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66355 (1999 JN85)
Classification: Main-belt Asteroid          SPK-ID: 2066355
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 .2068254794505283 2.8706e-08  
a 2.453862333696772 1.1211e-08 au
q 1.946341080024344 7.0141e-08 au
i 8.740214603887525 5.0212e-06 deg
node 155.0748915838857 2.5729e-05 deg
peri 107.1648035250726 2.9843e-05 deg
M 205.7676481548853 1.6867e-05 deg
tp 2459802.015328043981
(2022-Aug-10.51532804)
6.7515e-05 TDB
period 1404.021371036964
3.84
9.6217e-06
2.634e-08
d
yr
n .2564063535116392 1.7572e-09 deg/d
Q 2.961383587369199 1.353e-08 au
  Orbit Determination Parameters
   # obs. used (total)      904  
   data-arc span      7920 days (21.68 yr)  
   first obs. used      1999-05-15  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53763  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:21:34  

Additional Information
 Earth MOID = .950758 au 
 Jupiter MOID = 2.1809 au 
 T_jup = 3.449 
[ 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 15.39   n/a MPCxxxxx  
diameter diameter 2.156 km 0.439 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.380   0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66355 (1999 JN85)          Discovered 1999-May-15 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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