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101181 (1998 SZ9)
Classification: Main-belt Asteroid          SPK-ID: 2101181
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 .187025091777897 5.4634e-08  
a 2.264661920874639 1.138e-08 au
q 1.841113317277151 1.2218e-07 au
i 24.89604670118495 6.4384e-06 deg
node 248.1530886203866 1.178e-05 deg
peri 193.3801541757436 1.8476e-05 deg
M 62.13671232500348 1.3655e-05 deg
tp 2458785.643120689748
(2019-Oct-29.14312069)
4.6745e-05 TDB
period 1244.811217998193
3.41
9.3826e-06
2.569e-08
d
yr
n .2892004785905799 2.1798e-09 deg/d
Q 2.688210524472126 1.3508e-08 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      8921 days (24.42 yr)  
   first obs. used      1995-11-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44941  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:58:59  

Additional Information
 Earth MOID = .860509 au 
 Jupiter MOID = 2.6238 au 
 T_jup = 3.473 
[ 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 14.9   n/a MPO453465  

101181 (1998 SZ9)          Discovered 1998-Sep-21 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 SZ9 = 1995 WC44 = 2003 AG4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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