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181371 (2006 SD4)
Classification: Main-belt Asteroid          SPK-ID: 2181371
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1542383405668505 5.8314e-08  
a 2.38144682584696 1.5579e-08 au
q 2.014136419280132 1.4297e-07 au
i 4.655056823373415 5.1082e-06 deg
node 292.4055124283273 7.1776e-05 deg
peri 73.22091948676959 7.3402e-05 deg
M 313.0865312308337 1.5393e-05 deg
tp 2459375.426177120210
(2021-Jun-09.92617712)
5.7886e-05 TDB
period 1342.331433071618
3.68
1.3172e-05
3.606e-08
d
yr
n .2681900990549125 2.6317e-09 deg/d
Q 2.748757232413789 1.7982e-08 au
  Orbit Determination Parameters
   # obs. used (total)      258  
   data-arc span      10034 days (27.47 yr)  
   first obs. used      1993-01-23  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60888  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:30:20  

Additional Information
 Earth MOID = 1.0165 au 
 Jupiter MOID = 2.73217 au 
 T_jup = 3.517 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.27   n/a E2021B55  

181371 (2006 SD4)          Discovered 2006-Sep-16 by CSS at Catalina
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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