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
2008-12-30 06:38:30 C 07 47 34.78 +07 28 02.0 r 448
2008-12-30 07:04:16 C 07 47 33.53 +07 27 58.8 r 448
2008-12-30 07:24:43 C 07 47 32.48 +07 27 54.3 r 448
2009-02-09 02:51:50 C 06 53 08.48 +06 34 51.2 o H55
2009-02-09 02:56:51 C 06 53 08.24 +06 34 50.0 o H55
2009-02-09 03:01:51 C 06 53 07.95 +06 34 48.9 o H55
2009-02-17 05:20:04 C 06 45 14.90 +06 49 37.6 o H55
2009-02-17 05:24:07 C 06 45 14.74 +06 49 38.1 o H55
2009-02-17 05:28:07 C 06 45 14.57 +06 49 38.6 o H55
2009-02-19 10:38:23 C 06 43 29.797 +06 54 43.14 568
2009-02-19 10:46:03 C 06 43 29.544 +06 54 43.97 568
2012-12-03 08:07:22 C 09 55 35.46 -01 04 37.2 u 807
2012-12-03 08:14:35 C 09 55 35.77 -01 04 41.7 u 807
2012-12-03 08:18:21 C 09 55 35.94 -01 04 43.7 u 807
2012-12-03 08:29:20 C 09 55 36.37 -01 04 50.8 u 807
2012-12-05 08:05:54 C 09 57 36.45 -01 34 57.0 u 807
2012-12-05 08:11:42 C 09 57 36.71 -01 35 00.3 u 807
2012-12-05 08:17:28 C 09 57 36.94 -01 35 04.4 u 807
2012-12-05 08:23:15 C 09 57 37.17 -01 35 08.3 u 807
2012-12-05 08:29:02 C 09 57 37.42 -01 35 12.1 u 807
2012-12-12 08:04:15 C 10 04 15.96 -03 24 45.0 u 807
2012-12-12 08:10:03 C 10 04 16.17 -03 24 48.8 u 807
2012-12-12 08:15:50 C 10 04 16.37 -03 24 52.8 u 807
2012-12-12 08:21:36 C 10 04 16.58 -03 24 56.7 u 807
2012-12-12 08:27:23 C 10 04 16.79 -03 25 00.5 u 807
2013-01-10 08:16:49 C 10 22 52.87 -12 03 54.3 u 807
2013-01-10 08:22:38 C 10 22 52.94 -12 03 59.0 u 807
2013-01-10 08:28:26 C 10 22 53.00 -12 04 03.8 u 807
2013-01-10 08:34:11 C 10 22 53.06 -12 04 08.6 u 807
2013-01-10 08:39:58 C 10 22 53.14 -12 04 13.0 u 807
2013-01-12 10:15:55 C 10 23 28.68 -12 45 22.9 r 703
2013-01-12 10:26:28 C 10 23 28.78 -12 45 31.9 r 703
2013-01-12 10:37:06 C 10 23 28.93 -12 45 41.2 r 703
2013-01-12 10:47:49 C 10 23 28.96 -12 45 49.7 r 703
2013-01-15 11:59:37 C 10 24 07.43 -13 47 18.5 t 290
2013-01-15 12:02:36 C 10 24 07.44 -13 47 21.2 t 290
2013-01-15 12:05:36 C 10 24 07.46 -13 47 23.8 t 290
2013-01-16 03:41:39 C 10 24 14.22 -14 00 28.0 t W85
2013-01-16 03:47:06 C 10 24 14.24 -14 00 32.7 t W85
2013-01-16 03:52:33 C 10 24 14.27 -14 00 37.4 t W85
2013-01-16 03:57:59 C 10 24 14.29 -14 00 42.0 t W85
2013-01-16 04:03:26 C 10 24 14.31 -14 00 46.6 t W85
2013-01-16 04:08:53 C 10 24 14.34 -14 00 51.4 t W85
2013-01-16 04:14:19 C 10 24 14.37 -14 00 56.0 t W85
2013-01-16 04:19:46 C 10 24 14.39 -14 01 00.8 t W85
2013-01-16 04:25:13 C 10 24 14.41 -14 01 05.4 t W85
2013-01-16 04:30:40 C 10 24 14.43 -14 01 10.1 t W85
2013-01-16 04:36:06 C 10 24 14.46 -14 01 14.6 t W85
2013-01-16 04:41:33 C 10 24 14.48 -14 01 19.3 t W85
2013-01-16 04:47:00 C 10 24 14.51 -14 01 24.0 t W85
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)