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233877 (2008 WY78)
Classification: Main-belt Asteroid          SPK-ID: 2233877
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1716109631933958 6.9286e-08  
a 2.566219614070179 2.584e-08 au
q 2.125828194333811 1.8304e-07 au
i 6.241450008189164 6.2441e-06 deg
node 110.3923288199491 5.075e-05 deg
peri 176.8415851862335 5.3082e-05 deg
M 315.8943389708878 1.6462e-05 deg
tp 2458784.463215311759
(2019-Oct-27.96321531)
6.9327e-05 TDB
period 1501.547782460851
4.11
2.2679e-05
6.209e-08
d
yr
n .2397526100767866 3.6212e-09 deg/d
Q 3.006611033806546 3.0274e-08 au
  Orbit Determination Parameters
   # obs. used (total)      287  
   data-arc span      6276 days (17.18 yr)  
   first obs. used      2002-03-05  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58921  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:32:20  

Additional Information
 Earth MOID = 1.10884 au 
 Jupiter MOID = 2.15975 au 
 T_jup = 3.403 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457047.5 (2015-Jan-25.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1707085994069385 6.9218e-08  
q 2.127674586772603 1.8258e-07 au
tp 2457284.089754521194
(2015-Sep-18.58975452)
6.7992e-05 TDB
node 110.4098112301544 5.0761e-05 deg
peri 177.0367514897576 5.3137e-05 deg
i 6.240575217692958 6.2426e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      287  
   data-arc span      6276 days (17.18 yr)  
   first obs. used      2002-03-05  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58921  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 08:32:20  

Additional Information
 Jupiter MOID = 2.15975 au 
 T_jup = 3.403 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.791095191727178E-15 -1.255226118956124E-14 -2.454776516416405E-12 -9.042947808343731E-14 -3.467975075788173E-13 -3.355260213967859E-15
q -1.255226118956124E-14 3.333573568515465E-14 6.17491223419511E-12 2.390498040302752E-13 8.243809757901301E-13 9.265385379319911E-15
tp -2.454776516416405E-12 6.17491223419511E-12 4.622863444473075E-9 5.835490571528699E-11 1.076850224215773E-9 3.851609707911941E-12
node -9.042947808343731E-14 2.390498040302752E-13 5.835490571528699E-11 2.576679727548223E-9 -2.549942718711964E-9 -1.567721418083423E-10
peri -3.467975075788173E-13 8.243809757901301E-13 1.076850224215773E-9 -2.549942718711964E-9 2.823494312030775E-9 1.567179739037977E-10
i -3.355260213967859E-15 9.265385379319911E-15 3.851609707911941E-12 -1.567721418083423E-10 1.567179739037977E-10 3.897019340246607E-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 16.3   n/a MPO437098  
diameter diameter 2.976 km 0.884 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233877 (2008 WY78)          Discovered 2008-Nov-20 by Spacewatch at Kitt Peak
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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