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85945 (1999 EB8)
Classification: Main-belt Asteroid          SPK-ID: 2085945
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1910012305327357 5.725e-08  
a 2.450598739505482 1.2316e-08 au
q 1.982531364717963 1.4498e-07 au
i 9.155698490157606 5.8176e-06 deg
node 21.19041529901776 3.2256e-05 deg
peri 327.727458084799 3.4772e-05 deg
M 48.71206863046567 1.5437e-05 deg
tp 2458810.898919611622
(2019-Nov-23.39891961)
5.9362e-05 TDB
period 1401.221316582044
3.84
1.0563e-05
2.892e-08
d
yr
n .2569187292112691 1.9368e-09 deg/d
Q 2.918666114293 1.4669e-08 au
  Orbit Determination Parameters
   # obs. used (total)      520  
   data-arc span      7540 days (20.64 yr)  
   first obs. used      1999-03-12  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56144  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:20:18  

Additional Information
 Earth MOID = .983883 au 
 Jupiter MOID = 2.52989 au 
 T_jup = 3.453 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456768.5 (2014-Apr-21.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .19249923110498 5.721e-08  
q 1.978019922985276 1.4502e-07 au
tp 2457410.371483244214
(2016-Jan-22.87148324)
5.4243e-05 TDB
node 21.23770729526981 3.221e-05 deg
peri 327.8663547774871 3.4682e-05 deg
i 9.16583287999123 5.823e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      520  
   data-arc span      7540 days (20.64 yr)  
   first obs. used      1999-03-12  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56144  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:20:18  

Additional Information
 Jupiter MOID = 2.52989 au 
 T_jup = 3.453 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.272997041686326E-15 -8.280614628623832E-15 -3.437065981721209E-13 5.797825223584607E-15 -1.110195341671667E-13 -7.178945713837336E-15
q -8.280614628623832E-15 2.102952896774019E-14 1.023059823469271E-12 -1.294226355008226E-14 3.041368772081536E-13 1.865162419739775E-14
tp -3.437065981721209E-13 1.023059823469271E-12 2.942335051482692E-9 2.40105183857681E-11 7.167189687838736E-10 -8.048702781741915E-13
node 5.797825223584607E-15 -1.294226355008226E-14 2.40105183857681E-11 1.03745391099972E-9 -1.017712320089417E-9 -2.28343107895475E-11
peri -1.110195341671667E-13 3.041368772081536E-13 7.167189687838736E-10 -1.017712320089417E-9 1.202820891133965E-9 2.239906709438505E-11
i -7.178945713837336E-15 1.865162419739775E-14 -8.048702781741915E-13 -2.28343107895475E-11 2.239906709438505E-11 3.390762329169862E-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 15.5   n/a MPO436376  

85945 (1999 EB8)          Discovered 1999-Mar-12 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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