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66342 (1999 JA68)
Classification: Main-belt Asteroid          SPK-ID: 2066342
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1880687911140809 3.5985e-08  
a 2.302722614220421 6.8815e-09 au
q 1.86965235589293 8.3486e-08 au
i 8.168241404426462 4.1154e-06 deg
node 73.74985142759715 2.7369e-05 deg
peri 190.7030894672434 2.9811e-05 deg
M 336.5906141320615 1.1612e-05 deg
tp 2459083.494322783773
(2020-Aug-21.99432278)
4.1192e-05 TDB
period 1276.323794682672
3.49
5.7213e-06
1.566e-08
d
yr
n .2820600865546861 1.2644e-09 deg/d
Q 2.735792872547911 8.1757e-09 au
  Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1999-04-12  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51064  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:18:21  

Additional Information
 Earth MOID = .854699 au 
 Jupiter MOID = 2.34243 au 
 T_jup = 3.553 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457315.5 (2015-Oct-20.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1883450947182733 3.5958e-08  
q 1.869024434089925 8.3492e-08 au
tp 2457806.219340514281
(2017-Feb-21.71934051)
4.1075e-05 TDB
node 73.79796253595912 2.737e-05 deg
peri 190.5322250309021 2.9799e-05 deg
i 8.168258339995207 4.1145e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      7765 days (21.26 yr)  
   first obs. used      1999-04-12  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51064  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:18:21  

Additional Information
 Jupiter MOID = 2.34243 au 
 T_jup = 3.553 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.292964443750724E-15 -2.995485728588107E-15 -6.586601234754731E-13 -1.78972275379959E-14 -1.30868711789323E-13 -1.531524589784748E-15
q -2.995485728588107E-15 6.970859907184786E-15 1.50431269846856E-12 4.153921322440822E-14 2.930697359977231E-13 3.56447327734316E-15
tp -6.586601234754731E-13 1.50431269846856E-12 1.687153726127538E-9 1.645391404529052E-11 4.928012066687368E-10 2.655933010914853E-12
node -1.78972275379959E-14 4.153921322440822E-14 1.645391404529052E-11 7.491195909554422E-10 -7.368943644961049E-10 -5.072794140823616E-11
peri -1.30868711789323E-13 2.930697359977231E-13 4.928012066687368E-10 -7.368943644961049E-10 8.879983066229343E-10 5.098889279502918E-11
i -1.531524589784748E-15 3.56447327734316E-15 2.655933010914853E-12 -5.072794140823616E-11 5.098889279502918E-11 1.69294932958552E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO468589  
diameter diameter 2.388 km 0.104 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.123   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66342 (1999 JA68)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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