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74231 (1998 SS24)
Classification: Main-belt Asteroid          SPK-ID: 2074231
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1565732236652652 3.3608e-08  
a 2.615764222580876 9.7245e-09 au
q 2.206205585903122 8.7914e-08 au
i 5.014891015603855 3.0627e-06 deg
node 74.76262608450394 4.1414e-05 deg
peri 295.0704600747055 4.2652e-05 deg
M 92.13983808104149 9.5899e-06 deg
tp 2458805.004757282746
(2019-Nov-17.50475728)
4.0796e-05 TDB
period 1545.241345583685
4.23
8.617e-06
2.359e-08
d
yr
n .2329733158052518 1.2992e-09 deg/d
Q 3.025322859258631 1.1247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      900  
   data-arc span      8207 days (22.47 yr)  
   first obs. used      1998-09-17  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51133  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:12:03  

Additional Information
 Earth MOID = 1.2102 au 
 Jupiter MOID = 2.44923 au 
 T_jup = 3.384 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457476.5 (2016-Mar-29.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1582422431159734 3.3943e-08  
q 2.200562823224957 8.896e-08 au
tp 2457256.517827563248
(2015-Aug-22.01782756)
3.9286e-05 TDB
node 74.8206762076867 4.1498e-05 deg
peri 294.266182987459 4.2673e-05 deg
i 5.012433536745696 3.0605e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      900  
   data-arc span      8207 days (22.47 yr)  
   first obs. used      1998-09-17  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51133  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:12:03  

Additional Information
 Jupiter MOID = 2.44923 au 
 T_jup = 3.384 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.152128984064334E-15 -3.00687714398231E-15 -1.220995096283675E-13 -1.319525749369347E-14 -3.593277592510807E-14 -1.503931467594271E-15
q -3.00687714398231E-15 7.913806355783306E-15 3.034626627648879E-13 3.582842511530987E-14 8.999979343348972E-14 4.046028516442583E-15
tp -1.220995096283675E-13 3.034626627648879E-13 1.543398116614287E-9 -1.515859192737352E-12 4.060209210441915E-10 -7.489846864588384E-14
node -1.319525749369347E-14 3.582842511530987E-14 -1.515859192737352E-12 1.72211302106931E-9 -1.715572282873825E-9 -2.009049015305419E-11
peri -3.593277592510807E-14 8.999979343348972E-14 4.060209210441915E-10 -1.715572282873825E-9 1.8210058616599E-9 2.001817531960485E-11
i -1.503931467594271E-15 4.046028516442583E-15 -7.489846864588384E-14 -2.009049015305419E-11 2.001817531960485E-11 9.366615990789808E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.55   n/a MPCxxxxx  

74231 (1998 SS24)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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