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
2021-10-26 04:44:41 C 00 24 02.57 +18 32 15.5 V G96
2021-10-27 06:37:46 C 00 23 13.452 +18 21 38.37 U F52
2021-10-27 06:53:20 C 00 23 12.949 +18 21 31.95 U F52
2021-10-27 07:08:53 C 00 23 12.438 +18 21 25.73 U F52
2021-11-01 10:35:53 C 00 19 39.761 +17 31 41.50 U F51
2021-11-01 10:53:33 C 00 19 39.279 +17 31 34.55 U F51
2021-11-01 11:11:11 C 00 19 38.813 +17 31 27.50 U F51
2021-11-01 11:28:51 C 00 19 38.334 +17 31 20.27 U F51
2023-11-20 12:11:39 C 07 33 30.640 +14 02 50.13 X F51
2023-11-20 12:28:23 C 07 33 30.475 +14 02 46.70 X F51
2023-11-20 13:02:09 C 07 33 30.151 +14 02 40.01 X F51
2023-12-17 08:16:02 C 07 17 26.149 +12 09 01.58 V G96
2023-12-17 08:23:25 C 07 17 25.840 +12 09 00.61 V G96
2023-12-17 08:30:48 C 07 17 25.516 +12 08 59.32 V G96
2023-12-17 08:38:11 C 07 17 25.202 +12 08 58.49 V G96
2025-10-13 04:58:22 C 01 43 21.49 +23 46 38.7 V H21
2025-10-13 05:23:27 C 01 43 20.41 +23 46 31.8 V H21
2025-10-27 05:17:56 C 01 29 09.208 +22 02 23.06 V G96
2025-10-27 05:25:22 C 01 29 08.912 +22 02 20.69 V G96
2025-10-27 05:32:47 C 01 29 08.646 +22 02 17.12 V G96
2025-10-27 05:40:13 C 01 29 08.290 +22 02 15.18 V G96
2025-11-23 05:23:08 C 01 08 53.852 +18 27 31.41 X F52
2025-11-23 05:38:00 C 01 08 53.559 +18 27 26.76 X F52
2025-11-23 05:52:54 C 01 08 53.227 +18 27 22.63 X F52
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)