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101185 (1998 SS12)
Classification: Inner Main-belt Asteroid          SPK-ID: 2101185
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05852187724269396 5.0587e-08  
a 1.936514663496216 7.2634e-09 au
q 1.823186190080413 9.9066e-08 au
i 19.85272923247324 6.076e-06 deg
node 263.9029972781233 1.3695e-05 deg
peri 190.6812549851722 4.857e-05 deg
M 297.1361038404527 4.7264e-05 deg
tp 2459172.381211042198
(2020-Nov-18.88121104)
0.00012954 TDB
period 984.3048197036339
2.69
5.5379e-06
1.516e-08
d
yr
n .3657403609060789 2.0577e-09 deg/d
Q 2.049843136912018 7.6885e-09 au
  Orbit Determination Parameters
   # obs. used (total)      656  
   data-arc span      8119 days (22.23 yr)  
   first obs. used      1998-08-25  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51742  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:28:53  

Additional Information
 Earth MOID = .840764 au 
 Jupiter MOID = 3.1552 au 
 T_jup = 3.833 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457335.5 (2015-Nov-09.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05844660951741296 5.0605e-08  
q 1.823678067173286 9.9098e-08 au
tp 2457202.788943728968
(2015-Jun-29.28894373)
0.00012657 TDB
node 263.9294755712546 1.3698e-05 deg
peri 190.4311316724344 4.8626e-05 deg
i 19.84939555737087 6.0755e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      656  
   data-arc span      8119 days (22.23 yr)  
   first obs. used      1998-08-25  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51742  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:28:53  

Additional Information
 Jupiter MOID = 3.1552 au 
 T_jup = 3.833 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.560892030705933E-15 -5.003093008906858E-15 -1.681647137599969E-12 -2.820369002684361E-14 -5.595940338994328E-13 -1.392053728008972E-14
q -5.003093008906858E-15 9.820472056158506E-15 3.465232533401767E-12 5.460464441726791E-14 1.159849364761044E-12 2.762338258606738E-14
tp -1.681647137599969E-12 3.465232533401767E-12 1.601916931874633E-8 5.90362406817536E-11 5.917190778743423E-9 2.369178201684836E-11
node -2.820369002684361E-14 5.460464441726791E-14 5.90362406817536E-11 1.876411892796537E-10 -1.534223450237449E-10 -1.380314344383698E-11
peri -5.595940338994328E-13 1.159849364761044E-12 5.917190778743423E-9 -1.534223450237449E-10 2.364468322407262E-9 2.158485537935427E-11
i -1.392053728008972E-14 2.762338258606738E-14 2.369178201684836E-11 -1.380314344383698E-11 2.158485537935427E-11 3.691202076493979E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO474886  

101185 (1998 SS12)          Discovered 1998-Sep-23 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 SS12 = 2001 VA81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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