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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06368668220380595 8.2464e-08  
a 3.393931252370961 5.7524e-08 au
q 3.177783031279647 2.8687e-07 au
i 9.632923249272997 8.3848e-06 deg
node 201.9283582075008 4.3715e-05 deg
peri 186.5735190238022 8.3055e-05 deg
M 200.4499041032224 7.7841e-05 deg
tp 2460012.656240539765
(2023-Mar-09.15624054)
0.00050736 TDB
period 2283.773284787319
6.25
5.8062e-05
1.59e-07
d
yr
n .157633860768069 4.0076e-09 deg/d
Q 3.610079473462276 6.1187e-08 au
  Orbit Determination Parameters
   # obs. used (total)      137  
   data-arc span      10423 days (28.54 yr)  
   first obs. used      1991-10-15  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46498  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:28:00  

Additional Information
 Earth MOID = 2.18238 au 
 Jupiter MOID = 1.7798 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 15.5   n/a MPO471273  

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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