85938 (1999 DJ4)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4845393244 ± 1.42e-08
Semi-major axis (a)1.8524608141 AU ± 1.41e-09
Inclination (i)9.14045106° ± 2.88e-06
Long. of Asc. Node (Ω)19.86565638° ± 1.26e-05
Arg. of Perihelion (ω)197.77528463° ± 1.28e-05
Mean Anomaly (M)198.34536141° ± 3.98e-06
Mean Motion (n)0.3909207572°/day ± 4.46e-10
Perihelion dist (q)0.95487070 AU ± 2.64e-08
Aphelion dist (Q)2.75005093 AU ± 2.65e-08
Orbital Period2.52129432 yr ± 2.88e-09
Physical Parameters
H (abs. magnitude)18.73
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.434″
Uncertainty0
Orbit TypeApollo
MOID0.024471 AU
Observations Used642
Radar Obs Used1
Oppositions3
Arc Total1999-2024
First Observation Used1999-02-24
Last Observation Used2024-07-01
Observations (650)
Date Type RA Dec Mag Band Observatory
1999-02-24 08:33:10 C 14 24 34.85 +20 03 37.2 17.6 a 704
1999-02-24 08:48:02 C 14 24 39.04 +20 03 15.7 17.4 a 704
1999-02-24 09:02:53 C 14 24 43.14 +20 02 53.3 17.8 a 704
1999-02-24 09:17:45 C 14 24 47.26 +20 02 32.1 17.6 a 704
1999-02-24 09:32:39 C 14 24 51.37 +20 02 09.6 17.8 a 704
1999-02-25 00:41:37 C 14 29 15.79 +19 38 31.4 046
1999-02-25 00:43:05 C 14 29 16.24 +19 38 27.8 046
1999-02-25 00:44:19 C 14 29 16.61 +19 38 26.1 046
1999-02-25 00:45:32 C 14 29 16.96 +19 38 24.2 046
1999-02-25 01:59:34 C 14 29 38.02 +19 36 28.6 118
1999-02-25 02:06:01 C 14 29 39.85 +19 36 18.3 118
1999-02-25 02:09:04 C 14 29 40.70 +19 36 13.6 118
1999-02-25 07:21:12 C 14 31 14.03 +19 28 02.8 c 758
1999-02-25 07:23:48 C 14 31 14.80 +19 27 59.2 c 758
1999-02-25 07:26:17 C 14 31 15.39 +19 27 55.4 c 758
1999-02-25 07:28:43 C 14 31 16.14 +19 27 51.0 c 758
1999-02-25 07:31:18 C 14 31 16.97 +19 27 46.4 c 758
1999-02-25 08:54:21 C 14 31 41.71 +19 25 26.8 17.2 a 704
1999-02-25 08:56:17 C 14 31 42.18 +19 25 23.6 17.3 a 704
1999-02-25 08:58:18 C 14 31 42.87 +19 25 21.0 17.0 a 704
1999-02-25 09:00:18 C 14 31 43.41 +19 25 17.4 a 704
1999-02-25 09:02:18 C 14 31 44.04 +19 25 14.1 17.7 a 704
1999-02-25 09:04:18 C 14 31 44.64 +19 25 12.2 a 704
1999-02-25 09:06:19 C 14 31 45.14 +19 25 07.7 a 704
1999-02-25 09:08:19 C 14 31 45.73 +19 25 03.7 17.4 a 704
1999-02-25 09:10:19 C 14 31 46.31 +19 25 02.3 17.4 a 704
1999-02-25 09:12:19 C 14 31 46.93 +19 24 58.1 a 704
1999-02-25 09:14:20 C 14 31 47.49 +19 24 54.5 17.4 a 704
1999-02-25 09:16:20 C 14 31 48.11 +19 24 53.1 a 704
1999-02-25 09:18:17 C 14 31 48.53 +19 24 47.5 a 704
1999-02-25 09:20:17 C 14 31 49.16 +19 24 42.4 a 704
1999-02-25 09:22:17 C 14 31 49.82 +19 24 41.3 a 704
1999-02-25 09:34:24 C 14 31 52.06 +19 24 28.2 c 758
1999-02-25 09:36:57 C 14 31 52.79 +19 24 24.7 c 758
1999-02-25 09:39:29 C 14 31 53.62 +19 24 19.6 c 758
1999-02-25 09:42:26 C 14 31 54.41 +19 24 14.9 c 758
1999-02-25 09:44:58 C 14 31 55.07 +19 24 11.9 c 758
1999-02-25 16:45:14 C 14 34 02.49 +19 12 25.2 z 900
1999-02-25 17:06:28 C 14 34 08.70 +19 11 49.6 z 900
1999-02-25 22:01:56 C 14 35 38.80 +19 03 12.5 z 587
1999-02-25 22:04:23 C 14 35 39.60 +19 03 10.0 z 587
1999-02-25 22:12:54 C 14 35 42.14 +19 02 55.6 z 587
1999-02-25 22:46:10 C 14 35 51.94 +19 01 59.6 118
1999-02-25 22:48:07 C 14 35 52.51 +19 01 56.3 118
1999-02-25 22:51:31 C 14 35 53.55 +19 01 50.3 118
1999-02-25 22:58:40 C 14 35 55.71 +19 01 38.1 118
1999-02-25 23:29:40 C 14 36 05.10 +19 00 47.9 z 108
1999-02-25 23:32:20 C 14 36 06.18 +19 00 41.1 z 108
1999-02-25 23:35:50 C 14 36 06.94 +19 00 38.6 z 108
1999-02-25 23:46:06 C 14 36 10.12 +19 00 20.8 z 108
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2004-04-14 19:24:00 65761431.4 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)