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
2013-06-18 21:56:59 C 18 36 07.64 +19 05 11.7 i C91
2013-06-18 22:07:59 C 18 36 09.00 +19 05 22.5 i C91
2013-06-18 22:14:59 C 18 36 09.85 +19 05 29.4 i C91
2013-06-18 22:20:00 C 18 36 10.48 +19 05 34.2 i C91
2013-06-18 22:23:59 C 18 36 10.96 +19 05 38.3 i C91
2013-06-18 22:30:00 C 18 36 11.71 +19 05 44.2 i C91
2013-06-18 22:36:00 C 18 36 12.43 +19 05 49.9 i C91
2013-06-18 22:43:00 C 18 36 13.27 +19 05 56.8 i C91
2013-06-18 22:50:00 C 18 36 14.14 +19 06 03.5 i C91
2013-06-18 22:54:59 C 18 36 14.74 +19 06 08.3 i C91
2013-06-18 23:01:59 C 18 36 15.58 +19 06 15.1 i C91
2013-06-18 23:08:59 C 18 36 16.44 +19 06 21.9 i C91
2013-06-19 09:39:24 C 18 37 37.19 +19 16 01.6 q H45
2013-06-19 09:40:25 C 18 37 37.30 +19 16 02.4 q H45
2013-06-19 09:41:41 C 18 37 37.46 +19 16 03.6 q H45
2013-06-19 09:42:33 C 18 37 37.55 +19 16 04.2 q H45
2013-06-19 09:43:51 C 18 37 37.71 +19 16 05.3 q H45
2013-06-19 09:44:55 C 18 37 37.84 +19 16 06.3 q H45
2013-06-19 09:45:44 C 18 37 37.93 +19 16 06.9 q H45
2013-06-19 09:46:43 C 18 37 38.04 +19 16 07.8 q H45
2013-06-19 19:44:41 C 18 39 00.24 +19 24 30.6 q A84
2013-06-19 19:52:54 C 18 39 01.17 +19 24 38.0 q A84
2013-06-19 19:54:48 C 18 39 01.37 +19 24 39.7 q A84
2013-06-19 19:56:42 C 18 39 01.58 +19 24 41.3 q A84
2013-06-19 19:58:38 C 18 39 01.81 +19 24 43.0 q A84
2013-06-19 20:00:32 C 18 39 02.02 +19 24 44.8 q A84
2013-06-19 20:02:21 C 18 39 02.23 +19 24 46.3 q A84
2013-06-19 20:04:10 C 18 39 02.42 +19 24 47.8 q A84
2013-06-19 20:05:59 C 18 39 02.62 +19 24 49.4 q A84
2013-06-19 20:07:48 C 18 39 02.81 +19 24 50.9 q A84
2013-06-19 20:12:05 C 18 39 03.31 +19 24 54.7 q A84
2013-06-19 20:13:55 C 18 39 03.51 +19 24 56.3 q A84
2013-06-19 20:15:45 C 18 39 03.72 +19 24 57.9 q A84
2013-06-19 20:17:34 C 18 39 03.92 +19 24 59.6 q A84
2013-06-19 20:19:23 C 18 39 04.12 +19 25 01.0 q A84
2013-06-19 20:21:12 C 18 39 04.32 +19 25 02.6 q A84
2013-06-19 20:23:02 C 18 39 04.53 +19 25 04.2 q A84
2013-06-19 20:24:51 C 18 39 04.72 +19 25 05.8 q A84
2013-06-19 20:26:40 C 18 39 04.93 +19 25 07.3 q A84
2013-06-19 20:28:29 C 18 39 05.13 +19 25 08.9 q A84
2013-06-19 21:45:33 C 18 39 15.03 +19 26 04.7 r 006
2013-06-19 21:50:22 C 18 39 15.58 +19 26 08.9 r 006
2013-06-19 21:55:31 C 18 39 16.17 +19 26 13.0 r 006
2013-06-20 21:37:42 C 18 42 03.33 +19 43 55.5 q A84
2013-06-20 21:39:34 C 18 42 03.51 +19 43 56.8 q A84
2013-06-20 21:41:27 C 18 42 03.68 +19 43 58.0 q A84
2013-06-20 21:43:17 C 18 42 03.87 +19 43 59.5 q A84
2013-06-20 21:45:10 C 18 42 04.06 +19 44 00.7 q A84
2013-06-20 21:47:01 C 18 42 04.20 +19 44 02.0 q A84
2013-06-20 21:48:55 C 18 42 04.40 +19 44 03.4 q A84
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)