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
2013-06-28 21:10:40 C 18 57 25.35 +20 45 06.9 o A92
2013-06-28 23:16:21 C 18 57 32.03 +20 45 15.0 r 006
2013-06-28 23:26:23 C 18 57 32.49 +20 45 15.4 r 006
2013-06-28 23:36:25 C 18 57 32.92 +20 45 16.0 r 006
2013-06-29 04:44:19 C 18 57 50.65 +20 45 29.4 q H45
2013-06-29 04:49:51 C 18 57 50.90 +20 45 29.9 q H45
2013-06-29 04:51:14 C 18 57 50.98 +20 45 30.0 q H45
2013-06-29 04:53:07 C 18 57 51.06 +20 45 30.1 q H45
2013-06-29 04:55:16 C 18 57 51.14 +20 45 30.3 q H45
2013-06-29 05:10:52 C 18 57 51.82 +20 45 31.1 q H45
2013-06-29 12:36:44 C 18 58 13.303 +20 45 50.65 L F51
2013-06-29 12:51:28 C 18 58 13.903 +20 45 50.34 L F51
2013-06-29 13:06:59 C 18 58 14.539 +20 45 49.94 L F51
2013-06-29 22:03:59 C 18 58 45.29 +20 45 32.6 i C91
2013-06-29 22:07:59 C 18 58 45.46 +20 45 32.7 i C91
2013-06-29 22:12:59 C 18 58 45.66 +20 45 32.8 i C91
2013-06-29 22:16:59 C 18 58 45.83 +20 45 32.7 i C91
2013-06-29 23:18:03 C 18 58 48.51 +20 45 27.6 q C23
2013-06-29 23:19:47 C 18 58 48.58 +20 45 27.5 q C23
2013-06-29 23:21:31 C 18 58 48.66 +20 45 27.6 q C23
2013-06-29 23:23:15 C 18 58 48.73 +20 45 27.5 q C23
2013-06-29 23:27:18 C 18 58 48.90 +20 45 27.5 q C23
2013-06-29 23:58:31 C 18 58 50.23 +20 45 27.5 q C23
2013-06-30 00:00:15 C 18 58 50.30 +20 45 27.4 q C23
2013-06-30 00:01:24 C 18 58 50.34 +20 45 27.4 q C23
2013-06-30 21:11:27 C 18 59 54.32 +20 44 40.4 q C23
2013-06-30 21:13:12 C 18 59 54.39 +20 44 40.6 q C23
2013-06-30 21:14:55 C 18 59 54.47 +20 44 40.5 q C23
2013-06-30 21:16:40 C 18 59 54.53 +20 44 40.6 q C23
2013-06-30 21:20:43 C 18 59 54.69 +20 44 40.5 q C23
2013-06-30 21:46:37 C 18 59 55.79 +20 44 40.0 q K20
2013-06-30 22:01:22 C 18 59 56.38 +20 44 39.7 q K20
2013-06-30 22:16:47 C 18 59 56.97 +20 44 39.2 q K20
2013-06-30 22:27:20 C 18 59 57.36 +20 44 38.0 q C23
2013-06-30 22:28:29 C 18 59 57.41 +20 44 38.0 q C23
2013-06-30 22:29:38 C 18 59 57.45 +20 44 37.9 q C23
2013-06-30 22:31:57 C 18 59 57.59 +20 44 37.9 q C23
2013-06-30 22:33:06 C 18 59 57.60 +20 44 37.6 q C23
2013-06-30 22:46:13 C 18 59 58.12 +20 44 38.2 q K20
2013-06-30 22:49:47 C 18 59 58.26 +20 44 38.0 q K20
2013-07-01 06:41:31 C 19 00 19.73 +20 44 15.4 q H36
2013-07-01 06:46:20 C 19 00 19.90 +20 44 14.9 q H36
2013-07-01 06:51:07 C 19 00 20.07 +20 44 14.6 q H36
2013-07-01 08:02:28 C 19 00 22.44 +20 44 11.0 q H45
2013-07-01 08:07:11 C 19 00 22.61 +20 44 10.6 q H45
2013-07-01 08:14:05 C 19 00 22.86 +20 44 09.9 q H45
2013-07-01 08:15:56 C 19 00 22.93 +20 44 09.8 q H45
2013-07-01 08:20:31 C 19 00 23.09 +20 44 09.3 q H45
2013-07-01 08:23:03 C 19 00 23.17 +20 44 09.0 q H45
2013-07-01 23:30:59 C 19 01 05.19 +20 42 41.3 i C91
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)