 C 15 18 37.94 -15 27 03.8 q C23
2013-06-01 22:11:46 C 15 18 33.83 -15 26 50.3 q C73
2013-06-01 22:12:06 C 15 18 34.22 -15 26 46.4 q C73
2013-06-01 22:12:25 C 15 18 34.61 -15 26 42.4 q C73
2013-06-01 22:12:44 C 15 18 35.00 -15 26 38.1 q C73
2013-06-01 22:13:04 C 15 18 35.39 -15 26 34.0 q C73
2013-06-01 22:13:23 C 15 18 35.77 -15 26 29.9 q C73
2013-06-01 22:13:43 C 15 18 36.17 -15 26 25.9 q C73
2013-06-01 22:14:04 C 15 18 36.56 -15 26 21.8 q C73
2013-06-01 22:14:10 C 15 18 43.25 -15 26 05.1 q Z74
2013-06-01 22:14:16 C 15 18 40.99 -15 26 32.0 q C23
2013-06-01 22:14:23 C 15 18 36.95 -15 26 17.6 q C73
2013-06-01 22:14:43 C 15 18 37.33 -15 26 13.5 q C73
2013-06-01 22:15:01 C 15 18 44.24 -15 25 54.7 q Z74
2013-06-01 22:15:02 C 15 18 37.72 -15 26 09.4 q C73
2013-06-01 22:15:22 C 15 18 38.12 -15 26 05.5 q C73
2013-06-01 22:15:32 C 15 18 44.84 -15 25 48.3 q Z74
2013-06-01 22:15:42 C 15 18 38.50 -15 26 01.4 q C73
2013-06-01 22:16:01 C 15 18 38.90 -15 25 57.1 q C73
2013-06-01 22:16:20 C 15 18 39.28 -15 25 53.2 q C73
2013-06-01 22:16:39 C 15 18 39.67 -15 25 49.4 q C73
2013-06-01 22:16:59 C 15 18 40.07 -15 25 45.0 q C73
2013-06-01 22:17:03 C 15 18 46.67 -15 25 29.6 q Z74
2013-06-01 22:17:18 C 15 18 40.44 -15 25 40.9 q C73
2013-06-01 22:17:35 C 15 18 47.30 -15 25 22.6 q Z74
2013-06-01 22:17:38 C 15 18 40.85 -15 25 36.8 q C73
2013-06-01 22:17:57 C 15 18 41.22 -15 25 32.6 q C73
2013-06-01 22:18:07 C 15 18 47.89 -15 25 16.6 q Z74
2013-06-01 22:18:17 C 15 18 41.61 -15 25 28.7 q C73
2013-06-01 22:18:32 C 15 18 48.40 -15 25 11.2 q Z74
2013-06-01 22:18:38 C 15 18 42.01 -15 25 24.4 q C73
2013-06-01 22:18:57 C 15 18 42.40 -15 25 20.2 q C73
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)