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JPL Small-Body Database Browser
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469328 (1999 WR22)
Classification: Main-belt Asteroid          SPK-ID: 2469328
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2037874605292833 1.2858e-07  
a 2.223623772581326 2.796e-08 au
q 1.770477130794433 3.0211e-07 au
i 2.815498244820042 1.4481e-05 deg
node 232.0828826166679 0.00021414 deg
peri 87.0769361901658 0.00023508 deg
M 143.1187650854294 6.947e-05 deg
tp 2458519.013107407289
(2019-Feb-04.51310741)
0.00023164 TDB
period 1211.128961530028
3.32
2.2843e-05
6.254e-08
d
yr
n .2972433253889078 5.6064e-09 deg/d
Q 2.676770414368219 3.3658e-08 au
  Orbit Determination Parameters
   # obs. used (total)      39  
   data-arc span      5686 days (15.57 yr)  
   first obs. used      1999-11-17  
   last obs. used      2015-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49467  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 07:43:42  

Additional Information
 Earth MOID = .76023 au 
 Jupiter MOID = 2.63236 au 
 T_jup = 3.618 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.8   n/a E2015L36  

469328 (1999 WR22)          Discovered 1999-Nov-17 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-08-22

Alternate Designations
 1999 WR22 = 2002 RK174 = 2012 SX43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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