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66361 (1999 JH90)
Classification: Main-belt Asteroid          SPK-ID: 2066361
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1742589164487714 3.8007e-08  
a 2.416932458724718 1.1153e-08 au
q 1.995760427337484 9.3944e-08 au
i 10.23810759569363 3.9162e-06 deg
node 135.0877790932737 2.4847e-05 deg
peri 122.6742564894714 2.8382e-05 deg
M 246.3855248229872 1.6903e-05 deg
tp 2459633.638077001609
(2022-Feb-23.13807700)
6.6177e-05 TDB
period 1372.44578631058
3.76
9.4994e-06
2.601e-08
d
yr
n .2623054430206347 1.8156e-09 deg/d
Q 2.838104490111952 1.3096e-08 au
  Orbit Determination Parameters
   # obs. used (total)      805  
   data-arc span      10991 days (30.09 yr)  
   first obs. used      1991-02-14  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53019  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:01:37  

Additional Information
 Earth MOID = .999729 au 
 Jupiter MOID = 2.29384 au 
 T_jup = 3.474 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.60   n/a MPCxxxxx  
diameter diameter 2.438 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.225   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66361 (1999 JH90)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JH90 = 2000 SX213 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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