2001 SY169

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3843096612 ± 1.05e-04
Semi-major axis (a)1.2055071299 AU ± 3.47e-05
Inclination (i)4.85049413° ± 1.86e-02
Long. of Asc. Node (Ω)171.26840957° ± 2.39e-02
Arg. of Perihelion (ω)81.99835322° ± 3.48e-02
Mean Anomaly (M)170.92085920° ± 1.66e-01
Mean Motion (n)0.7446592716°/day ± 3.21e-05
Perihelion dist (q)0.74221909 AU ± 1.29e-04
Aphelion dist (Q)1.66879517 AU ± 1.36e-04
Orbital Period1.32359365 yr ± 5.71e-05
Physical Parameters
H (abs. magnitude)23.10
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-27
RMS Residual0.858″
Uncertainty3
Orbit TypeApollo
MOID0.004001 AU
Observations Used14
Oppositions1
Arc Total2001-2013
First Observation Used2001-09-19
Last Observation Used2001-09-25
Observations (14)
Date Type RA Dec Mag Band Observatory
2001-09-19 07:45:31 C 01 02 11.31 +01 19 33.0 19.6 c 704
2001-09-19 08:05:52 C 01 02 07.10 +01 18 48.0 19.8 c 704
2001-09-19 08:46:35 C 01 01 58.52 +01 17 16.8 20.3 c 704
2001-09-19 09:06:57 C 01 01 54.13 +01 16 32.3 20.9 c 704
2001-09-20 07:57:16 C 00 57 35.68 +00 27 45.3 c 649
2001-09-20 08:00:36 C 00 57 35.04 +00 27 38.2 c 649
2001-09-20 08:03:58 C 00 57 34.44 +00 27 31.7 c 649
2001-09-24 08:16:54 C 00 42 05.16 -02 23 31.4 20.0 i 704
2001-09-24 08:37:56 C 00 42 01.97 -02 24 03.4 19.5 i 704
2001-09-24 08:58:59 C 00 41 58.65 -02 24 37.1 19.8 i 704
2001-09-24 09:20:02 C 00 41 55.52 -02 25 08.1 20.2 i 704
2001-09-25 08:38:51 C 00 38 44.98 -02 59 18.8 c 649
2001-09-25 08:45:40 C 00 38 43.95 -02 59 28.7 c 649
2001-09-25 08:52:17 C 00 38 43.02 -02 59 38.3 c 649
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2013-03-07 03:30:00 642878.686 1 Hz 8560 -14 -14
2013-03-07 03:50:00 640833.615 0.5 Hz 8560 -14 -14
2013-03-07 04:10:00 17196945.64 10 us 8560 -14 -14
2013-03-07 04:30:00 17107573.59 1 us 8560 -14 -14
2013-03-07 04:40:00 17063005.43 0.125 us 8560 -14 -14
2013-03-07 05:00:00 16974116.46 0.25 us 8560 -14 -14
2013-03-10 00:40:00 7394184.87 0.5 us 8560 -14 -14
2013-03-10 00:40:00 -332641.149 0.6 Hz 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)