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
2013-05-24 09:18:05 C 11 12 17.41 -37 41 01.7 P E89
2013-05-24 09:39:04 C 11 12 32.98 -37 40 41.1 P E89
2013-05-25 08:53:36 C 11 32 04.41 -37 14 42.2 q Q62
2013-05-25 09:07:30 C 11 32 16.20 -37 14 21.8 q Q62
2013-05-25 09:07:54 C 11 32 16.54 -37 14 21.1 q Q62
2013-05-25 09:08:17 C 11 32 16.88 -37 14 20.5 q Q62
2013-05-25 09:08:41 C 11 32 17.22 -37 14 19.9 q Q62
2013-05-25 09:09:06 C 11 32 17.55 -37 14 19.4 q Q62
2013-05-25 09:11:07 C 11 32 19.28 -37 14 16.4 q Q62
2013-05-25 09:11:32 C 11 32 19.62 -37 14 15.8 q Q62
2013-05-25 09:11:57 C 11 32 19.96 -37 14 15.1 q Q62
2013-05-25 22:44:31 C 11 45 00.03 -36 50 11.2 13.1 q I39
2013-05-25 23:25:15 C 11 45 37.68 -36 48 49.3 13.1 q I39
2013-05-26 00:06:21 C 11 46 15.84 -36 47 22.5 13.3 q I39
2013-05-26 08:01:43 C 11 54 13.10 -36 29 13.7 P E89
2013-05-26 08:10:00 C 11 54 21.18 -36 28 53.4 P E89
2013-05-26 13:20:09 C 11 59 34.38 -36 15 02.9 v E19
2013-05-26 13:21:22 C 11 59 35.52 -36 15 01.5 v E19
2013-05-26 13:22:35 C 11 59 36.89 -36 14 56.5 v E19
2013-05-27 00:47:00 C 12 12 08.71 -35 40 51.7 q I47
2013-05-27 00:48:07 C 12 12 09.87 -35 40 48.1 q I47
2013-05-27 00:49:26 C 12 12 11.29 -35 40 43.5 q I47
2013-05-27 00:50:19 C 12 12 12.25 -35 40 40.8 q I47
2013-05-27 00:55:02 C 12 12 17.23 -35 40 24.8 q I47
2013-05-27 00:56:07 C 12 12 18.40 -35 40 20.9 q I47
2013-05-27 00:57:14 C 12 12 19.61 -35 40 17.4 q I47
2013-05-27 00:58:20 C 12 12 20.76 -35 40 13.6 q I47
2013-05-27 00:59:26 C 12 12 21.94 -35 40 09.7 q I47
2013-05-27 01:00:32 C 12 12 23.12 -35 40 05.8 q I47
2013-05-27 01:01:38 C 12 12 24.31 -35 40 02.2 q I47
2013-05-27 01:02:44 C 12 12 25.46 -35 39 58.4 q I47
2013-05-28 02:02:32 C 12 42 08.08 -33 58 04.7 q H45
2013-05-28 02:04:48 C 12 42 10.87 -33 57 52.2 q H45
2013-05-28 02:05:40 C 12 42 11.96 -33 57 50.4 q H45
2013-05-28 02:07:28 C 12 42 14.07 -33 57 41.5 q H45
2013-05-28 02:08:11 C 12 42 14.90 -33 57 36.9 q H45
2013-05-28 02:08:58 C 12 42 15.84 -33 57 32.7 q H45
2013-05-28 02:09:44 C 12 42 16.71 -33 57 28.8 q H45
2013-05-28 02:12:46 C 12 42 20.32 -33 57 13.4 q H45
2013-05-28 02:13:48 C 12 42 21.62 -33 57 07.8 q H45
2013-05-28 02:14:31 C 12 42 22.51 -33 57 05.3 q H45
2013-05-28 02:17:09 C 12 42 25.61 -33 56 51.1 q H45
2013-05-28 02:17:42 C 12 42 26.36 -33 56 47.4 q H45
2013-05-28 02:19:55 C 12 42 28.94 -33 56 37.1 q H45
2013-05-28 02:25:10 C 12 42 35.25 -33 56 10.4 q H45
2013-05-28 09:32:16 C 12 51 40.50 -33 14 52.3 q E10
2013-05-28 09:41:36 C 12 51 51.99 -33 14 00.0 q E10
2013-05-28 09:46:57 C 12 51 58.58 -33 13 30.0 q E10
2013-05-28 09:55:10 C 12 52 08.69 -33 12 43.7 q E10
2013-05-28 10:03:29 C 12 52 18.92 -33 11 56.6 q E10
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)