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39887 (1998 ED13)
Classification: Main-belt Asteroid          SPK-ID: 2039887
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .161305630721137 3.8406e-08  
a 2.272002683382176 8.5775e-09 au
q 1.905515857539099 8.6364e-08 au
i 3.488271893801787 4.1117e-06 deg
node 52.10687985891475 6.8075e-05 deg
peri 345.3204555080472 6.9321e-05 deg
M 297.9786166760709 1.6197e-05 deg
tp 2459216.001667295032
(2021-Jan-01.50166730)
5.703e-05 TDB
period 1250.868588677215
3.42
7.0836e-06
1.939e-08
d
yr
n .2878000161317485 1.6298e-09 deg/d
Q 2.638489509225254 9.9611e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1395  
   data-arc span      20700 days (56.67 yr)  
   first obs. used      1962-11-26  
   last obs. used      2019-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50761  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:38:01  

Additional Information
 Earth MOID = .913137 au 
 Jupiter MOID = 2.77149 au 
 T_jup = 3.592 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456144.5 (2012-Aug-05.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1617801862858961 3.8497e-08  
q 1.904439842418879 8.6692e-08 au
tp 2456714.546338521089
(2014-Feb-26.04633852)
4.9442e-05 TDB
node 52.19689286320681 6.7952e-05 deg
peri 345.2156236270516 6.9189e-05 deg
i 3.492048374347172 4.115e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1395  
   data-arc span      20700 days (56.67 yr)  
   first obs. used      1962-11-26  
   last obs. used      2019-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50761  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:38:01  

Additional Information
 Jupiter MOID = 2.77149 au 
 T_jup = 3.592 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.482031198096742E-15 -3.326652375401686E-15 -2.256272194668906E-14 2.905425257521302E-15 -4.105118718171363E-14 2.608634193622452E-16
q -3.326652375401686E-15 7.51554853145735E-15 2.009269782236465E-13 -6.108371093639681E-15 1.250821247104668E-13 -5.70737807884866E-16
tp -2.256272194668906E-14 2.009269782236465E-13 2.444527736485917E-9 -6.244808671162177E-13 6.570223912297423E-10 2.980370023664374E-13
node 2.905425257521302E-15 -6.108371093639681E-15 -6.244808671162177E-13 4.617424820693242E-9 -4.608738867585911E-9 -3.836721578912453E-11
peri -4.105118718171363E-14 1.250821247104668E-13 6.570223912297423E-10 -4.608738867585911E-9 4.787109741203787E-9 3.836743871869356E-11
i 2.608634193622452E-16 -5.70737807884866E-16 2.980370023664374E-13 -3.836721578912453E-11 3.836743871869356E-11 1.693323501518032E-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 14.5   n/a MPO474256  
diameter diameter 3.361 km 0.644 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.288   0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

39887 (1998 ED13)          Discovered 1998-Mar-01 by Elst, E. W. at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 ED13 = 1962 WT = 1986 VY6 = 2000 SY160 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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