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181720 (1994 YX3)
Classification: Main-belt Asteroid          SPK-ID: 2181720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02811758956456302 4.8343e-08  
a 2.702529253768997 1.7036e-08 au
q 2.626540645425296 1.376e-07 au
i 3.770459602671861 4.8412e-06 deg
node 292.9341193705681 8.0344e-05 deg
peri 163.6174760249198 0.00012922 deg
M 314.1800591487265 0.0001018 deg
tp 2459407.040895610410
(2021-Jul-11.54089561)
0.00045932 TDB
period 1622.759022345636
4.44
1.5344e-05
4.201e-08
d
yr
n .2218443989789894 2.0976e-09 deg/d
Q 2.778517862112699 1.7515e-08 au
  Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      9503 days (26.02 yr)  
   first obs. used      1994-12-31  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58828  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:45  

Additional Information
 Earth MOID = 1.64342 au 
 Jupiter MOID = 2.26665 au 
 T_jup = 3.363 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457356.5 (2015-Nov-30.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02707241323139847 4.7789e-08  
q 2.630446336614954 1.3618e-07 au
tp 2457764.275900122077
(2017-Jan-10.77590012)
0.00047788 TDB
node 293.0653378592776 8.0534e-05 deg
peri 159.2454484480539 0.00013318 deg
i 3.764778900173619 4.8363e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      251  
   data-arc span      9503 days (26.02 yr)  
   first obs. used      1994-12-31  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58828  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:45  

Additional Information
 Jupiter MOID = 2.26665 au 
 T_jup = 3.363 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.283756680019124E-15 -6.465445861224212E-15 4.921394733898179E-13 -1.697500339290243E-15 2.147713525759986E-13 -8.966986058979365E-16
q -6.465445861224212E-15 1.854433637231049E-14 1.391546827676164E-13 8.298158829408916E-15 -2.844533121590729E-13 2.919334177089708E-15
tp 4.921394733898179E-13 1.391546827676164E-13 2.283656193531472E-7 6.840946093261043E-11 5.071103218041002E-8 2.491153110457417E-11
node -1.697500339290243E-15 8.298158829408916E-15 6.840946093261043E-11 6.485683204987719E-9 -6.456578664898921E-9 6.490121087947765E-11
peri 2.147713525759986E-13 -2.844533121590729E-13 5.071103218041002E-8 -6.456578664898921E-9 1.773709080876142E-8 -5.92807626490759E-11
i -8.966986058979365E-16 2.919334177089708E-15 2.491153110457417E-11 6.490121087947765E-11 -5.92807626490759E-11 2.33894594215364E-11

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 16.60   n/a MPCxxxxx  

181720 (1994 YX3)          Discovered 1994-Dec-31 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1994 YX3 = 2002 TF151 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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