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312598 (2009 KG22)
Classification: Main-belt Asteroid          SPK-ID: 2312598
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .143131894685298 5.8797e-08  
a 2.632110560613686 2.5558e-08 au
q 2.255371589051867 1.4744e-07 au
i 12.02532390122469 7.5396e-06 deg
node 193.8543129517286 2.2701e-05 deg
peri 128.3977036031687 3.4462e-05 deg
M 135.6721397109317 2.9451e-05 deg
tp 2458412.682120171340
(2018-Oct-21.18212017)
0.00012196 TDB
period 1559.748649864237
4.27
2.2718e-05
6.22e-08
d
yr
n .2308064187337717 3.3618e-09 deg/d
Q 3.008849532175504 2.9216e-08 au
  Orbit Determination Parameters
   # obs. used (total)      187  
   data-arc span      6798 days (18.61 yr)  
   first obs. used      2001-06-15  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58282  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:47:10  

Additional Information
 Earth MOID = 1.26619 au 
 Jupiter MOID = 2.42916 au 
 T_jup = 3.354 
[ 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 MPO455304  
diameter diameter 2.265 km 0.230 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

312598 (2009 KG22)          Discovered 2009-May-17 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

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