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20448 (1999 JM96)
Classification: Main-belt Asteroid          SPK-ID: 2020448
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2196030343168046 4.0146e-08  
a 2.526086371731443 8.9119e-09 au
q 1.971350139552891 1.0117e-07 au
i 14.68648837281404 5.1666e-06 deg
node 91.92495331341983 2.0562e-05 deg
peri 250.408164606984 2.6456e-05 deg
M 99.91812443836001 1.6999e-05 deg
tp 2458989.483052249177
(2020-May-19.98305225)
6.9272e-05 TDB
period 1466.461685644318
4.01
7.7604e-06
2.125e-08
d
yr
n .2454888549248576 1.2991e-09 deg/d
Q 3.080822603909996 1.0869e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1461  
   data-arc span      9418 days (25.79 yr)  
   first obs. used      1995-06-25  
   last obs. used      2021-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50795  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:52:25  

Additional Information
 Earth MOID = 1.01519 au 
 Jupiter MOID = 2.42489 au 
 T_jup = 3.375 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457683.5 (2016-Oct-22.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2205767409573313 4.0444e-08  
q 1.968410011100706 1.0216e-07 au
tp 2457524.603089575293
(2016-May-16.10308958)
6.9826e-05 TDB
node 91.93720560849117 2.0575e-05 deg
peri 250.6207022293037 2.643e-05 deg
i 14.68471845655732 5.1698e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1461  
   data-arc span      9418 days (25.79 yr)  
   first obs. used      1995-06-25  
   last obs. used      2021-04-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50795  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:52:25  

Additional Information
 Jupiter MOID = 2.42489 au 
 T_jup = 3.375 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.635730175889976E-15 -4.122314189053076E-15 2.156930756886727E-12 9.013417801661534E-15 5.209321915933419E-13 -1.031685826866159E-14
q -4.122314189053076E-15 1.043764383653489E-14 -5.53404501411391E-12 -2.453258181308697E-14 -1.334487172249494E-12 2.667659465160131E-14
tp 2.156930756886727E-12 -5.53404501411391E-12 4.875732759940005E-9 2.877232909304757E-11 1.199869248135827E-9 -2.38223050305214E-11
node 9.013417801661534E-15 -2.453258181308697E-14 2.877232909304757E-11 4.233408272806559E-10 -4.023851039189796E-10 -7.752411674167011E-11
peri 5.209321915933419E-13 -1.334487172249494E-12 1.199869248135827E-9 -4.023851039189796E-10 6.985411350442193E-10 6.914968607658735E-11
i -1.031685826866159E-14 2.667659465160131E-14 -2.38223050305214E-11 -7.752411674167011E-11 6.914968607658735E-11 2.672706173307312E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.00   n/a MPCxxxxx  

20448 (1999 JM96)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JM96 = 1996 XH24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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