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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05393129341910536 6.7268e-08  
a 2.679477656721752 3.1438e-08 au
q 2.534969961007155 1.8407e-07 au
i 6.290668061997378 7.0799e-06 deg
node 48.68405002317094 5.7647e-05 deg
peri 349.7928518470963 8.0359e-05 deg
M 281.1365595989599 5.8516e-05 deg
tp 2459351.451299774700
(2021-May-16.95129977)
0.00026243 TDB
period 1602.041037981724
4.39
2.8195e-05
7.719e-08
d
yr
n .2247133447052852 3.9548e-09 deg/d
Q 2.82398535243635 3.3134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   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      .55989  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:06:45  

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

[ 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-Jan-27 07:56 00:02 Eunom 0.040925517262989 0.0409237824580202 0.0409272555061764 5.22962163071076 5.229621565122 2442804.830278463 2.47490396604611 820.71590078318 59.6656804116872 -85.6095914931277 102248.139455381 T 11 CATAB v2.0f-lin.ifort 2019-Sep-24 07:06:47 2019-Sep-24 07:06
2000-Nov-16 15:09 00:01 Hebe 0.044360603662179 0.0443555023359613 0.0443657052662008 5.08092485028509 5.08092482270363 2451865.131147803 1.46847303133684 311.225251992548 56.3385388528856 35.8911570146278 71154.052060747 T 11 CATAB v2.0f-lin.ifort 2019-Sep-24 07:06:47 2019-Sep-24 07:06

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