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91893 (1999 VP4)
Classification: Main-belt Asteroid          SPK-ID: 2091893
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07288591440472626 3.6744e-08  
a 3.068368801611002 2.2748e-08 au
q 2.84472793577465 1.1332e-07 au
i 11.0628348999754 5.1513e-06 deg
node 52.95773884318069 2.134e-05 deg
peri 220.0386032768354 4.9439e-05 deg
M 41.51012852248349 4.1287e-05 deg
tp 2458774.133924490012
(2019-Oct-17.63392449)
0.00022615 TDB
period 1963.178387642343
5.37
2.1832e-05
5.977e-08
d
yr
n .1833761018693456 2.0393e-09 deg/d
Q 3.292009667447354 2.4406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1113  
   data-arc span      7626 days (20.88 yr)  
   first obs. used      1999-09-14  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52802  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:20:42  

Additional Information
 Earth MOID = 1.839 au 
 Jupiter MOID = 1.77714 au 
 T_jup = 3.199 
[ 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 13.9   n/a MPO474798  
diameter diameter 7.807 km 0.996 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.096   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

91893 (1999 VP4)          Discovered 1999-Nov-01 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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