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 21:10:54 C 14 46 20.79 -20 34 49.7 v A77
2013-05-31 21:11:57 C 14 46 22.17 -20 34 37.0 v A77
2013-05-31 21:12:59 C 14 46 23.42 -20 34 24.5 v A77
2013-05-31 21:17:08 C 14 46 28.81 -20 33 33.6 v A77
2013-05-31 21:18:11 C 14 46 30.20 -20 33 22.4 v A77
2013-05-31 21:19:14 C 14 46 31.46 -20 33 10.8 v A77
2013-05-31 21:20:17 C 14 46 32.95 -20 32 57.6 v A77
2013-05-31 21:21:19 C 14 46 34.28 -20 32 44.8 v A77
2013-05-31 21:22:21 C 14 46 35.76 -20 32 30.9 v A77
2013-05-31 21:25:57 C 14 46 40.20 -20 31 59.1 q C23
2013-05-31 21:26:12 C 14 46 40.53 -20 31 56.2 q C23
2013-05-31 21:26:48 C 14 46 41.30 -20 31 49.2 q C23
2013-05-31 21:27:13 C 14 46 41.83 -20 31 44.2 q C23
2013-05-31 21:27:38 C 14 46 42.36 -20 31 39.1 q C23
2013-05-31 21:28:03 C 14 46 42.89 -20 31 34.3 q C23
2013-05-31 21:32:24 C 14 46 48.62 -20 30 41.3 q C23
2013-05-31 21:33:37 C 14 46 50.16 -20 30 27.2 q C23
2013-05-31 21:34:02 C 14 46 50.70 -20 30 22.4 q C23
2013-05-31 21:34:27 C 14 46 51.18 -20 30 17.7 q C23
2013-05-31 21:35:16 C 14 46 52.42 -20 30 06.6 q C23
2013-05-31 21:35:40 C 14 46 52.85 -20 30 02.2 q C23
2013-05-31 21:36:06 C 14 46 53.36 -20 29 57.9 q C23
2013-05-31 21:36:55 C 14 46 54.33 -20 29 48.8 q C23
2013-05-31 21:37:20 C 14 46 54.96 -20 29 42.9 q C23
2013-05-31 21:37:44 C 14 46 55.48 -20 29 38.2 q C23
2013-05-31 21:38:09 C 14 46 56.01 -20 29 33.0 q C23
2013-05-31 21:38:34 C 14 46 56.54 -20 29 28.2 q C23
2013-05-31 21:38:58 C 14 46 57.00 -20 29 23.9 q C23
2013-05-31 21:40:01 C 14 46 59.56 -20 29 09.5 q J84
2013-05-31 21:42:45 C 14 47 03.10 -20 28 37.2 q J84
2013-05-31 21:43:05 C 14 47 02.44 -20 28 34.1 q C23
2013-05-31 21:44:20 C 14 47 04.03 -20 28 18.8 q C23
2013-05-31 21:44:45 C 14 47 04.61 -20 28 13.7 q C23
2013-05-31 21:45:28 C 14 47 06.63 -20 28 04.5 q J84
2013-05-31 22:17:32 C 14 47 48.18 -20 21 39.2 q J84
2013-05-31 22:20:15 C 14 47 51.72 -20 21 06.4 q J84
2013-05-31 22:22:59 C 14 47 55.23 -20 20 33.6 q J84
2013-05-31 22:28:58 C 14 48 03.39 -20 19 04.9 w I99
2013-05-31 22:31:28 C 14 48 06.58 -20 18 34.7 w I99
2013-05-31 22:35:12 C 14 48 11.41 -20 17 49.7 w I99
2013-05-31 22:55:52 C 14 48 38.46 -20 14 00.8 q 987
2013-05-31 22:56:46 C 14 48 39.65 -20 13 51.1 q 987
2013-05-31 22:57:35 C 14 48 40.68 -20 13 41.0 q 987
2013-05-31 22:59:49 C 14 48 43.60 -20 13 15.0 q 987
2013-05-31 23:00:42 C 14 48 44.73 -20 13 03.5 q 987
2013-05-31 23:01:35 C 14 48 45.89 -20 12 52.9 q 987
2013-05-31 23:02:30 C 14 48 47.07 -20 12 41.8 q 987
2013-05-31 23:03:23 C 14 48 48.20 -20 12 31.3 q 987
2013-05-31 23:12:29 C 14 48 59.95 -20 10 41.2 q 987
2013-05-31 23:13:24 C 14 49 01.18 -20 10 29.0 q 987
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)