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100172 (1993 WL)
Classification: Main-belt Asteroid          SPK-ID: 2100172
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0973825267862196 9.4571e-08  
a 2.526715461348921 1.6531e-08 au
q 2.280657525252954 2.4204e-07 au
i 3.751389049530252 4.3546e-06 deg
node 244.9474097012897 9.0272e-05 deg
peri 328.7878197573947 0.00010307 deg
M 98.52107709413266 5.4811e-05 deg
tp 2458799.024004099765
(2019-Nov-11.52400410)
0.00022227 TDB
period 1467.009525139389
4.02
1.4397e-05
3.942e-08
d
yr
n .245397179657572 2.4082e-09 deg/d
Q 2.772773397444887 1.8141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      609  
   data-arc span      9239 days (25.30 yr)  
   first obs. used      1993-11-17  
   last obs. used      2019-03-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55721  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:01:47  

Additional Information
 Earth MOID = 1.27385 au 
 Jupiter MOID = 2.20179 au 
 T_jup = 3.443 
[ 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 15.8   n/a MPO426629  

100172 (1993 WL)          Discovered 1993-Nov-17 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
1976-Jun-23 23:47 < 00:01 Iris 0.0401434837305199 0.0401344258116755 0.0401525418137076 6.51458512582545 6.51458510384325 2442953.491105298 0.974575539075378 469.770188289652 63.737228767683 16.1396117276972 28919.9351018223 T 16 CATAB v2.0f-lin.ifort 2020-Feb-24 01:02:04 2020-Feb-24 01:02

Alternate Designations
 1993 WL = 1999 DL9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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