2001 EC16

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3640064516 ± 4.40e-08
Semi-major axis (a)1.3456524803 AU ± 3.95e-07
Inclination (i)4.71183995° ± 3.69e-06
Long. of Asc. Node (Ω)175.46700491° ± 6.31e-06
Arg. of Perihelion (ω)70.60099019° ± 2.13e-05
Mean Anomaly (M)258.79093925° ± 7.62e-04
Mean Motion (n)0.6314121024°/day ± 2.78e-07
Perihelion dist (q)0.85582630 AU ± 2.58e-07
Aphelion dist (Q)1.83547866 AU ± 5.42e-07
Orbital Period1.56098732 yr ± 6.88e-07
NGA Modelr2
A21.35407608e-12 ± 5.13e-13 AU/d²
Physical Parameters
H (abs. magnitude)22.38
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.398″
Uncertainty0
Orbit TypeApollo
MOID0.011752 AU
Observations Used186
Radar Obs Used10
Oppositions1
Arc Total2001-2015
First Observation Used2001-01-28
Last Observation Used2015-09-18
Observations (206)
Date Type RA Dec Mag Band Observatory
2015-08-25 09:16:08 C 01 34 54.34 +13 25 24.6 u H21
2015-08-25 09:39:32 C 01 34 52.83 +13 25 03.9 u H21
2015-09-18 09:20:16 C 00 47 44.10 +03 46 32.7 q G96
2015-09-18 09:27:38 C 00 47 43.38 +03 46 25.0 q G96
2015-09-18 09:34:59 C 00 47 42.64 +03 46 17.6 q G96
2015-09-18 09:42:21 C 00 47 41.93 +03 46 10.1 q G96
Radar Observations (10)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2001-03-24 08:40:00 -178088.7 3 Hz 8560 -14 -14
2001-03-24 09:10:00 11997683 20 us 8560 -14 -14
2001-03-24 11:20:00 -207772.45 0.1 Hz 8560 -14 -14
2001-03-24 12:00:00 12235160.9 1 us 8560 -14 -14
2001-03-24 12:20:00 12265649.1 0.38 us 8560 -14 -14
2001-03-24 12:20:00 -219438.23 0.25 Hz 8560 -14 -14
2001-03-25 13:30:00 -389030.7 0.2 Hz 8560 -14 -14
2001-03-25 13:40:00 -390249.6 0.1 Hz 8560 -14 -14
2001-03-25 14:10:00 15793328 1 us 8560 -14 -14
2001-03-26 13:53:00 -132358.87 0.03 Hz 2380 -9 -1
Station codes
-14 DSS-14 Goldstone (70-m) -9 Green Bank GBT (100-m) -1 Arecibo (305-m, 1963–2020)