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100649 (1997 WF4)
Classification: Main-belt Asteroid          SPK-ID: 2100649
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08263097142190944 3.8726e-08  
a 2.647893240604901 1.8566e-08 au
q 2.42909524991221 1.0194e-07 au
i 2.12990959509274 5.1795e-06 deg
node 221.5904158266044 0.00014865 deg
peri 218.1039960598299 0.00015498 deg
M 97.23911195927604 4.3938e-05 deg
tp 2458775.403414570758
(2019-Oct-18.90341457)
0.00019051 TDB
period 1573.798522744823
4.31
1.6552e-05
4.532e-08
d
yr
n .2287459257314164 2.4058e-09 deg/d
Q 2.866691231297592 2.01e-08 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      8109 days (22.20 yr)  
   first obs. used      1997-10-23  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5586  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:57:57  

Additional Information
 Earth MOID = 1.44468 au 
 Jupiter MOID = 2.30915 au 
 T_jup = 3.386 
[ 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 16.6   n/a MPO412741  

100649 (1997 WF4)          Discovered 1997-Nov-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1997 WF4 = 2003 BZ32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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