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
2013-08-05 02:20:24 C 19 21 15.16 +13 52 48.0 u H21
2013-08-09 21:07:37 C 19 24 10.93 +12 34 31.7 q C23
2013-08-09 21:12:21 C 19 24 10.98 +12 34 27.9 q C23
2013-08-09 21:17:04 C 19 24 11.11 +12 34 24.5 q C23
2013-08-09 21:21:48 C 19 24 11.21 +12 34 21.8 q C23
2013-08-11 22:45:10 C 19 25 33.12 +12 00 49.2 q C23
2013-08-11 22:49:54 C 19 25 33.23 +12 00 46.6 q C23
2013-08-14 22:41:28 C 19 27 40.02 +11 12 23.7 o A32
2013-08-14 22:46:13 C 19 27 40.18 +11 12 20.6 o A32
2013-08-14 22:50:57 C 19 27 40.31 +11 12 17.5 o A32
2013-08-14 23:00:27 C 19 27 40.59 +11 12 12.0 o A32
2013-08-15 21:36:39 C 19 28 22.54 +10 57 08.5 q C23
2013-08-15 21:40:49 C 19 28 22.67 +10 57 05.4 q C23
2013-08-15 21:44:58 C 19 28 22.79 +10 57 03.4 q C23
2013-08-17 20:40:27 C 19 29 52.20 +10 26 06.1 q 160
2013-08-17 20:44:09 C 19 29 52.32 +10 26 03.4 q 160
2013-08-17 20:48:02 C 19 29 52.45 +10 26 01.0 q 160
2013-08-18 20:53:29 C 19 30 39.73 +10 10 17.0 q 203
2013-08-18 21:10:32 C 19 30 40.19 +10 10 05.5 q 203
2013-08-22 02:35:18 C 19 33 18.97 +09 20 29.0 i G41
2013-08-22 02:49:43 C 19 33 19.47 +09 20 19.9 i G41
2013-08-22 03:05:18 C 19 33 19.93 +09 20 10.2 i G41
2013-09-19 03:02:54 C 20 02 36.08 +03 27 50.3 q 448
2013-09-19 03:11:48 C 20 02 36.45 +03 27 46.1 q 448
2013-09-19 03:21:09 C 20 02 36.91 +03 27 43.5 q 448
2013-10-01 01:54:06 C 20 17 55.69 +01 48 34.0 q 448
2013-10-01 02:10:55 C 20 17 56.55 +01 48 29.3 q 448
2013-10-01 02:26:46 C 20 17 57.43 +01 48 24.4 q 448
2013-10-03 03:58:05 C 20 20 43.61 +01 34 23.4 t H06
2013-10-03 04:01:17 C 20 20 43.82 +01 34 22.8 t H06
2013-10-03 04:04:28 C 20 20 43.94 +01 34 22.4 t H06
2013-10-03 04:07:39 C 20 20 44.12 +01 34 20.9 t H06
2013-10-03 04:10:51 C 20 20 44.35 +01 34 20.5 t H06
2013-10-03 04:14:04 C 20 20 44.50 +01 34 19.3 t H06
2013-10-03 04:17:17 C 20 20 44.71 +01 34 18.5 t H06
2013-10-03 04:20:28 C 20 20 44.93 +01 34 17.9 t H06
2013-10-03 04:23:38 C 20 20 45.01 +01 34 16.0 t H06
2013-10-03 04:26:51 C 20 20 45.13 +01 34 16.8 t H06
2013-10-09 02:21:42 C 20 28 53.17 +00 59 05.5 t H06
2013-10-09 02:29:39 C 20 28 53.64 +00 59 03.4 t H06
2013-10-09 02:37:37 C 20 28 54.08 +00 59 01.5 t H06
2013-10-09 02:45:34 C 20 28 54.57 +00 59 00.0 t H06
2013-10-09 02:53:31 C 20 28 55.00 +00 58 58.3 t H06
2013-10-10 03:01:45 C 20 30 19.52 +00 53 42.2 t G58
2013-10-10 03:14:14 C 20 30 20.22 +00 53 39.6 t G58
2013-10-10 03:46:43 C 20 30 22.08 +00 53 32.9 t G58
2014-10-28 11:41:02 C 02 37 36.946 +24 14 30.40 t F51
2014-10-28 12:18:37 C 02 37 35.357 +24 14 21.30 t F51
2015-12-09 12:00:53 C 05 12 17.001 +20 23 51.86 L F51
2015-12-09 12:20:52 C 05 12 16.041 +20 23 49.02 L F51
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)