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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1157308128654027 6.7055e-08  
a 2.451468095695533 1.3862e-08 au
q 2.167757700267089 1.6468e-07 au
i 5.346267614911802 3.8787e-06 deg
node 98.27388197737538 8.795e-05 deg
peri 327.3997460513683 9.732e-05 deg
M 132.110983241049 4.1909e-05 deg
tp 2458486.013220672453
(2019-Jan-02.51322067)
0.00016259 TDB
period 1401.967012992207
3.84
1.1891e-05
3.256e-08
d
yr
n .2567820759431813 2.178e-09 deg/d
Q 2.735178491123978 1.5466e-08 au
  Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      8925 days (24.44 yr)  
   first obs. used      1995-11-16  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60202  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:28:51  

Additional Information
 Earth MOID = 1.18385 au 
 Jupiter MOID = 2.52291 au 
 T_jup = 3.480 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457225.5 (2015-Jul-22.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144927118720417 6.623e-08  
q 2.171469046551146 1.6216e-07 au
tp 2457084.510591700847
(2015-Mar-03.01059170)
0.0001646 TDB
node 98.33845128196448 8.7903e-05 deg
peri 327.694397794987 9.7578e-05 deg
i 5.346698314127339 3.8774e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      8925 days (24.44 yr)  
   first obs. used      1995-11-16  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60202  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:28:51  

Additional Information
 Jupiter MOID = 2.52291 au 
 T_jup = 3.480 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.386386598312924E-15 -1.070922282796914E-14 -8.71506265198744E-12 -2.250319307134964E-13 -2.231121589944515E-12 -5.393462492502244E-15
q -1.070922282796914E-14 2.629662403923368E-14 2.139352219379517E-11 5.519061043883307E-13 5.479930572897651E-12 1.330086738232271E-14
tp -8.71506265198744E-12 2.139352219379517E-11 2.70947825144523E-8 5.699141685283208E-10 7.100865287271357E-9 1.185064388013253E-11
node -2.250319307134964E-13 5.519061043883307E-13 5.699141685283208E-10 7.726921115332301E-9 -7.532356529614547E-9 -9.576047001777433E-11
peri -2.231121589944515E-12 5.479930572897651E-12 7.100865287271357E-9 -7.532356529614547E-9 9.521514489229471E-9 9.870614946124045E-11
i -5.393462492502244E-15 1.330086738232271E-14 1.185064388013253E-11 -9.576047001777433E-11 9.870614946124045E-11 1.503425473692568E-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

[ 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
2148-Mar-22 03:23 00:02 Eunom 0.0432215832058408 0.0431881054311486 0.0432550820032488 5.64848230442583 5.64848224692667 2505681.641277088 1.86736952338605 2246.99924659127 84.4945452166638 42.0643490603302 51284.9088313635 T 13 CATAB v2.0f-lin.ifort 2020-May-21 20:29:03 2020-May-21 20:29

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