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120893 (1998 SN8)
Classification: Main-belt Asteroid          SPK-ID: 2120893
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1085268913667192 3.6354e-08  
a 2.203922206128433 8.6646e-09 au
q 1.964737380283233 8.3447e-08 au
i 4.392312637629568 4.88e-06 deg
node 189.0352280509274 4.6569e-05 deg
peri 64.79309903723889 5.3264e-05 deg
M 29.97243417351478 2.318e-05 deg
tp 2459101.002462516621
(2020-Sep-08.50246252)
7.7015e-05 TDB
period 1195.068551544878
3.27
7.0475e-06
1.93e-08
d
yr
n .3012379495173093 1.7765e-09 deg/d
Q 2.443107031973634 9.605e-09 au
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      9012 days (24.67 yr)  
   first obs. used      1995-10-18  
   last obs. used      2020-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54787  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:38  

Additional Information
 Earth MOID = .953626 au 
 Jupiter MOID = 2.58215 au 
 T_jup = 3.651 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457217.5 (2015-Jul-14.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1086701878873745 3.63e-08  
q 1.963810858414435 8.3324e-08 au
tp 2456711.257796148559
(2014-Feb-22.75779615)
7.9685e-05 TDB
node 189.0671423974051 4.6581e-05 deg
peri 64.68142731869199 5.327e-05 deg
i 4.39162197495671 4.8803e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      493  
   data-arc span      9012 days (24.67 yr)  
   first obs. used      1995-10-18  
   last obs. used      2020-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54787  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:38  

Additional Information
 Jupiter MOID = 2.58215 au 
 T_jup = 3.651 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.317673377187215E-15 -3.013537265594107E-15 -2.930194263750559E-13 3.280535394622352E-15 -1.031874141153537E-13 -1.713953489666015E-15
q -3.013537265594107E-15 6.942829370777266E-15 4.691685685858326E-13 -6.982368133896316E-15 1.783783411838473E-13 4.232225810252139E-15
tp -2.930194263750559E-13 4.691685685858326E-13 6.349705751380807E-9 -4.383224625281502E-11 2.065662347496807E-9 -2.733580030511958E-12
node 3.280535394622352E-15 -6.982368133896316E-15 -4.383224625281502E-11 2.169759901043818E-9 -2.176925430551736E-9 7.848901358488317E-12
peri -1.031874141153537E-13 1.783783411838473E-13 2.065662347496807E-9 -2.176925430551736E-9 2.837730937136482E-9 -8.659016968917674E-12
i -1.713953489666015E-15 4.232225810252139E-15 -2.733580030511958E-12 7.848901358488317E-12 -8.659016968917674E-12 2.381749502912201E-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 16.83   n/a E2021B55  

120893 (1998 SN8)          Discovered 1998-Sep-20 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1998 SN8 = 1995 UR30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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