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295878 (2008 WB44)
Classification: Main-belt Asteroid          SPK-ID: 2295878
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08873642664218431 7.2671e-08  
a 2.757610121864259 3.3014e-08 au
q 2.512909653577707 1.9859e-07 au
i 3.431692303439689 8.3079e-06 deg
node 258.6349836308968 0.00014309 deg
peri 240.5972222334561 0.00015215 deg
M 121.9234059967309 5.1144e-05 deg
tp 2458434.022963678814
(2018-Nov-11.52296368)
0.00023546 TDB
period 1672.621687431329
4.58
3.0037e-05
8.224e-08
d
yr
n .2152309770375258 3.8651e-09 deg/d
Q 3.002310590150812 3.5943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      7041 days (19.28 yr)  
   first obs. used      1999-12-31  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60675  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:37:46  

Additional Information
 Earth MOID = 1.52844 au 
 Jupiter MOID = 2.03013 au 
 T_jup = 3.335 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457023.5 (2015-Jan-01.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08983283800306549 7.2507e-08  
q 2.507219000765303 1.9888e-07 au
tp 2456759.399407362512
(2014-Apr-11.89940736)
0.00022842 TDB
node 258.6606533064596 0.00014307 deg
peri 239.5920003154743 0.00015195 deg
i 3.432932268253104 8.3116e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      7041 days (19.28 yr)  
   first obs. used      1999-12-31  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60675  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 13:37:46  

Additional Information
 Jupiter MOID = 2.03013 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.257335991407783E-15 -1.425238299259129E-14 9.019781643377578E-13 7.7931497428055E-15 1.981083631386061E-13 -3.568678828441242E-15
q -1.425238299259129E-14 3.955230060466665E-14 -2.015611755859536E-12 -2.310801017207708E-14 -4.095452032689151E-13 1.0945252035438E-14
tp 9.019781643377578E-13 -2.015611755859536E-12 5.217719398598656E-8 5.641205082403805E-11 1.177670496029385E-8 -3.488123241643879E-12
node 7.7931497428055E-15 -2.310801017207708E-14 5.641205082403805E-11 2.046867160701976E-8 -2.041835936711165E-8 -6.873812446120739E-11
peri 1.981083631386061E-13 -4.095452032689151E-13 1.177670496029385E-8 -2.041835936711165E-8 2.30890669716581E-8 6.784694815976011E-11
i -3.568678828441242E-15 1.0945252035438E-14 -3.488123241643879E-12 -6.873812446120739E-11 6.784694815976011E-11 6.908218931458795E-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 17.1   n/a MPO427597  

295878 (2008 WB44)          Discovered 2008-Nov-17 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Alternate Designations
 2008 WB44 = 2006 KM129 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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