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
2013-06-04 22:50:13 n 16 33 56.34 -01 40 15.4 q Z92
2013-06-04 22:50:31 n 16 33 56.58 -01 40 12.5 q Z92
2013-06-04 22:50:47 n 16 33 56.79 -01 40 09.9 q Z92
2013-06-04 22:51:01 n 16 33 56.98 -01 40 07.6 q Z92
2013-06-04 22:59:58 n 16 34 04.19 -01 38 41.3 q Z92
2013-06-04 23:00:13 n 16 34 04.39 -01 38 38.9 q Z92
2013-06-04 23:00:30 n 16 34 04.62 -01 38 36.2 q Z92
2013-06-04 23:00:46 n 16 34 04.83 -01 38 33.7 q Z92
2013-06-04 23:01:00 n 16 34 05.03 -01 38 31.4 q Z92
2013-06-04 23:57:08 C 16 34 48.61 -01 29 23.7 t B50
2013-06-04 23:58:51 C 16 34 49.99 -01 29 07.2 t B50
2013-06-05 00:02:19 C 16 34 52.74 -01 28 34.5 t B50
2013-06-05 00:09:08 C 16 34 58.17 -01 27 29.2 t B50
2013-06-05 00:10:52 C 16 34 59.55 -01 27 12.6 t B50
2013-06-05 00:20:28 C 16 35 07.18 -01 25 40.9 t B50
2013-06-05 00:22:11 C 16 35 08.55 -01 25 24.5 t B50
2013-06-05 00:47:51 C 16 35 28.99 -01 21 20.5 t B50
2013-06-05 02:02:54 C 16 36 29.23 -01 09 33.5 q C23
2013-06-05 02:05:47 C 16 36 31.51 -01 09 06.2 q C23
2013-06-05 02:08:06 C 16 36 33.34 -01 08 44.5 q C23
2013-06-05 02:10:59 C 16 36 35.66 -01 08 17.1 q C23
2013-06-05 02:13:53 C 16 36 37.96 -01 07 49.9 q C23
2013-06-05 19:54:11 C 16 50 31.36 +01 29 53.7 o A92
2013-06-05 20:03:46 C 16 50 38.12 +01 31 14.0 o A92
2013-06-05 20:12:26 C 16 50 44.20 +01 32 26.7 o A92
2013-06-05 20:22:00 C 16 50 50.92 +01 33 46.2 o A92
2013-06-05 20:39:16 C 16 51 02.81 +01 36 11.9 o A92
2013-06-05 20:56:19 C 16 51 14.83 +01 38 34.4 o A92
2013-06-05 21:01:02 C 16 51 20.33 +01 39 07.8 q A13
2013-06-05 21:04:29 C 16 51 21.69 +01 39 27.7 o 639
2013-06-05 21:04:54 C 16 51 23.04 +01 39 40.0 q A13
2013-06-05 21:08:12 C 16 51 25.35 +01 40 07.7 q A13
2013-06-05 21:08:29 C 16 51 24.48 +01 40 01.6 o 639
2013-06-05 21:12:29 C 16 51 28.35 +01 40 43.5 q A13
2013-06-05 21:12:50 C 16 51 27.51 +01 40 37.8 o 639
2013-06-05 21:17:59 C 16 51 31.13 +01 41 20.5 o 639
2013-06-05 21:22:00 C 16 51 33.92 +01 41 54.1 o 639
2013-06-05 21:42:23 C 16 51 49.18 +01 44 52.4 q A13
2013-06-05 21:47:32 C 16 51 52.75 +01 45 35.2 q A13
2013-06-05 22:08:17 C 16 52 07.13 +01 48 18.0 q C23
2013-06-05 22:12:25 C 16 52 10.00 +01 48 52.2 q C23
2013-06-05 22:15:42 C 16 52 12.28 +01 49 19.4 q C23
2013-06-05 22:18:59 C 16 52 14.56 +01 49 46.6 q C23
2013-06-05 23:04:12 C 16 52 45.14 +01 55 58.5 q A27
2013-06-05 23:10:07 C 16 52 49.22 +01 56 47.2 q A27
2013-06-05 23:22:20 C 16 52 57.63 +01 58 27.6 q A27
2013-06-05 23:32:16 C 16 53 04.45 +01 59 49.1 q A27
2013-06-05 23:37:59 C 16 53 08.49 +02 00 30.9 o A32
2013-06-05 23:40:36 C 16 53 10.81 +02 00 58.8 q C23
2013-06-05 23:43:10 C 16 53 11.93 +02 01 13.6 o A32
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)