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129813 (1999 NJ)
Classification: Mars-crossing Asteroid          SPK-ID: 2129813
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2937076336386365 4.0556e-08  
a 2.339346197376451 8.2744e-09 au
q 1.652262361483471 9.2678e-08 au
i 6.403973398200317 4.1685e-06 deg
node 104.2428470031505 4.3766e-05 deg
peri 199.337711711782 4.4257e-05 deg
M 295.8255348123161 8.2671e-06 deg
tp 2459233.469962723598
(2021-Jan-18.96996272)
3.0643e-05 TDB
period 1306.893424592043
3.58
6.9339e-06
1.898e-08
d
yr
n .2754624005491319 1.4615e-09 deg/d
Q 3.026430033269431 1.0705e-08 au
  Orbit Determination Parameters
   # obs. used (total)      413  
   data-arc span      7603 days (20.82 yr)  
   first obs. used      1999-07-06  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56888  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:47:37  

Additional Information
 Earth MOID = .638507 au 
 Jupiter MOID = 2.2319 au 
 T_jup = 3.498 
[ 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 16.8   n/a MPO469354  

129813 (1999 NJ)          Discovered 1999-Jul-06 by Broughton, J. at Reedy Creek
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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