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
2017-11-16 02:41:11 C 23 01 31.67 +09 20 44.2 U G96
2017-11-16 02:49:24 C 23 01 31.80 +09 20 42.4 U G96
2017-11-16 03:00:20 C 23 01 31.98 +09 20 40.3 U G96
2017-11-16 03:34:53 C 23 01 32.47 +09 20 32.6 U G96
2019-12-20 06:33:35 C 05 57 36.63 +17 18 15.9 V G96
2019-12-20 06:41:51 C 05 57 36.19 +17 18 15.0 V G96
2019-12-20 06:58:23 C 05 57 35.38 +17 18 13.5 V G96
2020-01-27 01:30:32 C 05 18 25.89 +15 57 02.0 u H21
2020-01-27 01:37:33 C 05 18 25.68 +15 57 01.7 u H21
2020-01-27 01:43:07 C 05 18 25.52 +15 57 01.3 u H21
2020-01-27 01:45:10 C 05 18 25.46 +15 57 01.1 u H21
2020-01-27 01:47:30 C 05 18 25.40 +15 57 01.2 u H21
2021-07-11 14:00:44 C 01 17 50.782 +21 47 20.25 U F51
2021-07-11 14:19:25 C 01 17 51.273 +21 47 25.62 U F51
2021-07-11 14:28:46 C 01 17 51.521 +21 47 28.58 U F51
2021-09-06 10:48:40 C 01 13 53.14 +24 44 26.8 V G96
2021-09-06 10:56:56 C 01 13 52.83 +24 44 25.7 V G96
2021-09-06 11:07:14 C 01 13 52.47 +24 44 24.4 V G96
2021-09-06 11:19:21 C 01 13 52.06 +24 44 23.1 V G96
2021-09-10 09:57:13 C 01 10 26.278 +24 32 41.10 U F52
2021-09-10 10:15:40 C 01 10 25.562 +24 32 38.62 U F52
2021-09-10 10:34:06 C 01 10 24.839 +24 32 36.05 U F52
2021-09-10 10:52:33 C 01 10 24.122 +24 32 33.44 U F52
2021-09-18 05:49:41 C 01 02 46.40 +23 57 58.8 V G96
2021-09-18 05:57:19 C 01 02 46.11 +23 57 56.4 V G96
2021-09-18 06:04:57 C 01 02 45.77 +23 57 55.0 V G96
2021-09-18 06:12:34 C 01 02 45.42 +23 57 53.5 V G96
2021-09-28 08:00:59 C 00 51 51.063 +22 52 02.05 U F52
2021-09-28 08:19:20 C 00 51 50.197 +22 51 56.38 U F52
2021-09-28 08:56:00 C 00 51 48.459 +22 51 44.95 U F52
2021-09-29 07:11:18 C 00 50 46.785 +22 44 35.40 U F51
2021-09-29 07:27:53 C 00 50 45.992 +22 44 30.10 U F51
2021-09-29 07:44:27 C 00 50 45.214 +22 44 24.81 U F51
2021-10-03 07:35:30 C 00 46 19.371 +22 11 47.44 U F52
2021-10-03 07:51:03 C 00 46 18.637 +22 11 41.92 U F52
2021-10-03 08:06:31 C 00 46 17.907 +22 11 36.46 U F52
2021-10-03 08:22:04 C 00 46 17.184 +22 11 30.93 U F52
2021-10-05 07:31:32 C 00 44 07.551 +21 54 28.26 U F52
2021-10-05 07:48:06 C 00 44 06.769 +21 54 22.27 U F52
2021-10-05 08:04:43 C 00 44 05.997 +21 54 16.17 U F52
2021-10-13 06:27:17 C 00 35 42.020 +20 40 24.19 U F51
2021-10-13 06:46:52 C 00 35 41.163 +20 40 16.27 U F51
2021-10-13 07:06:23 C 00 35 40.303 +20 40 08.44 U F51
2021-10-13 07:26:00 C 00 35 39.449 +20 40 00.73 U F51
2021-10-16 07:50:14 C 00 32 40.05 +20 10 26.2 V G96
2021-10-16 07:58:29 C 00 32 39.74 +20 10 23.1 V G96
2021-10-16 08:06:43 C 00 32 39.39 +20 10 20.1 V G96
2021-10-26 04:22:16 C 00 24 03.36 +18 32 24.8 V G96
2021-10-26 04:29:46 C 00 24 03.11 +18 32 21.5 V G96
2021-10-26 04:37:14 C 00 24 02.83 +18 32 18.7 V G96
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)