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JPL Small-Body Database Browser
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312705 (2010 PW21)
Classification: Outer Main-belt Asteroid          SPK-ID: 2312705
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06368031535474722 8.2441e-08  
a 3.394100336693291 6.4378e-08 au
q 3.177962956907009 2.8795e-07 au
i 9.632736684544671 8.5064e-06 deg
node 201.930133458854 5.364e-05 deg
peri 186.8832524509531 9.2324e-05 deg
M 137.0465359529221 7.9734e-05 deg
tp 2457731.037202986834
(2016-Dec-08.53720299)
0.00049865 TDB
period 2283.943951945368
6.25
6.4982e-05
1.779e-07
d
yr
n .1576220816160427 4.4846e-09 deg/d
Q 3.610237716479574 6.8478e-08 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      10027 days (27.45 yr)  
   first obs. used      1991-10-15  
   last obs. used      2019-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48932  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:43:31  

Additional Information
 Earth MOID = 2.18194 au 
 Jupiter MOID = 1.78054 au 
 T_jup = 3.122 
[ 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 15.4   n/a MPO455305  

312705 (2010 PW21)          Discovered 2004-Nov-04 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2010 PW21 = 2007 EQ174 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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