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
2009-01-20 07:06:09 C 08 04 58.40 +44 57 59.2 r 703
2009-01-20 07:13:08 C 08 04 57.72 +44 58 02.7 r 703
2009-01-20 07:13:56 C 08 04 57.72 +44 58 03.1 r 703
2009-01-20 07:20:59 C 08 04 57.07 +44 58 08.0 r 703
2009-01-20 07:21:51 C 08 04 56.89 +44 58 08.2 r 703
2009-01-20 07:28:52 C 08 04 56.20 +44 58 11.2 r 703
2009-01-20 07:29:48 C 08 04 56.10 +44 58 11.5 r 703
2009-01-30 04:00:21 C 07 39 48.13 +46 30 24.1 r 703
2009-01-30 04:09:14 C 07 39 47.05 +46 30 27.6 r 703
2009-01-30 04:18:06 C 07 39 46.08 +46 30 29.9 r 703
2009-01-30 04:26:49 C 07 39 45.10 +46 30 33.3 r 703
2009-02-03 05:10:30 C 07 28 51.36 +46 48 21.0 18.9 c 704
2009-02-03 05:28:10 C 07 28 49.28 +46 48 23.1 19.5 c 704
2009-02-03 05:46:31 C 07 28 47.12 +46 48 25.4 19.5 c 704
2009-02-03 06:03:55 C 07 28 45.12 +46 48 27.6 19.3 c 704
2009-02-03 06:21:36 C 07 28 42.99 +46 48 29.2 19.9 c 704
2009-04-19 03:14:47 C 07 20 25.36 +27 23 09.1 19.5 c 704
2009-04-19 03:30:34 C 07 20 26.63 +27 22 48.5 19.8 c 704
2009-04-19 03:45:50 C 07 20 27.74 +27 22 27.1 19.8 c 704
2009-04-19 04:01:43 C 07 20 28.99 +27 22 05.9 19.3 c 704
2009-04-21 03:08:34 C 07 24 20.33 +26 18 18.2 19.4 c 704
2009-04-21 03:23:55 C 07 24 21.48 +26 17 56.2 19.9 c 704
2009-04-21 03:39:16 C 07 24 22.67 +26 17 33.7 20.1 c 704
2009-04-21 03:54:44 C 07 24 23.95 +26 17 12.6 19.8 c 704
2009-04-21 04:11:12 C 07 24 25.15 +26 16 48.7 19.5 c 704
2009-06-13 08:17:27 C 09 57 54.22 -40 22 01.4 r 432
2009-06-13 08:39:07 C 09 57 59.40 -40 23 42.9 r 432
2009-06-13 09:00:52 C 09 58 04.44 -40 25 25.9 r 432
2009-06-16 08:24:56 C 10 17 37.16 -45 59 24.9 r 432
2009-06-16 08:56:34 C 10 17 46.37 -46 01 44.5 r 432
2010-11-07 11:20:31 C 03 16 24.46 +25 44 30.8 L F51
2010-11-07 12:03:51 C 03 16 21.82 +25 44 26.5 L F51
2010-11-07 12:23:09 C 03 16 20.65 +25 44 24.0 L F51
2013-11-03 10:12:12 C 07 37 04.17 +32 56 21.8 u H21
2013-11-03 10:30:19 C 07 37 04.79 +32 56 25.7 u H21
2013-11-03 10:48:27 C 07 37 05.47 +32 56 29.5 u H21
2013-11-07 09:34:29 C 07 40 25.42 +33 17 43.1 u H21
2013-11-07 09:47:30 C 07 40 25.88 +33 17 46.4 u H21
2013-11-07 10:01:37 C 07 40 26.40 +33 17 50.3 u H21
2013-11-10 10:04:19 C 07 42 41.75 +33 35 31.9 u H21
2013-11-10 10:26:37 C 07 42 42.32 +33 35 37.7 u H21
2013-11-10 10:48:23 C 07 42 42.91 +33 35 43.0 u H21
2014-01-04 10:03:31 C 07 11 50.771 +42 47 55.19 L F51
2014-01-04 10:22:28 C 07 11 48.971 +42 48 02.64 L F51
2014-01-04 10:41:26 C 07 11 47.179 +42 48 10.10 L F51
2014-01-04 11:00:21 C 07 11 45.387 +42 48 17.41 L F51
2014-01-21 09:00:11 C 06 31 02.206 +44 16 03.71 L F51
2014-01-21 09:18:15 C 06 31 00.282 +44 16 03.95 L F51
2014-05-21 06:16:16 C 08 42 13.854 +16 05 40.42 L F51
2014-05-21 06:24:12 C 08 42 14.915 +16 05 28.62 L F51
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)