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
2015-12-09 12:40:50 C 05 12 15.140 +20 23 46.09 L F51
2015-12-16 06:43:40 C 05 04 49.41 +20 01 06.1 q G96
2015-12-16 06:51:00 C 05 04 49.10 +20 01 04.7 q G96
2015-12-16 06:58:19 C 05 04 48.77 +20 01 04.8 q G96
2015-12-16 07:05:38 C 05 04 48.40 +20 01 03.3 q G96
2016-01-03 05:42:38 C 04 46 30.18 +19 02 08.6 q G96
2016-01-03 05:49:57 C 04 46 29.92 +19 02 07.0 q G96
2016-01-03 05:57:17 C 04 46 29.61 +19 02 06.1 q G96
2016-01-03 06:04:36 C 04 46 29.36 +19 02 05.3 q G96
2017-06-30 16:23:52 S 00 08 47.29 +17 59 23.1 L C51
2017-06-30 19:32:22 S 00 08 52.70 +18 00 56.8 L C51
2017-06-30 22:40:53 S 00 08 57.99 +18 02 30.9 L C51
2017-06-30 22:41:03 S 00 08 58.08 +18 02 32.6 L C51
2017-07-01 03:23:49 S 00 09 06.04 +18 04 52.7 L C51
2017-07-01 04:58:03 S 00 09 08.73 +18 05 40.0 L C51
2017-07-01 06:32:18 S 00 09 11.27 +18 06 25.8 L C51
2017-07-01 08:06:33 S 00 09 13.87 +18 07 13.3 L C51
2017-07-01 09:40:49 S 00 09 16.54 +18 07 59.4 L C51
2017-07-01 11:15:04 S 00 09 19.15 +18 08 46.2 L C51
2017-07-01 11:15:15 S 00 09 19.08 +18 08 47.3 L C51
2017-07-01 12:49:30 S 00 09 21.75 +18 09 33.8 L C51
2017-07-01 19:06:29 S 00 09 32.13 +18 12 39.0 L C51
2017-07-01 22:15:00 S 00 09 37.14 +18 14 11.6 L C51
2017-07-02 01:23:41 S 00 09 42.26 +18 15 44.9 L C51
2017-08-31 10:24:27 C 23 46 43.82 +22 07 28.6 q G96
2017-08-31 10:30:32 C 23 46 43.50 +22 07 26.8 q G96
2017-08-31 10:36:37 C 23 46 43.18 +22 07 25.2 q G96
2017-08-31 10:42:42 C 23 46 42.86 +22 07 23.7 q G96
2017-09-02 08:58:46 C 23 44 19.488 +21 54 16.96 L F51
2017-09-02 09:15:35 C 23 44 18.580 +21 54 12.15 L F51
2017-09-02 09:32:30 C 23 44 17.673 +21 54 07.17 L F51
2017-09-02 09:49:27 C 23 44 16.755 +21 54 02.13 L F51
2017-09-19 11:41:21 C 23 23 08.139 +19 08 07.16 L F51
2017-09-19 12:20:00 C 23 23 06.219 +19 07 48.04 L F51
2017-09-19 12:39:17 C 23 23 05.273 +19 07 38.58 L F51
2017-09-24 06:19:33 C 23 17 51.18 +18 10 29.1 q G96
2017-09-24 06:28:27 C 23 17 50.78 +18 10 24.4 q G96
2017-09-24 06:37:23 C 23 17 50.38 +18 10 19.8 q G96
2017-09-24 06:46:21 C 23 17 49.97 +18 10 15.1 q G96
2017-09-24 07:02:53 C 23 17 49.24 +18 10 08.8 q 703
2017-09-24 07:10:37 C 23 17 48.85 +18 10 03.6 q 703
2017-09-24 07:30:13 C 23 17 48.02 +18 09 53.6 q 703
2017-10-14 04:24:16 C 23 02 13.00 +14 03 58.8 U G96
2017-10-14 04:31:08 C 23 02 12.84 +14 03 55.4 U G96
2017-10-14 04:42:34 C 23 02 12.58 +14 03 50.0 U G96
2017-10-14 04:49:24 C 23 02 12.45 +14 03 46.7 U G96
2017-10-23 03:58:41 C 22 59 02.84 +12 25 34.7 U G96
2017-10-23 04:06:13 C 22 59 02.78 +12 25 31.4 U G96
2017-10-23 04:16:51 C 22 59 02.68 +12 25 26.8 U G96
2017-10-23 04:27:10 C 22 59 02.55 +12 25 22.8 U 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)