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 23:14:17 C 14 49 02.38 -20 10 17.6 q 987
2013-05-31 23:14:39 C 14 49 02.81 -20 10 13.8 q 987
2013-05-31 23:17:44 C 14 49 06.86 -20 09 36.8 q 987
2013-05-31 23:18:54 C 14 49 08.36 -20 09 22.2 q 987
2013-05-31 23:19:26 C 14 49 09.00 -20 09 15.5 q 987
2013-05-31 23:20:04 C 14 49 09.84 -20 09 08.3 q 987
2013-06-01 03:14:12 C 14 54 30.27 -19 20 56.2 o G48
2013-06-01 03:14:29 C 14 54 30.66 -19 20 52.4 o G48
2013-06-01 03:14:48 C 14 54 31.01 -19 20 48.9 o G48
2013-06-01 03:15:05 C 14 54 31.40 -19 20 45.4 o G48
2013-06-01 03:15:23 C 14 54 31.78 -19 20 41.8 o G48
2013-06-01 03:15:41 C 14 54 32.16 -19 20 38.4 o G48
2013-06-01 03:32:38 C 14 54 53.67 -19 17 13.9 o G48
2013-06-01 03:32:56 C 14 54 54.05 -19 17 10.1 o G48
2013-06-01 03:33:14 C 14 54 54.42 -19 17 06.7 o G48
2013-06-01 03:33:32 C 14 54 54.82 -19 17 03.1 o G48
2013-06-01 03:33:49 C 14 54 55.18 -19 16 59.6 o G48
2013-06-01 03:34:07 C 14 54 55.56 -19 16 56.1 o G48
2013-06-01 20:07:39 C 15 16 05.98 -15 52 38.1 o A92
2013-06-01 20:17:55 C 15 16 18.31 -15 50 29.7 o A92
2013-06-01 20:28:11 C 15 16 30.52 -15 48 22.7 o A92
2013-06-01 20:38:19 C 15 16 42.60 -15 46 16.6 o A92
2013-06-01 20:47:31 C 15 16 53.71 -15 44 21.7 o A92
2013-06-01 20:58:10 C 15 17 06.37 -15 42 09.1 o A92
2013-06-01 21:06:19 C 15 17 20.66 -15 40 19.0 w 213
2013-06-01 21:08:50 C 15 17 19.11 -15 39 55.6 o A92
2013-06-01 21:15:59 C 15 17 27.64 -15 38 26.9 o A92
2013-06-01 21:28:30 C 15 17 42.43 -15 35 50.6 o A92
2013-06-01 21:51:46 C 15 18 15.90 -15 30 47.0 q I89
2013-06-01 21:53:28 C 15 18 17.92 -15 30 25.6 q I89
2013-06-01 21:54:00 C 15 18 18.57 -15 30 18.8 q I89
2013-06-01 21:55:43 C 15 18 20.59 -15 29 57.8 q I89
2013-06-01 21:57:24 C 15 18 22.59 -15 29 37.0 q I89
2013-06-01 21:59:09 C 15 18 24.64 -15 29 15.3 q I89
2013-06-01 22:01:33 C 15 18 21.67 -15 28 58.2 q C73
2013-06-01 22:01:56 C 15 18 22.10 -15 28 53.6 q C73
2013-06-01 22:02:15 C 15 18 22.49 -15 28 49.6 q C73
2013-06-01 22:02:34 C 15 18 22.89 -15 28 45.5 q C73
2013-06-01 22:02:54 C 15 18 23.26 -15 28 41.4 q C73
2013-06-01 22:03:13 C 15 18 23.66 -15 28 37.4 q C73
2013-06-01 22:03:33 C 15 18 24.05 -15 28 33.3 q C73
2013-06-01 22:03:54 C 15 18 24.44 -15 28 29.1 q C73
2013-06-01 22:04:12 C 15 18 24.84 -15 28 25.0 q C73
2013-06-01 22:04:33 C 15 18 25.22 -15 28 20.8 q C73
2013-06-01 22:04:52 C 15 18 25.60 -15 28 16.6 q C73
2013-06-01 22:05:12 C 15 18 26.00 -15 28 12.6 q C73
2013-06-01 22:05:31 C 15 18 26.38 -15 28 08.5 q C73
2013-06-01 22:05:51 C 15 18 26.77 -15 28 04.6 q C73
2013-06-01 22:06:10 C 15 18 27.17 -15 28 00.6 q C73
2013-06-01 22:06:29 C 15 18 27.56 -15 27 56.4 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)