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
2013-07-01 23:35:00 C 19 01 05.32 +20 42 40.8 i C91
2013-07-01 23:39:00 C 19 01 05.45 +20 42 40.4 i C91
2013-07-01 23:42:59 C 19 01 05.59 +20 42 39.9 i C91
2013-07-02 07:13:54 C 19 01 24.71 +20 41 56.0 q H45
2013-07-02 07:15:52 C 19 01 24.80 +20 41 55.7 q H45
2013-07-02 07:17:50 C 19 01 24.86 +20 41 55.4 q H45
2013-07-02 07:19:35 C 19 01 24.92 +20 41 55.2 q H45
2013-07-02 07:20:57 C 19 01 24.96 +20 41 55.0 q H45
2013-07-05 23:39:14 C 19 04 45.36 +20 24 58.2 q K20
2013-07-06 00:04:52 C 19 04 46.01 +20 24 51.1 q K20
2013-07-06 00:39:19 C 19 04 46.91 +20 24 42.5 q K20
2013-07-06 21:32:40 C 19 05 28.65 +20 19 00.1 q C23
2013-07-06 21:34:24 C 19 05 28.69 +20 18 59.5 q C23
2013-07-06 21:36:08 C 19 05 28.73 +20 18 59.2 q C23
2013-07-06 21:37:53 C 19 05 28.78 +20 18 58.7 q C23
2013-07-06 22:08:54 C 19 05 29.55 +20 18 50.3 q C23
2013-07-06 22:09:08 C 19 05 29.57 +20 18 52.6 q A13
2013-07-06 22:10:03 C 19 05 29.57 +20 18 50.1 q C23
2013-07-06 22:11:12 C 19 05 29.61 +20 18 49.8 q C23
2013-07-06 22:12:57 C 19 05 29.65 +20 18 49.1 q C23
2013-07-06 22:32:55 C 19 05 30.12 +20 18 47.9 q A13
2013-07-06 22:55:27 C 19 05 30.66 +20 18 40.1 q A13
2013-07-06 23:56:37 C 19 05 32.17 +20 18 20.1 q C23
2013-07-06 23:57:47 C 19 05 32.19 +20 18 19.9 q C23
2013-07-06 23:58:56 C 19 05 32.22 +20 18 19.6 q C23
2013-07-07 21:49:52 C 19 06 12.77 +20 11 42.6 q G34
2013-07-07 21:55:14 C 19 06 12.88 +20 11 40.8 q G34
2013-07-07 22:00:35 C 19 06 13.00 +20 11 39.2 q G34
2013-07-07 22:42:45 C 19 06 14.18 +20 11 25.7 q C23
2013-07-07 22:45:39 C 19 06 14.25 +20 11 24.8 q C23
2013-07-07 22:49:07 C 19 06 14.33 +20 11 23.8 q C23
2013-07-07 23:13:09 C 19 06 14.90 +20 11 17.0 q K20
2013-07-07 23:31:32 C 19 06 15.30 +20 11 11.2 q K20
2013-07-07 23:37:54 C 19 06 15.45 +20 11 09.2 q K20
2013-07-08 00:53:51 C 19 06 17.14 +20 10 43.9 q C23
2013-07-08 00:56:45 C 19 06 17.20 +20 10 43.0 q C23
2013-07-08 00:59:03 C 19 06 17.26 +20 10 42.3 q C23
2013-07-08 21:29:12 C 19 06 54.08 +20 03 53.7 q K20
2013-07-08 21:44:28 C 19 06 54.39 +20 03 48.7 q K20
2013-07-08 21:52:56 C 19 06 54.56 +20 03 45.4 q K20
2013-07-08 22:40:47 C 19 06 55.54 +20 03 29.3 c 127
2013-07-08 22:56:54 C 19 06 55.89 +20 03 23.8 c 127
2013-07-08 23:04:55 C 19 06 56.05 +20 03 21.0 c 127
2013-07-09 21:11:57 C 19 07 33.03 +19 55 23.7 q K20
2013-07-09 21:15:40 C 19 07 33.14 +19 55 22.5 q K20
2013-07-09 21:29:39 C 19 07 33.40 +19 55 16.4 q C23
2013-07-09 21:31:58 C 19 07 33.45 +19 55 16.4 q K20
2013-07-09 21:33:08 C 19 07 33.47 +19 55 15.3 q C23
2013-07-09 21:37:47 C 19 07 33.58 +19 55 13.6 q C23
2013-07-09 22:53:32 C 19 07 35.11 +19 54 46.3 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)