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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .102882314128727 1.1358e-08  
a 3.134696628598942 1.5278e-08 au
q 2.812191785357164 3.489e-08 au
i 24.02931475676063 7.2187e-07 deg
node 127.8199986895358 2.3441e-06 deg
peri 237.9084889679911 1.4243e-05 deg
M 356.2344205885596 1.1358e-05 deg
tp 2459221.704157044624
(2021-Jan-07.20415704)
6.3976e-05 TDB
period 2027.177149118885
5.55
1.482e-05
4.057e-08
d
yr
n .1775868478768491 1.2983e-09 deg/d
Q 3.45720147184072 1.685e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2034  
   data-arc span      9487 days (25.97 yr)  
   first obs. used      1995-01-29  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42732  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:20:24  

Additional Information
 Earth MOID = 1.86432 au 
 Jupiter MOID = 2.0176 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 12.60   n/a MPCxxxxx  
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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