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160180 (2001 WH77)
Classification: Main-belt Asteroid          SPK-ID: 2160180
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09941688172612821 6.1983e-08  
a 2.687233889307794 2.2679e-08 au
q 2.420077475564038 1.7436e-07 au
i 8.324774291137015 4.8244e-06 deg
node 65.41577403836837 4.1522e-05 deg
peri 82.31902848006098 5.2745e-05 deg
M 37.88498259313891 2.9296e-05 deg
tp 2459031.174947113740
(2020-Jun-30.67494711)
0.00013101 TDB
period 1609.002165678517
4.41
2.0369e-05
5.577e-08
d
yr
n .223741153168795 2.8324e-09 deg/d
Q 2.954390303051551 2.4933e-08 au
  Orbit Determination Parameters
   # obs. used (total)      338  
   data-arc span      7937 days (21.73 yr)  
   first obs. used      1999-05-19  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57157  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:00:15  

Additional Information
 Earth MOID = 1.44882 au 
 Jupiter MOID = 2.09076 au 
 T_jup = 3.351 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457193.5 (2015-Jun-20.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09977267472113592 6.2681e-08  
q 2.41881125817075 1.764e-07 au
tp 2457425.761884069957
(2016-Feb-07.26188407)
0.00013098 TDB
node 65.47706017782404 4.1543e-05 deg
peri 83.18909760570368 5.2401e-05 deg
i 8.323353898883095 4.8225e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      338  
   data-arc span      7937 days (21.73 yr)  
   first obs. used      1999-05-19  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57157  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:00:15  

Additional Information
 Jupiter MOID = 2.09076 au 
 T_jup = 3.351 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.928893764033308E-15 -1.099135440915666E-14 4.106931931490828E-12 3.417532799436252E-14 1.065844696432919E-12 -1.170807215552565E-14
q -1.099135440915666E-14 3.111680135564655E-14 -1.157274844629048E-11 -9.501039684168009E-14 -3.020129602332836E-12 3.377995615273604E-14
tp 4.106931931490828E-12 -1.157274844629048E-11 1.715506461684967E-8 4.263927901273915E-11 4.225947066681383E-9 -1.151303635320082E-11
node 3.417532799436252E-14 -9.501039684168009E-14 4.263927901273915E-11 1.725786854713455E-9 -1.696348758744354E-9 -4.947600666525985E-11
peri 1.065844696432919E-12 -3.020129602332836E-12 4.225947066681383E-9 -1.696348758744354E-9 2.745837223159289E-9 4.585888945731845E-11
i -1.170807215552565E-14 3.377995615273604E-14 -1.151303635320082E-11 -4.947600666525985E-11 4.585888945731845E-11 2.325606908509889E-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 16.26   n/a MPCxxxxx  

160180 (2001 WH77)          Discovered 2001-Nov-20 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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