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312950 (1995 WP11)
Classification: Main-belt Asteroid          SPK-ID: 2312950
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .115730778840418 6.8633e-08  
a 2.451468102112325 1.4898e-08 au
q 2.167757789352425 1.676e-07 au
i 5.346265286033393 4.1771e-06 deg
node 98.27396161884742 8.8504e-05 deg
peri 327.3996397761988 0.0001021 deg
M 132.1110024621359 4.8543e-05 deg
tp 2458486.013143798732
(2019-Jan-02.51314380)
0.00018938 TDB
period 1401.967018496744
3.84
1.278e-05
3.499e-08
d
yr
n .256782074934979 2.3407e-09 deg/d
Q 2.735178414872226 1.6622e-08 au
  Orbit Determination Parameters
   # obs. used (total)      196  
   data-arc span      8448 days (23.13 yr)  
   first obs. used      1995-11-16  
   last obs. used      2019-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61484  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:24:46  

Additional Information
 Earth MOID = 1.18385 au 
 Jupiter MOID = 2.52291 au 
 T_jup = 3.480 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456976.5 (2014-Nov-15.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144141538106575 6.7709e-08  
q 2.171454326883792 1.6497e-07 au
tp 2457084.312976242233
(2015-Mar-02.81297624)
0.0001946 TDB
node 98.3388667416438 8.8453e-05 deg
peri 327.6308348242496 0.00010247 deg
i 5.346877158238886 4.1761e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      196  
   data-arc span      8448 days (23.13 yr)  
   first obs. used      1995-11-16  
   last obs. used      2019-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61484  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:24:46  

Additional Information
 Jupiter MOID = 2.52291 au 
 T_jup = 3.480 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.584520745586527E-15 -1.113455742100146E-14 -1.015300319527932E-11 -2.378539056564452E-13 -2.649479389553493E-12 -9.815010252030579E-15
q -1.113455742100146E-14 2.721636375066835E-14 2.442201364464607E-11 5.74529914296981E-13 6.364772619652891E-12 2.39568909053764E-14
tp -1.015300319527932E-11 2.442201364464607E-11 3.786927469474094E-8 7.112266280690864E-10 1.019003212676189E-8 2.615409527572918E-11
node -2.378539056564452E-13 5.74529914296981E-13 7.112266280690864E-10 7.823893608225236E-9 -7.586101625737841E-9 -1.050397220261484E-10
peri -2.649479389553493E-12 6.364772619652891E-12 1.019003212676189E-8 -7.586101625737841E-9 1.050060551279678E-8 1.120705067000274E-10
i -9.815010252030579E-15 2.39568909053764E-14 2.615409527572918E-11 -1.050397220261484E-10 1.120705067000274E-10 1.743992531899468E-11

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 17.2   n/a MPO455307  

312950 (1995 WP11)          Discovered 1995-Nov-16 by Spacewatch at Kitt Peak
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

[ show close-approach data ]
Alternate Designations
 1995 WP11 = 2008 CY215 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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