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102644 (1999 VA44)
Classification: Main-belt Asteroid          SPK-ID: 2102644
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1158141157406769 4.3444e-08  
a 2.371025024546143 9.6491e-09 au
q 2.096426857929315 1.0604e-07 au
i 3.437405742345641 4.1924e-06 deg
node 225.1426321344036 7.2464e-05 deg
peri 150.6944875675444 7.4521e-05 deg
M 297.6484454817205 1.8563e-05 deg
tp 2459431.465662368447
(2021-Aug-04.96566237)
6.9407e-05 TDB
period 1333.529518149621
3.65
8.1404e-06
2.229e-08
d
yr
n .26996027841928 1.6479e-09 deg/d
Q 2.645623191162972 1.0767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      8533 days (23.36 yr)  
   first obs. used      1997-03-05  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51177  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:53:30  

Additional Information
 Earth MOID = 1.09711 au 
 Jupiter MOID = 2.81754 au 
 T_jup = 3.533 
[ 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 15.64   n/a E2021B55  
diameter diameter 1.909 km 0.324 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.306   0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102644 (1999 VA44)          Discovered 1999-Nov-03 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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