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35889 (1999 JA81)
Classification: Main-belt Asteroid          SPK-ID: 2035889
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1341500651899278 4.5543e-08  
a 2.614572501940399 1.7242e-08 au
q 2.263827430361302 1.1932e-07 au
i 14.3207082975342 6.5983e-06 deg
node 107.3033120990865 1.8304e-05 deg
peri 136.2938437829491 3.285e-05 deg
M 353.1220361179535 3.0946e-05 deg
tp 2459030.002366303728
(2020-Jun-29.50236630)
0.00013292 TDB
period 1544.185467019618
4.23
1.5275e-05
4.182e-08
d
yr
n .2331326176089614 2.3061e-09 deg/d
Q 2.965317573519497 1.9555e-08 au
  Orbit Determination Parameters
   # obs. used (total)      894  
   data-arc span      8068 days (22.09 yr)  
   first obs. used      1997-12-31  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57675  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:58:44  

Additional Information
 Earth MOID = 1.2703 au 
 Jupiter MOID = 2.16383 au 
 T_jup = 3.351 
[ 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 14.5   n/a MPO436016  
diameter diameter 3.748 km 0.701 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.240   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35889 (1999 JA81)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JA81 = 1997 YU18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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