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85148 (1981 EH39)
Classification: Main-belt Asteroid          SPK-ID: 2085148
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1279674622524836 4.1371e-08  
a 2.428215850457399 1.1988e-08 au
q 2.117483230273109 1.0032e-07 au
i 2.930336454502501 5.5997e-06 deg
node 317.6810863597497 0.00010195 deg
peri 285.5636401318525 0.00010525 deg
M 75.18962972518921 2.4871e-05 deg
tp 2458711.841196737886
(2019-Aug-16.34119674)
9.5555e-05 TDB
period 1382.067840394591
3.78
1.0235e-05
2.802e-08
d
yr
n .2604792539686166 1.9289e-09 deg/d
Q 2.738948470641688 1.3522e-08 au
  Orbit Determination Parameters
   # obs. used (total)      402  
   data-arc span      14448 days (39.56 yr)  
   first obs. used      1981-03-02  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66011  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 19:09:14  

Additional Information
 Earth MOID = 1.10674 au 
 Jupiter MOID = 2.28484 au 
 T_jup = 3.496 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457397.5 (2016-Jan-10.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1271089014892646 4.1443e-08  
q 2.119639792866419 1.0032e-07 au
tp 2457329.528884356918
(2015-Nov-03.02888436)
9.7397e-05 TDB
node 317.7340266401782 0.00010201 deg
peri 285.5867587697016 0.00010535 deg
i 2.929251265692832 5.5983e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      402  
   data-arc span      14448 days (39.56 yr)  
   first obs. used      1981-03-02  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66011  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 19:09:14  

Additional Information
 Jupiter MOID = 2.28484 au 
 T_jup = 3.496 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.717518716730744E-15 -4.135053779346528E-15 -1.915560352224254E-12 2.458092669298169E-15 -5.109369139765003E-13 -2.373881528321892E-15
q -4.135053779346528E-15 1.006324953482542E-14 4.486612928715103E-12 -5.793360436420389E-15 1.197465847523138E-12 5.81833747610822E-15
tp -1.915560352224254E-12 4.486612928715103E-12 9.486081927071652E-9 -3.094828752119293E-12 2.592500196773742E-9 6.229478853193813E-12
node 2.458092669298169E-15 -5.793360436420389E-15 -3.094828752119293E-12 1.040564366598467E-8 -1.039284123115406E-8 2.726571825891048E-10
peri -5.109369139765003E-13 1.197465847523138E-12 2.592500196773742E-9 -1.039284123115406E-8 1.109881816331612E-8 -2.706352147473281E-10
i -2.373881528321892E-15 5.81833747610822E-15 6.229478853193813E-12 2.726571825891048E-10 -2.706352147473281E-10 3.134097053685752E-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 16.7   n/a MPO240809  

85148 (1981 EH39)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1981 EH39 = 2000 FN62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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