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85100 (2189 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2085100
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1985249890991555 3.3767e-08  
a 2.584834451253006 1.176e-08 au
q 2.071680219994881 8.9628e-08 au
i 3.090458440671061 3.6944e-06 deg
node 246.5612919063182 8.6341e-05 deg
peri 123.9755065664428 8.7345e-05 deg
M 98.74712662703379 1.5566e-05 deg
tp 2458584.139526758689
(2019-Apr-10.63952676)
6.3766e-05 TDB
period 1517.915259782728
4.16
1.0359e-05
2.836e-08
d
yr
n .2371673897339498 1.6185e-09 deg/d
Q 3.09798868251113 1.4095e-08 au
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      15455 days (42.31 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53079  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:26:29  

Additional Information
 Earth MOID = 1.07348 au 
 Jupiter MOID = 2.38105 au 
 T_jup = 3.393 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456306.5 (2013-Jan-14.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995565220779349 3.4271e-08  
q 2.068156052146207 9.1249e-08 au
tp 2457061.575869681067
(2015-Feb-08.07586968)
5.6696e-05 TDB
node 246.834015993112 8.6744e-05 deg
peri 122.9099158753906 8.7695e-05 deg
i 3.081203229953022 3.6907e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      15455 days (42.31 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53079  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:26:29  

Additional Information
 Jupiter MOID = 2.38105 au 
 T_jup = 3.393 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.17448884067553E-15 -3.110792883547291E-15 -8.275504141158254E-13 -3.749461179323851E-15 -1.901181394883671E-13 -1.100448487184882E-15
q -3.110792883547291E-15 8.326376999031317E-15 2.451906980419351E-12 1.231569217901555E-14 5.521846788131351E-13 3.167102824141842E-15
tp -8.275504141158254E-13 2.451906980419351E-12 3.214404413592253E-9 1.022362648385768E-11 7.553336576433158E-10 2.273129864585026E-12
node -3.749461179323851E-15 1.231569217901555E-14 1.022362648385768E-11 7.524485845067971E-9 -7.511184949902079E-9 8.610563364993048E-11
peri -1.901181394883671E-13 5.521846788131351E-13 7.553336576433158E-10 -7.511184949902079E-9 7.690394000539164E-9 -8.547118834923934E-11
i -1.100448487184882E-15 3.167102824141842E-15 2.273129864585026E-12 8.610563364993048E-11 -8.547118834923934E-11 1.36216001830386E-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 15.2   n/a MPO302494  
diameter diameter 2.029 km 0.476 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.297   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85100 (2189 T-3)          Discovered 1977-Oct-16 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 2189 T-3 = 1998 WE10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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