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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07244608270825574 3.335e-08  
a 3.06612992860156 2.026e-08 au
q 2.844000826199833 9.8749e-08 au
i 11.06432085403235 4.1858e-06 deg
node 52.93674183996979 2.0479e-05 deg
peri 219.5668344299676 4.7769e-05 deg
M 114.6982358201165 3.9524e-05 deg
tp 2458771.703632924555
(2019-Oct-15.20363292)
0.0002181 TDB
period 1961.030093783807
5.37
1.9437e-05
5.322e-08
d
yr
n .1835769890228355 1.8196e-09 deg/d
Q 3.288259031003287 2.1728e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1309  
   data-arc span      7999 days (21.90 yr)  
   first obs. used      1999-09-14  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51258  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:57  

Additional Information
 Earth MOID = 1.83808 au 
 Jupiter MOID = 1.77673 au 
 T_jup = 3.200 
[ 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 13.89   n/a E2021B10  
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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