2021 SZ4

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8073696480 ± 8.12e-08
Semi-major axis (a)1.5428054578 AU ± 2.57e-08
Inclination (i)26.40208249° ± 1.25e-05
Long. of Asc. Node (Ω)28.37777054° ± 1.42e-06
Arg. of Perihelion (ω)129.58711691° ± 1.29e-05
Mean Anomaly (M)6.55295093° ± 1.05e-05
Mean Motion (n)0.5143343459°/day ± 1.29e-08
Perihelion dist (q)0.29719116 AU ± 1.25e-07
Aphelion dist (Q)2.78841976 AU ± 1.34e-07
Orbital Period1.91631434 yr ± 4.79e-08
Physical Parameters
H (abs. magnitude)20.47
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.257″
Uncertainty0
Orbit TypeApollo
MOID0.035124 AU
Observations Used214
Oppositions2
Arc Total2019-2023
First Observation Used2019-10-15
Last Observation Used2023-10-25
Observations (222)
Date Type RA Dec Mag Band Observatory
2023-10-21 18:50:53 C 03 10 22.870 +25 58 45.63 V O85
2023-10-21 18:54:13 C 03 10 21.785 +25 59 24.73 V O85
2023-10-21 18:57:32 C 03 10 20.733 +26 00 03.53 V O85
2023-10-21 19:00:52 C 03 10 19.650 +26 00 42.12 V O85
2023-10-21 22:12:52 C 03 09 26.796 +26 38 34.37 V Z80
2023-10-21 22:19:11 C 03 09 24.763 +26 39 53.10 V Z80
2023-10-21 22:24:17 C 03 09 23.083 +26 40 56.14 V Z80
2023-10-21 23:20:26 C 03 09 01.30 +26 52 54.9 X L51
2023-10-21 23:21:56 C 03 09 00.79 +26 53 13.5 X L51
2023-10-21 23:23:33 C 03 09 00.23 +26 53 33.8 X L51
2023-10-22 06:28:23 C 03 06 38.495 +28 27 56.20 V 703
2023-10-22 06:35:19 C 03 06 35.759 +28 29 34.04 V 703
2023-10-22 06:42:16 C 03 06 32.969 +28 31 12.79 V 703
2023-10-22 06:49:13 C 03 06 30.179 +28 32 51.68 V 703
2023-10-22 09:30:48 C 03 05 29.219 +29 12 08.08 X F51
2023-10-22 09:46:34 C 03 05 22.450 +29 16 04.12 X F51
2023-10-22 10:02:23 C 03 05 15.616 +29 20 00.97 X F51
2023-10-22 10:18:10 C 03 05 08.688 +29 24 00.19 X F51
2023-10-22 10:28:10 C 03 05 04.370 +29 26 28.00 V T05
2023-10-22 10:30:46 C 03 05 03.230 +29 27 07.27 V T05
2023-10-22 10:37:19 C 03 05 00.341 +29 28 46.45 V T05
2023-10-22 10:47:20 C 03 04 55.915 +29 31 17.94 V T05
2023-10-22 20:05:53 C 03 00 46.37 +32 02 15.8 M32
2023-10-22 20:06:40 C 03 00 45.96 +32 02 29.7 M32
2023-10-22 20:07:26 C 03 00 45.56 +32 02 43.5 M32
2023-10-22 20:08:06 C 03 00 45.23 +32 02 55.4 M32
2023-10-22 20:08:54 C 03 00 44.80 +32 03 09.3 M32
2023-10-22 20:09:43 C 03 00 44.35 +32 03 23.9 M32
2023-10-22 20:10:31 C 03 00 43.98 +32 03 38.8 M32
2023-10-22 20:11:25 C 03 00 43.47 +32 03 54.7 M32
2023-10-23 02:30:58 C 02 57 06.58 +34 02 33.2 V C23
2023-10-23 02:35:35 C 02 57 03.72 +34 04 03.7 V C23
2023-10-23 02:39:38 C 02 57 01.20 +34 05 23.4 V C23
2023-10-23 18:37:56 C 02 44 50.96 +40 14 48.4 V P87
2023-10-23 18:41:13 C 02 44 47.67 +40 16 15.1 V P87
2023-10-23 18:45:15 C 02 44 43.65 +40 18 02.1 V P87
2023-10-23 18:49:58 C 02 44 38.93 +40 20 06.7 V P87
2023-10-24 18:21:51 C 02 08 04.270 +53 24 34.27 V Z80
2023-10-24 18:29:06 C 02 07 45.809 +53 29 31.02 V Z80
2023-10-24 18:36:23 C 02 07 27.228 +53 34 28.52 V Z80
2023-10-24 18:43:41 C 02 07 08.479 +53 39 28.48 V Z80
2023-10-25 00:29:05 C 01 49 18.80 +57 42 41.4 V C40
2023-10-25 00:32:55 C 01 49 05.04 +57 45 26.1 V C40
2023-10-25 00:36:42 C 01 48 51.44 +57 48 08.6 V C40
2023-10-25 00:42:33 C 01 48 30.30 +57 52 19.9 V C40
2023-10-25 00:46:22 C 01 48 16.40 +57 55 04.7 V C40
2023-10-25 00:50:10 C 01 48 02.62 +57 57 47.7 V C40
2023-10-25 09:41:30 C 01 05 58.291 +64 33 16.09 V T05
2023-10-25 09:46:18 C 01 05 27.312 +64 36 47.20 V T05
2023-10-25 09:56:10 C 01 04 23.110 +64 44 00.31 V T05