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442175 (2010 WR74)
Classification: Main-belt Asteroid          SPK-ID: 2442175
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1057617552252675 9.2696e-08  
a 3.069295841781733 5.0569e-08 au
q 2.744681726249282 3.1514e-07 au
i 11.48045908784654 6.6807e-06 deg
node 120.4983651679643 2.7003e-05 deg
peri 236.2324074851315 4.0069e-05 deg
M 319.3704045715778 2.6584e-05 deg
tp 2459222.164706650377
(2021-Jan-07.66470665)
0.00014377 TDB
period 1964.068151619161
5.38
4.854e-05
1.329e-07
d
yr
n .1832930286574929 4.5299e-09 deg/d
Q 3.393909957314184 5.5918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      6379 days (17.46 yr)  
   first obs. used      2003-05-02  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60222  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:48:33  

Additional Information
 Earth MOID = 1.75833 au 
 Jupiter MOID = 2.0409 au 
 T_jup = 3.192 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458199.5 (2018-Mar-22.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1085207731291799 9.2714e-08  
q 2.732494066829317 3.1556e-07 au
tp 2457263.531100413368
(2015-Aug-29.03110041)
0.00015666 TDB
node 120.6087853411667 2.7096e-05 deg
peri 236.8494267655738 3.9534e-05 deg
i 11.46538926098525 6.6716e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      188  
   data-arc span      6379 days (17.46 yr)  
   first obs. used      2003-05-02  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60222  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:48:33  

Additional Information
 Jupiter MOID = 2.0409 au 
 T_jup = 3.192 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.59585214548131E-15 -2.908243514005313E-14 3.257245253165541E-12 7.262713751942719E-14 6.523444646511527E-13 -4.801293781619234E-15
q -2.908243514005313E-14 9.957516213656905E-14 -1.348218509356814E-11 -2.483105689195132E-13 -2.554603857076082E-12 1.744293781930016E-14
tp 3.257245253165541E-12 -1.348218509356814E-11 2.454296849567263E-8 6.172538673300587E-11 4.513256802986897E-9 1.502892002987567E-11
node 7.262713751942719E-14 -2.483105689195132E-13 6.172538673300587E-11 7.341903988971727E-10 -7.06668818916401E-10 4.497094143647196E-11
peri 6.523444646511527E-13 -2.554603857076082E-12 4.513256802986897E-9 -7.06668818916401E-10 1.562932898661497E-9 -4.112053620108604E-11
i -4.801293781619234E-15 1.744293781930016E-14 1.502892002987567E-11 4.497094143647196E-11 -4.112053620108604E-11 4.451012698114339E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO437719  

442175 (2010 WR74)          Discovered 2003-May-02 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2010 WR74 = 2012 BJ138 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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