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390191 (2012 WT22)
Classification: Main-belt Asteroid          SPK-ID: 2390191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05393136686742828 6.7035e-08  
a 2.679477655270802 3.135e-08 au
q 2.534969762831316 1.8363e-07 au
i 6.290674447356476 7.0707e-06 deg
node 48.68406355582317 5.7106e-05 deg
peri 349.7928367187693 7.9752e-05 deg
M 281.136563649799 5.829e-05 deg
tp 2459351.451281462942
(2021-May-16.95128146)
0.00026147 TDB
period 1602.041036680454
4.39
2.8116e-05
7.698e-08
d
yr
n .2247133448878103 3.9438e-09 deg/d
Q 2.823985547710288 3.3041e-08 au
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      6650 days (18.21 yr)  
   first obs. used      2001-03-18  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55624  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:31:19  

Additional Information
 Earth MOID = 1.54279 au 
 Jupiter MOID = 2.40577 au 
 T_jup = 3.366 
[ 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 16.5   n/a MPO434436  

390191 (2012 WT22)          Discovered 2003-Oct-21 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-03-21

[ show close-approach data ]
Alternate Designations
 2012 WT22 = 2010 NP104 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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