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
2013-06-10 22:20:20 C 17 53 29.28 +12 54 55.3 12.7 u 089
2013-06-10 22:21:44 C 17 53 32.02 +12 54 50.6 q C23
2013-06-10 22:22:41 C 17 53 30.05 +12 55 03.3 12.6 u 089
2013-06-10 22:23:22 C 17 53 32.56 +12 54 56.4 q C23
2013-06-10 22:24:36 C 17 53 32.96 +12 55 00.7 q C23
2013-06-10 22:25:02 C 17 53 30.81 +12 55 11.5 12.7 u 089
2013-06-10 22:25:12 C 17 53 32.41 +12 55 03.4 q C43
2013-06-10 22:25:51 C 17 53 33.38 +12 55 05.0 q C23
2013-06-10 22:27:17 C 17 53 33.09 +12 55 10.8 q C43
2013-06-10 22:27:23 C 17 53 31.57 +12 55 19.8 12.7 u 089
2013-06-10 22:27:29 C 17 53 33.92 +12 55 10.8 q C23
2013-06-10 22:29:23 C 17 53 33.78 +12 55 18.1 q C43
2013-06-10 22:29:44 C 17 53 32.33 +12 55 27.9 12.7 u 089
2013-06-10 22:31:12 C 17 53 34.39 +12 55 24.5 q C43
2013-06-10 22:32:05 C 17 53 33.09 +12 55 35.9 12.7 u 089
2013-06-10 22:32:54 C 17 53 34.94 +12 55 30.4 q C43
2013-06-10 22:34:26 C 17 53 33.87 +12 55 44.0 12.7 u 089
2013-06-10 22:34:49 C 17 53 35.57 +12 55 37.1 q C43
2013-06-10 22:36:47 C 17 53 34.62 +12 55 52.2 12.8 u 089
2013-06-10 22:39:08 C 17 53 35.39 +12 56 00.4 12.8 u 089
2013-06-10 22:39:59 n 17 53 38.40 +12 55 49.0 q Z92
2013-06-10 22:40:15 n 17 53 38.50 +12 55 50.1 q Z92
2013-06-10 22:40:31 n 17 53 38.59 +12 55 51.2 q Z92
2013-06-10 22:40:45 n 17 53 38.67 +12 55 52.1 q Z92
2013-06-10 22:40:59 n 17 53 38.75 +12 55 53.0 q Z92
2013-06-10 23:20:04 n 17 53 51.62 +12 58 08.8 q Z92
2013-06-10 23:20:21 n 17 53 51.71 +12 58 09.9 q Z92
2013-06-10 23:20:39 n 17 53 51.81 +12 58 11.1 q Z92
2013-06-10 23:20:54 n 17 53 51.89 +12 58 12.1 q Z92
2013-06-10 23:21:08 n 17 53 51.97 +12 58 13.0 q Z92
2013-06-10 23:26:14 C 17 53 52.40 +12 58 35.0 q C43
2013-06-10 23:28:19 C 17 53 53.02 +12 58 41.9 q C43
2013-06-10 23:30:25 C 17 53 53.70 +12 58 49.2 q C43
2013-06-10 23:32:30 C 17 53 54.45 +12 58 56.7 q C43
2013-06-11 07:18:54 C 17 56 32.02 +13 25 27.2 q H45
2013-06-11 07:20:02 C 17 56 32.37 +13 25 30.8 q H45
2013-06-11 07:20:55 C 17 56 32.64 +13 25 33.7 q H45
2013-06-11 07:22:03 C 17 56 32.98 +13 25 37.5 q H45
2013-06-11 07:23:13 C 17 56 33.34 +13 25 41.3 q H45
2013-06-11 07:24:15 C 17 56 33.65 +13 25 44.6 q H45
2013-06-11 07:25:20 C 17 56 33.98 +13 25 48.1 q H45
2013-06-11 07:26:25 C 17 56 34.31 +13 25 51.5 q H45
2013-06-11 20:25:08 C 18 00 50.29 +14 05 50.6 r 006
2013-06-11 20:30:25 C 18 00 51.85 +14 06 06.8 r 006
2013-06-11 20:37:03 C 18 00 53.80 +14 06 27.0 r 006
2013-06-11 22:38:58 C 18 01 27.71 +14 12 23.1 q C47
2013-06-11 22:39:20 C 18 01 27.83 +14 12 20.0 q C43
2013-06-11 22:41:08 C 18 01 28.35 +14 12 25.1 q C43
2013-06-11 22:42:57 C 18 01 28.88 +14 12 30.5 q C43
2013-06-11 22:43:06 C 18 01 28.88 +14 12 35.3 q C47
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)