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249664 (1999 VG42)
Classification: Main-belt Asteroid          SPK-ID: 2249664
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1975795918858001 6.3879e-08  
a 3.197792478983422 2.6403e-08 au
q 2.565973946050396 2.0096e-07 au
i 6.911696880887618 5.751e-06 deg
node 234.6841859951894 6.2774e-05 deg
peri 152.2814836009952 6.4862e-05 deg
M 221.5293732940859 1.6441e-05 deg
tp 2459803.894767795914
(2022-Aug-12.39476780)
0.00010043 TDB
period 2088.689300300367
5.72
2.5869e-05
7.083e-08
d
yr
n .172356893841621 2.1347e-09 deg/d
Q 3.829611011916447 3.162e-08 au
  Orbit Determination Parameters
   # obs. used (total)      266  
   data-arc span      7499 days (20.53 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5453  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:46:46  

Additional Information
 Earth MOID = 1.57338 au 
 Jupiter MOID = 1.64182 au 
 T_jup = 3.153 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456494.5 (2013-Jul-21.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1989976271696341 6.3637e-08  
q 2.560078499012512 1.9986e-07 au
tp 2455630.366837783814
(2011-Mar-09.86683778)
8.5396e-05 TDB
node 234.6977668350277 6.275e-05 deg
peri 152.7625716799078 6.4817e-05 deg
i 6.914798633347099 5.7558e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      266  
   data-arc span      7499 days (20.53 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5453  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:46:46  

Additional Information
 Jupiter MOID = 1.64182 au 
 T_jup = 3.153 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.049691397980116E-15 -1.264857262480112E-14 -2.332745924956655E-12 -2.002566500144484E-14 -3.228654388889227E-13 -1.128439693649707E-14
q -1.264857262480112E-14 3.994226796782927E-14 7.430595420635529E-12 7.008507719948394E-14 1.069882799590111E-12 3.4942234502466E-14
tp -2.332745924956655E-12 7.430595420635529E-12 7.292521525013177E-9 1.747940017490415E-11 1.474403669547785E-9 1.291250567900283E-11
node -2.002566500144484E-14 7.008507719948394E-14 1.747940017490415E-11 3.937596457364169E-9 -3.904600568501186E-9 -1.928255503770178E-10
peri -3.228654388889227E-13 1.069882799590111E-12 1.474403669547785E-9 -3.904600568501186E-9 4.201297976672139E-9 1.936628349610337E-10
i -1.128439693649707E-14 3.4942234502466E-14 1.291250567900283E-11 -1.928255503770178E-10 1.936628349610337E-10 3.31292987113195E-11

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 16.0   n/a MPO433636  
diameter diameter 3.844 km 0.981 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249664 (1999 VG42)          Discovered 1999-Nov-04 by Spacewatch at Kitt Peak
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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