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JPL Small-Body Database Browser
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20427 (1998 VX44)
Classification: Main-belt Asteroid          SPK-ID: 2020427
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1034103215958138 3.9805e-08  
a 3.136805704597714 2.0423e-08 au
q 2.812427617901681 1.2577e-07 au
i 24.02690901607161 5.1718e-06 deg
node 127.8173487324035 1.1278e-05 deg
peri 237.7355151397424 2.9028e-05 deg
M 320.903557500716 2.8962e-05 deg
tp 2459220.876152332689
(2021-Jan-06.37615233)
0.00016422 TDB
period 2029.223370929999
5.56
1.9818e-05
5.426e-08
d
yr
n .1774077734158024 1.7326e-09 deg/d
Q 3.461183791293747 2.2535e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1588  
   data-arc span      8998 days (24.64 yr)  
   first obs. used      1995-01-29  
   last obs. used      2019-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4577  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:29:54  

Additional Information
 Earth MOID = 1.86611 au 
 Jupiter MOID = 2.01364 au 
 T_jup = 3.070 
[ 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 12.6   n/a MPO492967  
diameter diameter 17.924 km 0.675 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.066   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

20427 (1998 VX44)          Discovered 1998-Nov-13 by Lagerkvist, C.-I. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 VX44 = 2000 AO190 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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