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
2013-05-17 00:15:37 C 09 48 10.54 -37 21 16.2 H78
2013-05-17 00:16:12 C 09 48 10.69 -37 21 16.3 H78
2013-05-17 00:16:48 C 09 48 10.84 -37 21 16.4 H78
2013-05-17 00:17:23 C 09 48 10.98 -37 21 16.8 H78
2013-05-17 00:17:59 C 09 48 11.15 -37 21 16.9 H78
2013-05-17 00:18:34 C 09 48 11.28 -37 21 17.4 H78
2013-05-17 00:19:09 C 09 48 11.41 -37 21 17.6 H78
2013-05-17 00:19:44 C 09 48 11.54 -37 21 17.5 H78
2013-05-17 00:20:19 C 09 48 11.71 -37 21 17.9 H78
2013-05-17 00:22:41 C 09 48 12.28 -37 21 18.8 H78
2013-05-17 00:23:18 C 09 48 12.42 -37 21 18.7 H78
2013-05-17 00:23:54 C 09 48 12.58 -37 21 19.2 H78
2013-05-17 00:24:29 C 09 48 12.69 -37 21 19.3 H78
2013-05-17 00:25:05 C 09 48 12.87 -37 21 19.3 H78
2013-05-17 00:25:40 C 09 48 13.01 -37 21 19.5 H78
2013-05-17 00:26:15 C 09 48 13.15 -37 21 20.0 H78
2013-05-17 00:26:51 C 09 48 13.28 -37 21 20.4 H78
2013-05-17 00:27:27 C 09 48 13.46 -37 21 20.5 H78
2013-05-17 00:28:38 C 09 48 13.75 -37 21 20.9 H78
2013-05-17 00:29:49 C 09 48 14.05 -37 21 21.3 H78
2013-05-17 00:30:24 C 09 48 14.14 -37 21 21.6 H78
2013-05-17 08:33:19 C 09 50 32.16 -37 24 00.1 u Q62
2013-05-17 08:35:13 C 09 50 32.65 -37 24 00.9 u Q62
2013-05-17 08:37:28 C 09 50 33.24 -37 24 01.7 u Q62
2013-05-18 00:58:10 C 09 55 25.76 -37 31 32.8 H78
2013-05-18 00:59:19 C 09 55 26.09 -37 31 33.1 H78
2013-05-18 00:59:55 C 09 55 26.24 -37 31 33.4 H78
2013-05-18 01:00:29 C 09 55 26.41 -37 31 33.5 H78
2013-05-18 01:01:05 C 09 55 26.60 -37 31 33.7 H78
2013-05-18 01:01:40 C 09 55 26.75 -37 31 34.0 H78
2013-05-18 01:02:15 C 09 55 26.92 -37 31 34.1 H78
2013-05-18 01:02:51 C 09 55 27.07 -37 31 34.3 H78
2013-05-18 01:03:26 C 09 55 27.26 -37 31 34.4 H78
2013-05-18 01:04:02 C 09 55 27.43 -37 31 34.5 H78
2013-05-18 01:04:36 C 09 55 27.58 -37 31 34.7 H78
2013-05-18 01:05:12 C 09 55 27.75 -37 31 35.2 H78
2013-05-18 01:05:47 C 09 55 27.94 -37 31 35.2 H78
2013-05-18 01:06:23 C 09 55 28.08 -37 31 35.3 H78
2013-05-18 01:06:58 C 09 55 28.26 -37 31 35.8 H78
2013-05-18 01:07:33 C 09 55 28.42 -37 31 35.8 H78
2013-05-18 01:08:08 C 09 55 28.57 -37 31 35.8 H78
2013-05-18 01:08:43 C 09 55 28.77 -37 31 35.9 H78
2013-05-18 01:09:19 C 09 55 28.93 -37 31 36.2 H78
2013-05-18 01:09:54 C 09 55 29.07 -37 31 36.6 H78
2013-05-18 01:10:30 C 09 55 29.25 -37 31 36.5 H78
2013-05-18 01:11:05 C 09 55 29.42 -37 31 37.0 H78
2013-05-18 01:11:40 C 09 55 29.58 -37 31 36.9 H78
2013-05-18 01:12:16 C 09 55 29.75 -37 31 36.9 H78
2013-05-18 01:12:51 C 09 55 29.92 -37 31 37.5 H78
2013-05-18 01:13:26 C 09 55 30.10 -37 31 37.8 H78
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)