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74230 (1998 SN23)
Classification: Main-belt Asteroid          SPK-ID: 2074230
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1768097483118311 5.5295e-08  
a 2.59900191474674 1.1536e-08 au
q 2.139473040338402 1.427e-07 au
i 4.797422693108194 4.2198e-06 deg
node 124.4155543381259 7.0191e-05 deg
peri 249.53087866427 7.1375e-05 deg
M 55.35918614929469 1.1537e-05 deg
tp 2458765.160123019046
(2019-Oct-08.66012302)
4.9013e-05 TDB
period 1530.411872108471
4.19
1.0189e-05
2.79e-08
d
yr
n .2352307941155885 1.5661e-09 deg/d
Q 3.058530789155079 1.3575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      556  
   data-arc span      8279 days (22.67 yr)  
   first obs. used      1997-05-08  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56188  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:46:49  

Additional Information
 Earth MOID = 1.14564 au 
 Jupiter MOID = 2.41516 au 
 T_jup = 3.388 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457155.5 (2015-May-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1783458438219724 5.5838e-08  
q 2.134923730000038 1.444e-07 au
tp 2457230.963041698723
(2015-Jul-27.46304170)
4.8673e-05 TDB
node 124.5970837783541 7.0214e-05 deg
peri 248.5917764643438 7.1345e-05 deg
i 4.797632352138337 4.223e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      556  
   data-arc span      8279 days (22.67 yr)  
   first obs. used      1997-05-08  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56188  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:46:49  

Additional Information
 Jupiter MOID = 2.41516 au 
 T_jup = 3.388 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.117870103118865E-15 -8.046019237934486E-15 -5.891524424504303E-14 -1.019616819896098E-14 -9.021801515720301E-14 -5.59093127598928E-15
q -8.046019237934486E-15 2.085037982123234E-14 7.720603267461297E-14 2.865879705514652E-14 2.088107794136158E-13 1.484493864562044E-14
tp -5.891524424504303E-14 7.720603267461297E-14 2.369101256363078E-9 -1.273455594266544E-11 6.555627488069248E-10 -1.498888768939785E-12
node -1.019616819896098E-14 2.865879705514652E-14 -1.273455594266544E-11 4.930050699352649E-9 -4.915666838952889E-9 5.262988047052725E-11
peri -9.021801515720301E-14 2.088107794136158E-13 6.555627488069248E-10 -4.915666838952889E-9 5.090050979484753E-9 -5.272352235904805E-11
i -5.59093127598928E-15 1.484493864562044E-14 -1.498888768939785E-12 5.262988047052725E-11 -5.272352235904805E-11 1.78335426114925E-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 15.9   n/a MPO449468  

74230 (1998 SN23)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SN23 = 2002 PU126 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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