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21896 (1999 VM6)
Classification: Main-belt Asteroid          SPK-ID: 2021896
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .168876676645421 3.823e-08  
a 3.180547518825773 2.1379e-08 au
q 2.643427223933636 1.2938e-07 au
i 5.761237157192749 4.2631e-06 deg
node 118.7455281508188 3.5884e-05 deg
peri 238.5303499136294 3.7883e-05 deg
M 308.4489269944857 1.3861e-05 deg
tp 2459497.178768891149
(2021-Oct-09.67876889)
8.154e-05 TDB
period 2071.81636722458
5.67
2.089e-05
5.719e-08
d
yr
n .1737605734248825 1.752e-09 deg/d
Q 3.717667813717909 2.4989e-08 au
  Orbit Determination Parameters
   # obs. used (total)      930  
   data-arc span      9775 days (26.76 yr)  
   first obs. used      1993-11-11  
   last obs. used      2020-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53452  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 01:54:20  

Additional Information
 Earth MOID = 1.64323 au 
 Jupiter MOID = 1.74573 au 
 T_jup = 3.169 
[ 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 14.34   n/a E2021B10  
diameter diameter 8.109 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21896 (1999 VM6)          Discovered 1999-Nov-07 by Urata, T. at Oohira
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 VM6 = 1995 AJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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