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46974 (1998 SA140)
Classification: Main-belt Asteroid          SPK-ID: 2046974
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1917182578143129 3.8894e-08  
a 2.589199723390294 1.3697e-08 au
q 2.092802863288606 1.0438e-07 au
i 12.12046412723901 5.1389e-06 deg
node 223.7626893155438 1.8405e-05 deg
peri 78.20266447225852 2.3608e-05 deg
M 180.3884344138915 1.6147e-05 deg
tp 2459959.739076827927
(2023-Jan-15.23907683)
7.1658e-05 TDB
period 1521.762068974435
4.17
1.2075e-05
3.306e-08
d
yr
n .2365678625717198 1.8772e-09 deg/d
Q 3.085596583491982 1.6323e-08 au
  Orbit Determination Parameters
   # obs. used (total)      864  
   data-arc span      9627 days (26.36 yr)  
   first obs. used      1994-11-05  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51639  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:54:23  

Additional Information
 Earth MOID = 1.11591 au 
 Jupiter MOID = 2.22694 au 
 T_jup = 3.363 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457870.5 (2017-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1927019050128616 3.8729e-08  
q 2.089206260795304 1.0406e-07 au
tp 2458437.601304140674
(2018-Nov-15.10130414)
6.4888e-05 TDB
node 223.7870971170473 1.8408e-05 deg
peri 78.1704469064976 2.358e-05 deg
i 12.12125680223461 5.1388e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      864  
   data-arc span      9627 days (26.36 yr)  
   first obs. used      1994-11-05  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51639  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:54:23  

Additional Information
 Jupiter MOID = 2.22694 au 
 T_jup = 3.363 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.499953043217917E-15 -4.009244181043106E-15 -1.040769364390348E-12 8.749546354128575E-15 -2.687201061780795E-13 1.517854126312947E-15
q -4.009244181043106E-15 1.082840145855755E-14 3.034745824102584E-12 -2.467483179592361E-14 7.641356469965472E-13 -3.526490992425352E-15
tp -1.040769364390348E-12 3.034745824102584E-12 4.210466597814211E-9 -2.342526372264044E-11 9.668370585799847E-10 1.368211800070912E-12
node 8.749546354128575E-15 -2.467483179592361E-14 -2.342526372264044E-11 3.388372165755772E-10 -3.36111792825458E-10 2.640413709347644E-11
peri -2.687201061780795E-13 7.641356469965472E-13 9.668370585799847E-10 -3.36111792825458E-10 5.559950393731603E-10 -2.561588401521027E-11
i 1.517854126312947E-15 -3.526490992425352E-15 1.368211800070912E-12 2.640413709347644E-11 -2.561588401521027E-11 2.640708890504853E-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 14.94   n/a MPCxxxxx  
diameter diameter 2.888 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.279   0.093 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46974 (1998 SA140)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SA140 = 2001 FJ138 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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