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120750 (1997 WX19)
Classification: Main-belt Asteroid          SPK-ID: 2120750
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0808179921170305 5.2062e-08  
a 2.540649351038164 1.6268e-08 au
q 2.335319171813823 1.2755e-07 au
i 16.11452067431779 4.4933e-06 deg
node 93.22799954415063 2.7827e-05 deg
peri 161.1427216369148 6.798e-05 deg
M 53.96606113215832 6.0762e-05 deg
tp 2458778.765259559556
(2019-Oct-22.26525956)
0.00025007 TDB
period 1479.161252163217
4.05
1.4207e-05
3.89e-08
d
yr
n .2433811725892047 2.3376e-09 deg/d
Q 2.745979530262504 1.7583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      515  
   data-arc span      8362 days (22.89 yr)  
   first obs. used      1997-11-24  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62875  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:03  

Additional Information
 Earth MOID = 1.32383 au 
 Jupiter MOID = 2.3442 au 
 T_jup = 3.386 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457335.5 (2015-Nov-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .079671836069235 5.1976e-08  
q 2.337716092887011 1.2694e-07 au
tp 2457300.751004883823
(2015-Oct-05.25100488)
0.00025781 TDB
node 93.2464668287738 2.783e-05 deg
peri 161.4141113982831 6.8931e-05 deg
i 16.11378107212762 4.4939e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      515  
   data-arc span      8362 days (22.89 yr)  
   first obs. used      1997-11-24  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62875  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:03  

Additional Information
 Jupiter MOID = 2.3442 au 
 T_jup = 3.386 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.70154496582223E-15 -6.559070083338086E-15 -7.899037348277067E-12 -1.063670345972787E-13 -1.919724965329246E-12 -4.178827111309112E-15
q -6.559070083338086E-15 1.611454214619667E-14 1.901786162612557E-11 2.559385186640203E-13 4.620949113701021E-12 1.093073051312073E-14
tp -7.899037348277067E-12 1.901786162612557E-11 6.646379468809567E-8 7.26455387783474E-10 1.635905008872426E-8 1.276063999959822E-13
node -1.063670345972787E-13 2.559385186640203E-13 7.26455387783474E-10 7.745053193283554E-10 -5.586148423238545E-10 -1.409847119887073E-11
peri -1.919724965329246E-12 4.620949113701021E-12 1.635905008872426E-8 -5.586148423238545E-10 4.751456667578545E-9 1.367160235987753E-11
i -4.178827111309112E-15 1.093073051312073E-14 1.276063999959822E-13 -1.409847119887073E-11 1.367160235987753E-11 2.019518864967325E-11

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 15.6   n/a MPO475060  

120750 (1997 WX19)          Discovered 1997-Nov-24 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1997 WX19 = 1999 LN8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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