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
2013-06-23 00:18:19 C 18 47 13.56 +20 12 25.9 13.8 w C35
2013-06-23 00:23:06 C 18 47 13.93 +20 12 28.2 14.3 w C35
2013-06-23 00:24:02 C 18 47 14.01 +20 12 28.6 14.4 w C35
2013-06-23 00:24:58 C 18 47 14.07 +20 12 29.0 14.3 w C35
2013-06-23 00:26:49 C 18 47 14.23 +20 12 29.8 14.4 w C35
2013-06-23 00:28:41 C 18 47 14.35 +20 12 30.5 14.4 w C35
2013-06-23 01:55:01 C 18 47 21.13 +20 13 09.1 w 213
2013-06-24 20:05:00 C 18 50 59.48 +20 28 54.1 o A92
2013-06-24 20:15:35 C 18 51 00.14 +20 28 57.8 o A92
2013-06-24 20:25:05 C 18 51 00.88 +20 29 00.7 o A92
2013-06-24 20:35:39 C 18 51 01.52 +20 29 04.3 o A92
2013-06-24 20:45:31 C 18 51 02.28 +20 29 07.4 o A92
2013-06-24 20:55:24 C 18 51 02.93 +20 29 10.9 o A92
2013-06-24 21:40:14 C 18 51 07.29 +20 29 24.7 w I99
2013-06-24 21:47:42 C 18 51 07.81 +20 29 27.2 w I99
2013-06-24 21:55:13 C 18 51 08.32 +20 29 29.8 w I99
2013-06-25 06:02:08 C 18 51 44.01 +20 31 53.7 u H21
2013-06-25 06:05:11 C 18 51 44.19 +20 31 54.5 u H21
2013-06-25 06:09:34 C 18 51 44.46 +20 31 55.8 u H21
2013-06-25 06:12:36 C 18 51 44.65 +20 31 56.7 u H21
2013-06-25 06:16:32 C 18 51 44.90 +20 31 57.9 u H21
2013-06-25 06:20:55 C 18 51 45.17 +20 31 59.0 u H21
2013-06-25 21:09:17 C 18 52 52.28 +20 35 26.4 q C23
2013-06-25 21:10:26 C 18 52 52.35 +20 35 27.0 q C23
2013-06-25 21:12:10 C 18 52 52.48 +20 35 27.3 q C23
2013-06-25 21:13:54 C 18 52 52.58 +20 35 28.2 q C23
2013-06-25 21:15:04 C 18 52 52.66 +20 35 28.3 q C23
2013-06-25 21:16:48 C 18 52 52.76 +20 35 28.8 q C23
2013-06-25 21:18:32 C 18 52 52.88 +20 35 29.2 q C23
2013-06-25 21:20:16 C 18 52 52.99 +20 35 29.6 q C23
2013-06-26 00:32:43 C 18 53 04.85 +20 36 15.9 q C23
2013-06-26 00:34:27 C 18 53 04.96 +20 36 16.4 q C23
2013-06-26 00:35:37 C 18 53 05.04 +20 36 16.5 q C23
2013-06-26 00:36:46 C 18 53 05.10 +20 36 16.8 q C23
2013-06-26 00:37:56 C 18 53 05.17 +20 36 17.0 q C23
2013-06-26 00:39:40 C 18 53 05.28 +20 36 17.5 q C23
2013-06-26 00:40:49 C 18 53 05.35 +20 36 17.7 q C23
2013-06-26 05:38:05 C 18 53 28.65 +20 37 28.9 r G60
2013-06-26 05:53:39 C 18 53 29.64 +20 37 32.9 r G60
2013-06-28 07:28:00 C 18 56 36.56 +20 44 21.8 u H21
2013-06-28 07:33:51 C 18 56 36.84 +20 44 22.1 u H21
2013-06-28 07:40:07 C 18 56 37.13 +20 44 22.4 u H21
2013-06-28 07:46:24 C 18 56 37.43 +20 44 22.8 u H21
2013-06-28 07:52:41 C 18 56 37.72 +20 44 23.2 u H21
2013-06-28 20:08:15 C 18 57 22.41 +20 45 02.5 o A92
2013-06-28 20:18:09 C 18 57 22.89 +20 45 03.1 o A92
2013-06-28 20:28:01 C 18 57 23.35 +20 45 03.8 o A92
2013-06-28 20:37:52 C 18 57 23.82 +20 45 04.6 o A92
2013-06-28 20:49:10 C 18 57 24.34 +20 45 05.7 o A92
2013-06-28 20:58:19 C 18 57 24.77 +20 45 06.1 o A92
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)