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173191 (1998 KJ61)
Classification: Main-belt Asteroid          SPK-ID: 2173191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2082275235787593 4.669e-08  
a 2.341420411271389 1.4956e-08 au
q 1.853872237375588 1.1026e-07 au
i 6.11660120204015 6.1935e-06 deg
node 133.2537806552896 5.8107e-05 deg
peri 123.6055417992269 6.2804e-05 deg
M 45.9760681748035 2.9704e-05 deg
tp 2458833.372908907162
(2019-Dec-15.87290891)
0.00010675 TDB
period 1308.631972718247
3.58
1.2539e-05
3.433e-08
d
yr
n .2750964423192411 2.6358e-09 deg/d
Q 2.828968585167191 1.807e-08 au
  Orbit Determination Parameters
   # obs. used (total)      297  
   data-arc span      8103 days (22.18 yr)  
   first obs. used      1998-05-23  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 13:03:49  

Additional Information
 Earth MOID = .847192 au 
 Jupiter MOID = 2.25269 au 
 T_jup = 3.527 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456707.5 (2014-Feb-19.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .208907406549257 4.6757e-08  
q 1.851573667006643 1.1024e-07 au
tp 2456215.779861522711
(2012-Oct-15.27986152)
8.8816e-05 TDB
node 133.2905171912555 5.8148e-05 deg
peri 123.5213630085149 6.2783e-05 deg
i 6.114873869891967 6.1903e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      297  
   data-arc span      8103 days (22.18 yr)  
   first obs. used      1998-05-23  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 13:03:49  

Additional Information
 Jupiter MOID = 2.25269 au 
 T_jup = 3.527 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.186246340373892E-15 -5.125897062442019E-15 -1.115742338139889E-12 9.887083690715881E-15 -2.648790742642406E-13 -1.183219726962317E-15
q -5.125897062442019E-15 1.215228242287907E-14 3.258714510005066E-12 -2.854925212986795E-14 7.985082237144028E-13 3.044042914887507E-15
tp -1.115742338139889E-12 3.258714510005066E-12 7.888194015103105E-9 -4.506163595084301E-11 2.140218168400896E-9 7.486084399931056E-12
node 9.887083690715881E-15 -2.854925212986795E-14 -4.506163595084301E-11 3.38123601863837E-9 -3.373814377023794E-9 1.219459074599568E-10
peri -2.648790742642406E-13 7.985082237144028E-13 2.140218168400896E-9 -3.373814377023794E-9 3.94166452750975E-9 -1.193578368068604E-10
i -1.183219726962317E-15 3.044042914887507E-15 7.486084399931056E-12 1.219459074599568E-10 -1.193578368068604E-10 3.831935117981961E-11

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 MPO433112  

173191 (1998 KJ61)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Alternate Designations
 1998 KJ61 = 2002 RJ220 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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