523971 (1999 AJ39)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2771054056 ± 2.00e+00
Semi-major axis (a)1.1581690197 AU ± 3.00e+00
Inclination (i)10.08991315° ± 4.00e+00
Long. of Asc. Node (Ω)298.46199885° ± 5.00e+00
Arg. of Perihelion (ω)1.67717358° ± 6.00e+00
Mean Anomaly (M)13.46938858° ± 2.17e-05
Mean Motion (n)0.7907776035°/day ± 3.07e+00
Perihelion dist (q)0.83723412 AU ± 3.17e+00
Aphelion dist (Q)1.47910392 AU ± 4.48e+00
Orbital Period1.24640136 yr ± 4.84e+00
NGA Modelr2
A23.32324102e-06 AU/d²
Physical Parameters
H (abs. magnitude)21.21
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.302″
Uncertainty0
Orbit TypeApollo
MOID0.163468 AU
Observations Used92
Oppositions5
Arc Total1999-2024
First Observation Used1999-01-15
Last Observation Used2024-12-21
Observations (93)
Date Type RA Dec Mag Band Observatory
2019-10-27 03:30:19 C 21 21 54.85 +64 08 24.0 U I41
2019-10-27 03:33:01 C 21 21 56.03 +64 08 20.5 U I41
2019-10-27 04:09:26 C 21 22 12.16 +64 07 32.5 U I41
2019-10-27 04:12:07 C 21 22 13.35 +64 07 28.8 U I41
2019-11-02 03:35:17 C 22 20 17.04 +60 25 28.9 U I41
2019-11-02 04:13:52 C 22 20 29.57 +60 24 20.7 U I41
2019-11-02 04:45:10 C 22 20 39.83 +60 23 24.7 U I41
2019-11-02 05:08:15 C 22 20 47.36 +60 22 43.1 U I41
2019-11-17 04:14:18 C 23 49 30.53 +49 10 40.4 V G96
2019-11-17 04:30:22 C 23 49 33.20 +49 10 10.7 V G96
2019-11-17 04:38:41 C 23 49 34.58 +49 09 55.5 V G96
2019-11-17 04:47:02 C 23 49 35.97 +49 09 40.0 V G96
2019-11-18 03:59:50 C 23 53 40.46 +48 27 36.8 V G96
2019-11-18 04:07:23 C 23 53 41.68 +48 27 23.0 V G96
2019-11-18 04:14:56 C 23 53 42.89 +48 27 09.4 V G96
2019-11-18 04:22:28 C 23 53 43.97 +48 26 56.1 V G96
2019-11-25 04:20:20 C 00 19 50.97 +43 40 01.7 V G96
2019-11-25 04:30:47 C 00 19 52.34 +43 39 45.0 V G96
2019-11-25 04:38:19 C 00 19 53.33 +43 39 32.5 V G96
2019-11-25 04:45:50 C 00 19 54.31 +43 39 20.4 V G96
2024-02-05 08:01:39 C 10 03 32.285 -00 53 46.79 V G96
2024-02-05 08:09:05 C 10 03 31.547 -00 53 49.09 V G96
2024-02-05 08:16:31 C 10 03 30.748 -00 53 51.94 V G96
2024-02-05 08:23:57 C 10 03 29.956 -00 53 53.66 V G96
2024-02-12 09:51:08 C 09 45 06.744 -01 41 32.80 X F52
2024-02-12 10:09:02 C 09 45 04.566 -01 41 36.79 X F52
2024-02-12 10:26:57 C 09 45 02.420 -01 41 41.11 X F52
2024-02-12 10:44:57 C 09 45 00.253 -01 41 44.97 X F52
2024-03-02 04:02:47 C 08 53 07.206 -02 21 50.22 V G96
2024-03-02 04:10:51 C 08 53 06.346 -02 21 49.82 V G96
2024-03-02 04:18:53 C 08 53 05.478 -02 21 50.00 V G96
2024-03-02 04:26:57 C 08 53 04.607 -02 21 49.28 V G96
2024-11-29 05:48:24 C 01 41 30.412 +47 39 18.68 V V00
2024-11-29 05:59:20 C 01 41 30.750 +47 38 57.23 V V00
2024-11-29 06:07:25 C 01 41 30.995 +47 38 41.50 V V00
2024-11-29 06:15:31 C 01 41 31.247 +47 38 25.58 V V00
2024-12-20 04:32:20 C 02 08 24.137 +35 02 00.13 V G96
2024-12-20 04:39:43 C 02 08 24.504 +35 01 51.02 V G96
2024-12-20 05:11:09 C 02 08 26.354 +35 01 16.28 V G96
2024-12-20 05:18:31 C 02 08 26.790 +35 01 07.75 V G96
2024-12-21 05:30:44 C 02 10 00.494 +34 34 55.53 X F51
2024-12-21 05:47:16 C 02 10 01.451 +34 34 37.93 X F51
2024-12-21 06:03:49 C 02 10 02.408 +34 34 20.47 X F51