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308295 (2005 JN99)
Classification: Main-belt Asteroid          SPK-ID: 2308295
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1238775374841474 5.4827e-08  
a 2.718715575157493 2.5823e-08 au
q 2.381927784587185 1.5589e-07 au
i 8.776284175198311 6.029e-06 deg
node 171.0217774154973 4.2068e-05 deg
peri 157.4583979115803 5.6321e-05 deg
M 49.85823575605029 3.179e-05 deg
tp 2458773.733709523417
(2019-Oct-17.23370952)
0.00014539 TDB
period 1637.359672552457
4.48
2.3328e-05
6.387e-08
d
yr
n .2198661699288104 3.1325e-09 deg/d
Q 3.0555033657278 2.9022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      138  
   data-arc span      5203 days (14.25 yr)  
   first obs. used      2005-04-30  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56081  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:57:39  

Additional Information
 Earth MOID = 1.37392 au 
 Jupiter MOID = 2.31982 au 
 T_jup = 3.332 
[ 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 17.1   n/a MPO440447  

308295 (2005 JN99)          Discovered 2005-May-09 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

Alternate Designations
 2005 JN99 = 2006 SG272 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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