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
2014-05-21 06:32:12 C 08 42 15.984 +16 05 16.85 L F51
2014-05-21 06:40:09 C 08 42 17.042 +16 05 05.11 L F51
2015-11-08 05:45:14 C 02 59 08.78 +24 03 08.3 u H21
2015-11-08 06:02:45 C 02 59 07.71 +24 03 06.1 u H21
2015-11-08 06:20:44 C 02 59 06.62 +24 03 03.7 u H21
2017-09-24 10:09:33 C 01 00 45.575 +03 32 49.18 L F51
2017-09-24 10:27:44 C 01 00 44.527 +03 32 45.56 L F51
2017-09-24 10:45:58 C 01 00 43.491 +03 32 41.38 L F51
2018-11-07 10:02:01 C 07 07 36.54 +34 12 30.0 u H21
2018-11-07 10:42:14 C 07 07 37.04 +34 12 41.1 u H21
2018-11-08 07:46:58 C 07 07 54.42 +34 18 40.2 u H21
2018-11-08 07:54:00 C 07 07 54.48 +34 18 41.6 u H21
2018-11-08 08:00:26 C 07 07 54.63 +34 18 43.0 u H21
2018-11-17 07:06:06 C 07 09 07.00 +35 25 58.4 u H21
2018-11-17 07:15:10 C 07 09 06.99 +35 26 01.4 u H21
2018-11-17 07:28:55 C 07 09 07.01 +35 26 06.3 u H21
2018-12-09 09:29:11 C 06 55 27.33 +38 49 16.8 V G96
2018-12-09 09:36:51 C 06 55 26.89 +38 49 19.2 V G96
2018-12-09 09:44:27 C 06 55 26.46 +38 49 23.7 V G96
2018-12-09 09:51:59 C 06 55 26.05 +38 49 25.2 V G96
2018-12-15 12:04:39 C 06 46 44.401 +39 46 34.54 U F51
2018-12-15 12:19:07 C 06 46 43.399 +39 46 40.04 U F51
2018-12-15 12:33:34 C 06 46 42.385 +39 46 45.43 U F51
2019-03-04 02:28:33 C 05 14 27.21 +36 37 41.8 V G96
2019-03-04 02:36:11 C 05 14 27.45 +36 37 39.4 V G96
2019-03-04 02:43:49 C 05 14 27.75 +36 37 37.6 V G96
2019-03-04 02:51:28 C 05 14 28.00 +36 37 34.8 V G96
2019-05-25 06:21:36 C 08 35 43.361 +20 12 21.00 U F51
2019-05-25 06:28:25 C 08 35 44.302 +20 12 13.87 U F51
2019-05-25 06:35:14 C 08 35 45.267 +20 12 06.32 U F51
2022-09-24 09:25:46 C 00 43 15.976 +00 41 10.81 U F51
2022-09-24 09:57:48 C 00 43 14.068 +00 41 03.12 U F51
2022-09-24 10:13:44 C 00 43 13.121 +00 40 59.58 U F51
2022-09-26 07:55:57 C 00 40 33.568 +00 30 28.44 V G96
2022-09-26 08:07:06 C 00 40 32.916 +00 30 25.63 V G96
2022-09-26 08:14:34 C 00 40 32.473 +00 30 23.44 V G96
2022-09-26 08:22:04 C 00 40 32.023 +00 30 22.54 V G96
2022-10-02 10:55:47 C 00 32 01.992 -00 02 24.69 U F51
2022-10-02 11:11:59 C 00 32 01.049 -00 02 28.05 U F51
2022-10-02 11:27:54 C 00 32 00.104 -00 02 31.64 U F51
2023-12-18 05:33:35 C 05 51 22.478 +39 22 50.02 V G96
2023-12-18 05:48:40 C 05 51 21.229 +39 22 52.90 V G96
2023-12-18 05:56:13 C 05 51 20.538 +39 22 54.48 V G96
2024-05-08 03:48:36 C 07 17 29.094 +28 01 48.86 V V00
2024-05-08 03:56:44 C 07 17 30.163 +28 01 44.69 V V00
2024-05-08 04:12:52 C 07 17 32.226 +28 01 36.41 V V00
2024-07-01 23:10:52 C 10 27 10.94 +06 51 12.4 X W84
2024-07-01 23:23:15 C 10 27 12.85 +06 50 54.6 X W84
2024-07-01 23:35:44 C 10 27 14.82 +06 50 36.5 X W84
2024-07-01 23:48:57 C 10 27 16.88 +06 50 17.5 X W84
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)