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
2013-07-09 22:57:35 C 19 07 35.18 +19 54 44.9 q C23
2013-07-09 23:30:00 C 19 07 35.65 +19 54 36.4 i C91
2013-07-09 23:35:59 C 19 07 35.75 +19 54 33.9 i C91
2013-07-09 23:39:00 C 19 07 35.81 +19 54 32.9 i C91
2013-07-09 23:42:59 C 19 07 35.90 +19 54 31.6 i C91
2013-07-09 23:46:59 C 19 07 35.97 +19 54 30.0 i C91
2013-07-10 01:27:24 C 19 07 38.20 +19 53 48.0 q C23
2013-07-10 01:30:18 C 19 07 38.26 +19 53 46.9 q C23
2013-07-10 01:32:36 C 19 07 38.31 +19 53 46.1 q C23
2013-07-10 23:35:45 C 19 08 13.22 +19 45 12.9 o A32
2013-07-10 23:41:35 C 19 08 13.33 +19 45 10.6 o A32
2013-07-10 23:47:25 C 19 08 13.44 +19 45 08.3 o A32
2013-07-11 21:17:19 C 19 08 46.61 +19 36 19.5 q C23
2013-07-11 21:19:38 C 19 08 46.64 +19 36 19.0 q C23
2013-07-11 21:21:57 C 19 08 46.70 +19 36 17.5 q C23
2013-07-11 21:22:26 C 19 08 46.46 +19 36 19.6 u 118
2013-07-11 22:07:03 C 19 08 47.52 +19 35 59.7 q C23
2013-07-11 22:09:21 C 19 08 47.56 +19 35 58.5 q C23
2013-07-11 22:11:06 C 19 08 47.59 +19 35 57.8 q C23
2013-07-11 22:20:15 C 19 08 47.49 +19 35 55.8 u 118
2013-07-11 22:33:03 C 19 08 47.97 +19 35 49.5 c 127
2013-07-11 22:41:50 C 19 08 48.14 +19 35 46.0 c 127
2013-07-11 23:02:07 C 19 08 48.50 +19 35 37.3 c 127
2013-07-11 23:10:14 C 19 08 48.64 +19 35 34.0 c 127
2013-07-11 23:20:07 C 19 08 48.55 +19 35 30.4 u 118
2013-07-11 23:50:02 C 19 08 49.08 +19 35 17.5 u 118
2013-07-12 00:05:01 C 19 08 49.35 +19 35 11.0 u 118
2013-07-12 06:21:36 C 19 08 58.85 +19 32 38.1 q H45
2013-07-12 06:23:42 C 19 08 58.88 +19 32 37.2 q H45
2013-07-12 06:25:20 C 19 08 58.91 +19 32 36.5 q H45
2013-07-12 06:26:47 C 19 08 58.93 +19 32 35.8 q H45
2013-07-12 06:28:18 C 19 08 58.96 +19 32 35.2 q H45
2013-07-12 06:30:28 C 19 08 58.99 +19 32 34.3 q H45
2013-07-12 08:40:11 C 19 09 01.97 +19 31 37.5 r G60
2013-07-12 09:23:30 C 19 09 02.68 +19 31 18.1 r G60
2013-07-12 22:38:46 C 19 09 22.25 +19 25 24.5 u 118
2013-07-12 22:48:44 C 19 09 22.43 +19 25 20.0 u 118
2013-07-12 22:53:43 C 19 09 22.51 +19 25 17.8 u 118
2013-07-12 23:59:37 C 19 09 23.85 +19 24 45.8 o A32
2013-07-13 00:05:06 C 19 09 23.95 +19 24 43.3 o A32
2013-07-13 00:10:35 C 19 09 24.05 +19 24 40.9 o A32
2013-07-13 06:52:20 C 19 09 33.37 +19 21 50.2 q H45
2013-07-13 06:54:18 C 19 09 33.40 +19 21 49.3 q H45
2013-07-13 06:55:46 C 19 09 33.42 +19 21 48.7 q H45
2013-07-13 06:57:04 C 19 09 33.44 +19 21 48.0 q H45
2013-07-13 06:58:26 C 19 09 33.46 +19 21 47.5 q H45
2013-07-13 07:00:34 C 19 09 33.50 +19 21 46.4 q H45
2013-07-13 21:12:42 C 19 09 54.38 +19 15 07.7 q K20
2013-07-13 21:19:08 C 19 09 54.53 +19 15 05.1 q K20
2013-07-13 21:24:33 C 19 09 54.53 +19 15 02.3 q C23
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)