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181981 (1999 VC71)
Classification: Main-belt Asteroid          SPK-ID: 2181981
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2547451292632872 4.536e-08  
a 3.055637370495258 1.4034e-08 au
q 2.277228633566713 1.4075e-07 au
i 2.327069132114621 3.5157e-06 deg
node 93.21476278613211 0.00012645 deg
peri 265.9492360004297 0.00012679 deg
M 19.81854488741466 7.1731e-06 deg
tp 2459093.096011357340
(2020-Aug-31.59601136)
3.8972e-05 TDB
period 1950.972492229306
5.34
1.3441e-05
3.68e-08
d
yr
n .184523360238996 1.2713e-09 deg/d
Q 3.834046107423804 1.761e-08 au
  Orbit Determination Parameters
   # obs. used (total)      675  
   data-arc span      7771 days (21.28 yr)  
   first obs. used      1999-11-04  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49376  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:51  

Additional Information
 Earth MOID = 1.27361 au 
 Jupiter MOID = 1.62184 au 
 T_jup = 3.184 
[ 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 15.79   n/a E2021B55  

181981 (1999 VC71)          Discovered 1999-Nov-04 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1999 VC71 = 2004 RC69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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