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
2004-02-15 06:14:10 C 09 41 35.82 +47 53 19.5 r 750
2004-02-16 23:06:07 C 09 38 03.31 +48 24 15.2 o A16
2004-02-16 23:09:15 C 09 38 03.26 +48 24 17.8 o A16
2004-02-16 23:12:22 C 09 38 03.00 +48 24 20.0 o A16
2004-02-16 23:15:30 C 09 38 02.63 +48 24 22.8 o A16
2004-02-16 23:20:43 C 09 38 02.01 +48 24 26.1 o A16
2004-02-16 23:23:51 C 09 38 01.84 +48 24 28.5 o A16
2004-02-19 05:58:49 C 09 32 53.79 +49 03 28.6 d H72
2004-02-19 06:01:17 C 09 32 53.56 +49 03 31.3 17.8 d H72
2004-02-19 06:04:52 C 09 32 53.31 +49 03 32.6 17.8 d H72
2004-02-19 06:08:24 C 09 32 52.77 +49 03 35.9 18.2 d H72
2004-02-19 06:11:58 C 09 32 52.40 +49 03 38.4 18.2 d H72
2004-02-20 18:19:32 C 09 29 17.25 +49 27 18.8 c 151
2004-02-20 18:23:33 C 09 29 16.80 +49 27 21.7 c 151
2004-02-20 18:24:50 C 09 29 16.69 +49 27 22.6 c 151
2004-02-20 18:25:37 C 09 29 16.61 +49 27 23.0 c 151
2004-02-20 20:05:00 C 09 29 05.59 +49 28 31.9 d 557
2004-02-20 20:33:43 C 09 29 02.41 +49 28 51.2 d 557
2004-02-20 20:34:30 C 09 29 02.49 +49 28 50.8 c 127
2004-02-20 20:43:24 C 09 29 01.57 +49 28 57.0 c 127
2004-02-20 20:50:08 C 09 29 00.81 +49 29 01.6 c 127
2004-02-20 20:55:45 C 09 29 00.20 +49 29 05.7 c 127
2004-02-20 21:06:36 C 09 28 58.76 +49 29 13.2 d 557
2004-02-20 21:27:44 C 09 28 56.38 +49 29 27.9 c 046
2004-02-20 21:28:56 C 09 28 56.26 +49 29 28.5 c 046
2004-02-20 21:30:10 C 09 28 56.09 +49 29 29.1 c 046
2004-02-20 21:31:06 C 09 28 56.29 +49 29 29.4 o 198
2004-02-20 21:31:45 C 09 28 55.94 +49 29 30.1 c 046
2004-02-20 21:33:04 C 09 28 55.77 +49 29 31.3 c 046
2004-02-20 21:34:17 C 09 28 55.69 +49 29 31.8 c 046
2004-02-20 21:35:27 C 09 28 55.56 +49 29 33.1 c 046
2004-02-20 21:38:32 C 09 28 55.19 +49 29 34.0 d 557
2004-02-20 21:44:35 C 09 28 54.75 +49 29 38.3 o 198
2004-02-20 21:58:05 C 09 28 53.19 +49 29 47.5 o 198
2004-02-20 22:07:14 C 09 28 51.96 +49 29 52.7 d 557
2004-02-20 22:35:56 C 09 28 48.71 +49 30 11.1 d 557
2004-02-20 23:08:57 C 09 28 45.01 +49 30 31.9 d 557
2004-02-20 23:40:50 C 09 28 41.45 +49 30 51.6 d 557
2004-02-21 00:06:22 C 09 28 38.58 +49 31 07.2 d 557
2004-02-21 00:38:17 C 09 28 35.02 +49 31 26.6 d 557
2004-02-21 01:11:19 C 09 28 31.32 +49 31 46.2 d 557
2004-02-21 01:43:14 C 09 28 27.83 +49 32 05.0 d 557
2004-02-21 02:08:45 C 09 28 25.04 +49 32 20.0 d 557
2004-02-21 03:24:50 C 09 28 16.78 +49 33 03.5 d 557
2004-02-22 21:58:59 C 09 23 44.80 +49 58 49.7 16.7 A70
2004-02-22 22:07:01 C 09 23 43.88 +49 58 53.4 16.5 A70
2004-02-22 22:18:00 C 09 23 42.56 +49 59 00.1 16.7 A70
2004-02-22 22:45:00 C 09 23 39.40 +49 59 16.4 16.5 A70
2004-02-23 19:01:25 C 09 21 26.20 +50 10 37.1 c J92
2004-02-23 19:04:28 C 09 21 25.79 +50 10 38.8 c J92
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)