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216218 (2006 US98)
Classification: Main-belt Asteroid          SPK-ID: 2216218
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839795408192535 5.3177e-08  
a 2.846206528631885 2.3948e-08 au
q 2.32256275841743 1.4468e-07 au
i 5.936461564661831 5.0097e-06 deg
node 85.80186233666859 4.8265e-05 deg
peri 164.7029132952709 4.9996e-05 deg
M 158.7950190529286 1.278e-05 deg
tp 2458622.871576474772
(2019-May-19.37157647)
6.0005e-05 TDB
period 1753.872597075934
4.80
2.2136e-05
6.061e-08
d
yr
n .2052600631312639 2.5906e-09 deg/d
Q 3.369850298846341 2.8354e-08 au
  Orbit Determination Parameters
   # obs. used (total)      370  
   data-arc span      6109 days (16.73 yr)  
   first obs. used      2004-03-15  
   last obs. used      2020-12-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58614  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:53:57  

Additional Information
 Earth MOID = 1.30911 au 
 Jupiter MOID = 1.67365 au 
 T_jup = 3.274 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457695.5 (2016-Nov-03.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836496002596832 5.3157e-08  
q 2.324452652598605 1.4456e-07 au
tp 2456869.773572395156
(2014-Jul-31.27357240)
6.1445e-05 TDB
node 85.80696868271485 4.827e-05 deg
peri 165.0530495167421 5.0019e-05 deg
i 5.935754311475293 5.0098e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      370  
   data-arc span      6109 days (16.73 yr)  
   first obs. used      2004-03-15  
   last obs. used      2020-12-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58614  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:53:57  

Additional Information
 Jupiter MOID = 1.67365 au 
 T_jup = 3.274 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.825663689819859E-15 -7.62439810167493E-15 -1.162570328271114E-12 -1.211692373540481E-15 -2.460306573108072E-13 1.578567470031431E-15
q -7.62439810167493E-15 2.089888765098635E-14 3.027508157393978E-12 3.43314939182753E-15 6.751242590000104E-13 -4.062071907886058E-15
tp -1.162570328271114E-12 3.027508157393978E-12 3.775542068262481E-9 -2.680251732688038E-14 8.279587696843482E-10 -2.575649213783902E-12
node -1.211692373540481E-15 3.43314939182753E-15 -2.680251732688038E-14 2.329944634078213E-9 -2.316934394494622E-9 -5.505089833068741E-11
peri -2.460306573108072E-13 6.751242590000104E-13 8.279587696843482E-10 -2.316934394494622E-9 2.501913908630929E-9 5.424310857883702E-11
i 1.578567470031431E-15 -4.062071907886058E-15 -2.575649213783902E-12 -5.505089833068741E-11 5.424310857883702E-11 2.509789814056971E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.01   n/a MPCxxxxx  
diameter diameter 2.618 km 0.362 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.123   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

216218 (2006 US98)          Discovered 2006-Oct-18 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

[ show close-approach data ]
Alternate Designations
 2006 US98 = 2004 EP85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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