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
2013-07-20 05:45:44 C 19 13 07.75 +17 55 56.1 u H21
2013-07-20 05:48:58 C 19 13 07.79 +17 55 54.3 u H21
2013-07-20 05:52:04 C 19 13 07.83 +17 55 52.5 u H21
2013-07-20 05:54:07 C 19 13 07.86 +17 55 51.4 u H21
2013-07-20 05:56:09 C 19 13 07.89 +17 55 50.2 u H21
2013-07-20 05:58:19 C 19 13 07.92 +17 55 49.1 u H21
2013-07-20 21:28:44 C 19 13 27.47 +17 46 51.1 q C23
2013-07-20 21:33:02 C 19 13 27.55 +17 46 48.9 q C23
2013-07-20 21:38:26 C 19 13 27.61 +17 46 45.5 q C23
2013-07-20 22:12:35 C 19 13 28.14 +17 46 25.9 q C23
2013-07-20 22:14:45 C 19 13 28.16 +17 46 25.0 q C23
2013-07-20 22:16:54 C 19 13 28.25 +17 46 23.4 q C23
2013-07-24 21:19:28 C 19 15 23.37 +16 49 26.1 q C23
2013-07-24 21:22:43 C 19 15 23.42 +16 49 24.2 q C23
2013-07-24 21:27:01 C 19 15 23.45 +16 49 21.5 q C23
2013-07-24 21:30:16 C 19 15 23.56 +16 49 18.9 q C23
2013-07-24 21:33:30 C 19 15 23.59 +16 49 17.6 q C23
2013-07-25 01:28:37 C 19 15 27.37 +16 46 50.8 q C23
2013-07-25 01:31:50 C 19 15 27.41 +16 46 49.0 q C23
2013-07-25 01:35:04 C 19 15 27.46 +16 46 46.5 q C23
2013-07-25 21:12:40 C 19 15 52.48 +16 34 31.6 q C23
2013-07-25 21:18:03 C 19 15 52.59 +16 34 28.2 q C23
2013-07-25 21:21:17 C 19 15 52.65 +16 34 26.4 q C23
2013-07-25 21:25:37 C 19 15 52.69 +16 34 23.8 q C23
2013-07-28 23:10:09 C 19 17 23.75 +15 47 11.4 q C23
2013-07-28 23:15:33 C 19 17 23.80 +15 47 06.7 q C23
2013-07-28 23:19:52 C 19 17 23.92 +15 47 03.4 q C23
2013-07-28 23:38:47 C 19 17 24.23 +15 46 51.3 q C23
2013-07-28 23:43:06 C 19 17 24.29 +15 46 48.6 q C23
2013-07-31 22:21:01 C 19 18 56.00 +15 00 12.4 q C23
2013-07-31 22:24:16 C 19 18 56.04 +15 00 09.9 q C23
2013-08-01 00:04:47 C 19 18 57.95 +14 59 02.0 q C23
2013-08-01 00:08:02 C 19 18 58.04 +14 58 59.4 q C23
2013-08-01 00:11:15 C 19 18 58.11 +14 58 58.0 q C23
2013-08-01 00:14:30 C 19 18 58.15 +14 58 56.2 q C23
2013-08-02 00:03:56 C 19 19 30.09 +14 42 57.5 o A32
2013-08-02 00:08:41 C 19 19 30.20 +14 42 54.2 o A32
2013-08-02 00:13:26 C 19 19 30.30 +14 42 50.9 o A32
2013-08-03 22:46:56 C 19 20 35.06 +14 11 27.8 q C23
2013-08-03 22:50:11 C 19 20 35.15 +14 11 25.1 q C23
2013-08-03 22:54:29 C 19 20 35.25 +14 11 22.4 q C23
2013-08-03 22:57:44 C 19 20 35.26 +14 11 20.4 q C23
2013-08-05 00:38:25 C 19 21 11.67 +13 53 56.8 w C35
2013-08-05 00:44:09 C 19 21 11.76 +13 53 52.5 w C35
2013-08-05 00:47:57 C 19 21 11.86 +13 53 50.1 w C35
2013-08-05 00:52:31 C 19 21 11.93 +13 53 46.7 w C35
2013-08-05 01:56:31 C 19 21 14.67 +13 53 03.9 u H21
2013-08-05 02:01:06 C 19 21 14.77 +13 53 01.0 u H21
2013-08-05 02:06:08 C 19 21 14.88 +13 52 57.6 u H21
2013-08-05 02:11:36 C 19 21 14.98 +13 52 53.9 u H21
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)