154276 (2002 SY50)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6889134523 ± 3.42e-09
Semi-major axis (a)1.7052788111 AU ± 2.85e-09
Inclination (i)8.74051555° ± 1.84e-06
Long. of Asc. Node (Ω)34.01625558° ± 3.34e-06
Arg. of Perihelion (ω)99.70762330° ± 3.15e-06
Mean Anomaly (M)105.16927769° ± 9.00e-07
Mean Motion (n)0.4426079216°/day ± 1.11e-09
Perihelion dist (q)0.53048930 AU ± 5.90e-09
Aphelion dist (Q)2.88006832 AU ± 7.56e-09
Orbital Period2.22686092 yr ± 5.58e-09
Physical Parameters
H (abs. magnitude)17.61
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.291″
Uncertainty0
Orbit TypeApollo
MOID0.003664 AU
Observations Used1098
Radar Obs Used7
Oppositions1
Arc Total2002-2025
First Observation Used2002-08-25
Last Observation Used2025-06-29
Observations (1204)
Date Type RA Dec Mag Band Observatory
2002-11-01 20:25:54 C 21 16 33.66 -16 04 52.5 i 212
2002-11-01 20:27:44 C 21 16 31.32 -16 04 55.3 i 212
2002-11-01 21:23:59 C 21 15 16.97 -16 06 18.0 939
2002-11-01 21:28:22 C 21 15 11.18 -16 06 23.9 939
2002-11-01 21:32:43 C 21 15 05.46 -16 06 29.9 939
2002-11-02 18:54:09 C 20 47 12.09 -16 31 16.4 941
2002-11-02 18:55:09 C 20 47 10.74 -16 31 17.6 941
2002-11-04 09:59:45 C 19 56 51.90 -16 38 31.3 m 428
2002-11-04 10:00:23 C 19 56 51.09 -16 38 31.5 m 428
2002-11-04 10:00:59 C 19 56 50.34 -16 38 31.1 m 428
2002-11-04 10:57:04 C 19 55 41.56 -16 39 53.6 300
2002-11-04 10:58:49 C 19 55 39.29 -16 39 52.4 300
2002-11-04 11:00:35 C 19 55 37.06 -16 39 53.6 300
2002-11-04 11:02:18 C 19 55 35.05 -16 39 51.6 300
2002-11-04 11:04:03 C 19 55 32.78 -16 39 51.4 300
2003-06-04 18:15:38 C 20 26 54.84 -32 33 40.4 e 413
2003-06-04 18:30:33 C 20 26 54.06 -32 33 46.7 e 413
2003-06-13 19:18:21 C 20 13 52.47 -34 02 07.1 r 413
2004-09-02 10:23:00 C 23 19 16.22 -17 51 02.9 o 568
2004-09-02 10:27:58 C 23 19 15.89 -17 51 04.9 o 568
2004-10-31 10:59:34 C 21 56 14.18 -20 54 09.6 c 474
2004-10-31 11:06:59 C 21 56 14.11 -20 54 07.7 c 474
2004-12-10 01:54:52 C 22 12 21.05 -15 22 37.6 d 291
2004-12-10 02:00:30 C 22 12 21.28 -15 22 34.8 d 291
2004-12-10 02:06:42 C 22 12 21.57 -15 22 31.3 d 291
2005-05-04 06:37:24 C 21 23 09.41 -32 02 45.7 c 844
2005-05-04 06:39:33 C 21 23 08.43 -32 02 54.0 c 844
2005-05-04 06:41:41 C 21 23 07.51 -32 03 02.3 c 844
2005-05-04 06:42:46 C 21 23 07.05 -32 03 06.3 c 844
2005-05-04 06:43:50 C 21 23 06.57 -32 03 10.9 c 844
2005-05-14 17:26:02 C 19 28 14.69 -43 15 36.8 r E12
2005-05-14 17:45:04 C 19 28 05.78 -43 16 04.1 r E12
2005-05-14 18:04:01 C 19 27 56.93 -43 16 30.6 r E12
2005-05-14 18:22:57 C 19 27 48.09 -43 16 57.6 r E12
2005-05-19 12:23:14 C 18 38 35.91 -45 00 44.6 r E17
2005-05-19 12:27:26 C 18 38 34.18 -45 00 46.6 r E17
2005-05-19 12:31:39 C 18 38 32.31 -45 00 48.7 r E17
2011-09-15 17:32:40 C 05 16 28.37 +19 27 06.6 o 300
2011-09-15 17:35:07 C 05 16 28.96 +19 27 07.9 o 300
2011-09-15 17:37:37 C 05 16 29.61 +19 27 09.4 o 300
2011-09-15 17:40:05 C 05 16 30.32 +19 27 10.3 o 300
2011-09-26 10:51:15 C 06 39 52.34 +21 45 17.4 18.4 c 704
2011-09-26 11:09:26 C 06 39 59.23 +21 45 22.6 18.5 c 704
2011-09-26 11:27:37 C 06 40 06.15 +21 45 27.9 18.2 c 704
2011-10-04 03:09:30 C 07 57 30.36 +21 36 08.0 c A24
2011-10-04 03:10:59 C 07 57 31.01 +21 36 07.6 c A24
2011-10-04 04:02:21 C 07 57 53.85 +21 35 46.6 c A24
2011-10-04 04:03:50 C 07 57 54.63 +21 35 45.4 c A24
2011-10-04 04:05:19 C 07 57 55.32 +21 35 43.8 c A24
2013-08-27 08:39:35 C 00 12 55.16 -11 25 18.5 u 807
Radar Observations (7)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2002-10-28 07:00:00 612496.5 8 Hz 8560 -14 -14
2002-10-30 01:10:00 470127.3 10 Hz 8560 -14 -14
2002-10-30 02:30:00 91610928.2 5 us 8560 -14 -14
2002-10-31 04:30:00 87371438.4 5 us 8560 -14 -14
2002-11-02 02:20:00 83582561.3 5 us 8560 -14 -14
2002-11-04 04:00:00 85265697 5 us 8560 -14 -14
2002-11-05 02:00:00 87864822.8 5 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)