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101231 (1998 SZ74)
Classification: Main-belt Asteroid          SPK-ID: 2101231
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2039498700337447 3.111e-08  
a 2.662678460860442 1.0878e-08 au
q 2.119625534826303 8.3474e-08 au
i 3.446956977047763 3.8103e-06 deg
node 119.8747422608871 5.8861e-05 deg
peri 201.9996259030223 5.9903e-05 deg
M 79.97624245901653 1.0257e-05 deg
tp 2458847.938399064418
(2019-Dec-30.43839906)
4.4333e-05 TDB
period 1586.998493982135
4.34
9.7256e-06
2.663e-08
d
yr
n .2268433154568907 1.3902e-09 deg/d
Q 3.20573138689458 1.3097e-08 au
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      8700 days (23.82 yr)  
   first obs. used      1997-04-06  
   last obs. used      2021-01-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49826  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:49  

Additional Information
 Earth MOID = 1.1055 au 
 Jupiter MOID = 2.1194 au 
 T_jup = 3.352 
[ show covariance matrix ]

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 15.7   n/a MPO436472  
diameter diameter 4.041 km 0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101231 (1998 SZ74)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 SZ74 = 2019 RV47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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