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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1047954251983476 3.9818e-08  
a 3.139091171685914 1.9627e-08 au
q 2.81012877761271 1.2641e-07 au
i 23.99011446406639 5.1682e-06 deg
node 127.8814323882518 1.1301e-05 deg
peri 237.4734242821916 2.8686e-05 deg
M 250.3291569708268 2.8297e-05 deg
tp 2459219.360839682515
(2021-Jan-04.86083968)
0.00016233 TDB
period 2031.441503795515
5.56
1.9052e-05
5.216e-08
d
yr
n .1772140617031706 1.662e-09 deg/d
Q 3.468053565759118 2.1684e-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 = 1.86266 au 
 Jupiter MOID = 2.00508 au 
 T_jup = 3.069 
[ 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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