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312979 (1999 KT4)
Classification: Mars-crossing Asteroid          SPK-ID: 2312979
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3673662656796456 4.8029e-08  
a 2.212969656164588 9.0207e-09 au
q 1.399999257517034 1.0238e-07 au
i 2.290899756215913 7.2079e-06 deg
node 111.4703904356285 0.00014272 deg
peri 127.6760132696713 0.00014373 deg
M 134.3897021731095 1.8465e-05 deg
tp 2458551.625322525312
(2019-Mar-09.12532253)
5.9327e-05 TDB
period 1202.435017548702
3.29
7.3522e-06
2.013e-08
d
yr
n .2993924783843207 1.8306e-09 deg/d
Q 3.025940054812141 1.2335e-08 au
  Orbit Determination Parameters
   # obs. used (total)      214  
   data-arc span      7473 days (20.46 yr)  
   first obs. used      1999-03-22  
   last obs. used      2019-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64569  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:36  

Additional Information
 Earth MOID = .389534 au 
 Jupiter MOID = 1.99314 au 
 T_jup = 3.563 
[ 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 17.7   n/a MPO494659  

312979 (1999 KT4)          Discovered 1999-May-18 by LINEAR at Socorro
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

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