523950 (1998 SZ27)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5067352288 ± 2.00e+00
Semi-major axis (a)0.9051333949 AU ± 3.00e+00
Inclination (i)23.64113598° ± 4.00e+00
Long. of Asc. Node (Ω)166.67288055° ± 5.00e+00
Arg. of Perihelion (ω)47.73088466° ± 6.00e+00
Mean Anomaly (M)280.24867793° ± 3.41e-05
Mean Motion (n)1.1445727273°/day ± 5.69e+00
Perihelion dist (q)0.44647042 AU ± 2.34e+00
Aphelion dist (Q)1.36379637 AU ± 4.87e+00
Orbital Period0.86113032 yr ± 4.28e+00
NGA Modelr2
A2-3.75660344e-06 AU/d²
Physical Parameters
H (abs. magnitude)20.17
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.404″
Uncertainty0
Orbit TypeAten
MOID0.006510 AU
Observations Used129
Oppositions4
Arc Total1998-2023
First Observation Used1998-09-21
Last Observation Used2023-10-04
Observations (164)
Date Type RA Dec Mag Band Observatory
1998-09-21 03:30:16 C 21 13 41.85 -39 32 38.9 18.7 a 704
1998-09-21 04:02:05 C 21 13 48.82 -39 32 57.9 18.9 a 704
1998-09-21 04:33:55 C 21 13 55.42 -39 33 20.0 19.2 a 704
1998-09-21 05:05:40 C 21 14 02.39 -39 33 36.1 18.8 a 704
1998-09-21 05:37:34 C 21 14 08.98 -39 33 54.9 18.4 a 704
1998-09-23 11:04:38 C 21 24 55.46 -39 57 28.3 b 426
1998-09-23 11:09:35 C 21 24 56.21 -39 57 30.3 b 426
1998-09-23 11:15:05 C 21 24 56.99 -39 57 32.1 b 426
1998-09-23 11:19:50 C 21 24 57.85 -39 57 33.9 b 426
1998-09-24 10:16:32 C 21 28 46.79 -40 03 48.1 b 426
1998-09-24 10:23:18 C 21 28 47.73 -40 03 50.3 b 426
1998-09-24 10:29:54 C 21 28 48.65 -40 03 52.3 b 426
1998-09-25 10:05:02 C 21 32 19.89 -40 08 26.3 422
1998-09-25 10:11:00 C 21 32 20.61 -40 08 27.2 422
1998-09-25 10:12:06 C 21 32 20.74 -40 08 26.4 422
1998-09-26 11:36:24 C 21 35 47.00 -40 11 35.4 b 426
1998-09-26 11:52:14 C 21 35 48.88 -40 11 35.8 b 426
1998-09-26 12:00:18 C 21 35 49.78 -40 11 36.6 b 426
1998-09-26 12:16:54 C 21 35 50.86 -40 11 37.0 422
1998-09-26 12:17:49 C 21 35 50.96 -40 11 36.7 422
1998-09-26 12:18:53 C 21 35 51.07 -40 11 36.6 422
1998-09-29 10:07:52 C 21 43 55.85 -40 12 50.5 b 426
1998-09-29 10:16:31 C 21 43 56.62 -40 12 51.4 b 426
1998-09-29 10:25:07 C 21 43 57.39 -40 12 50.3 b 426
2017-08-27 22:54:10 S 04 13 33.74 +18 02 11.9 L C51
2017-08-28 00:28:36 S 04 13 20.35 +17 56 21.9 L C51
2017-08-28 02:02:51 S 04 13 06.97 +17 50 30.9 L C51
2017-08-28 03:37:06 S 04 12 53.60 +17 44 40.6 L C51
2017-08-28 06:45:47 S 04 12 26.74 +17 32 56.3 L C51
2017-08-29 00:59:16 C 04 09 52.77 +16 23 46.5 S 033
2017-08-29 01:02:34 C 04 09 52.29 +16 23 34.1 S 033
2017-08-29 01:05:52 C 04 09 51.80 +16 23 21.5 S 033
2017-08-29 01:06:28 C 04 09 51.76 +16 23 21.1 q 246
2017-08-29 01:07:34 C 04 09 51.72 +16 23 15.9 q 246
2017-08-29 01:12:34 C 04 09 50.99 +16 22 58.6 19.7 U 104
2017-08-29 01:23:51 C 04 09 49.33 +16 22 16.4 19.8 U 104
2017-08-29 01:35:35 C 04 09 47.59 +16 21 32.1 19.7 U 104
2017-08-29 01:50:22 C 04 09 45.06 +16 20 32.4 20.0 S K80
2017-08-29 02:06:39 C 04 09 42.78 +16 19 30.8 S 033
2017-08-29 02:09:59 C 04 09 42.28 +16 19 18.1 S 033
2017-08-29 02:11:04 C 04 09 41.98 +16 19 14.0 20.5 S K80
2017-08-29 02:13:17 C 04 09 41.80 +16 19 05.8 S 033
2017-08-29 02:28:30 C 04 09 39.38 +16 18 06.9 20.1 S K80
2017-08-29 08:37:27 C 04 08 46.87 +15 54 38.9 q 734
2017-08-29 08:44:57 C 04 08 45.74 +15 54 09.9 q 734
2017-08-29 08:53:40 C 04 08 44.42 +15 53 37.1 q 734
2017-08-29 08:56:11 C 04 08 44.03 +15 53 28.1 q 734
2017-08-30 11:39:49 C 04 04 49.33 +14 09 20.5 o 691
2017-08-30 11:51:11 C 04 04 47.57 +14 08 35.7 o 691
2017-09-07 04:40:35 C 03 35 30.74 +01 03 24.9 q G40