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101322 (1998 SA155)
Classification: Main-belt Asteroid          SPK-ID: 2101322
[ 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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2252604905121557 2.5984e-08  
a 2.664420705660975 9.4599e-09 au
q 2.06423199057304 6.8076e-08 au
i 3.102391481002962 3.8872e-06 deg
node 214.0878373519293 6.8749e-05 deg
peri 127.5251665243759 6.9535e-05 deg
M 58.73728102922218 1.0028e-05 deg
tp 2458941.312552308399
(2020-Apr-01.81255231)		 4.3752e-05 TDB
period 1588.556356950795
4.35		 8.4601e-06
2.316e-08		 d
yr
n .2266208551083535 1.2069e-09 deg/d
Q 3.26460942074891 1.1591e-08 au
   Orbit Determination Parameters
   # obs. used (total)      844  
   data-arc span      8662 days (23.72 yr)  
   first obs. used      1997-04-30  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:36:15  

Additional Information
 Earth MOID = 1.05612 au 
 Jupiter MOID = 2.16009 au 
 T_jup = 3.345 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.55   n/a E2021B55  
diameter diameter 4.075 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.088   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101322 (1998 SA155)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 SA155 = 1997 HW17 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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