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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08263097321041712 3.8726e-08  
a 2.647893242349725 1.8566e-08 au
q 2.42909524677708 1.0194e-07 au
i 2.129909557682426 5.1795e-06 deg
node 221.5904154619312 0.00014865 deg
peri 218.1039962007545 0.00015498 deg
M 97.23911222815882 4.3938e-05 deg
tp 2458775.403412975119
(2019-Oct-18.90341297)
0.00019051 TDB
period 1573.798524300399
4.31
1.6552e-05
4.532e-08
d
yr
n .2287459255053189 2.4058e-09 deg/d
Q 2.866691237922369 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:33:08  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1951-May-09 11:21 00:03 Hebe 0.025214595324094 0.0252083905995967 0.0252208131792579 5.54791504778898 5.54791500334881 2433775.973167494 3.14255781757342 971.961008691477 54.2767877165851 -71.6916419937392 65966.6510099472 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 15:33:10 2021-Apr-13 15:33
2093-Nov-28 02:40 00:03 Juno 0.0426125649891518 0.0425913753247106 0.0426337605150833 4.88404928941345 4.88404923095756 2485844.611145729 2.74748149228338 1318.12604171662 61.8683540233979 36.80611496831 61809.7330942658 T 15 CATAB v2.0f-lin.ifort 2021-Apr-13 15:33:10 2021-Apr-13 15:33

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