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243618 (1999 JU61)
Classification: Mars-crossing Asteroid          SPK-ID: 2243618
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3610536780896365 4.8069e-08  
a 2.435396364409853 8.0716e-09 au
q 1.556087549433547 1.2005e-07 au
i 7.778047832696339 6.4222e-06 deg
node 238.0838262507947 3.0235e-05 deg
peri 53.35138210106722 3.1779e-05 deg
M 63.51639074028277 8.0548e-06 deg
tp 2458355.573251042140
(2018-Aug-25.07325104)
3.0384e-05 TDB
period 1388.202770925224
3.80
6.9014e-06
1.89e-08
d
yr
n .2593281093655097 1.2892e-09 deg/d
Q 3.31470517938616 1.0986e-08 au
  Orbit Determination Parameters
   # obs. used (total)      631  
   data-arc span      7074 days (19.37 yr)  
   first obs. used      1999-04-30  
   last obs. used      2018-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49201  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:19:37  

Additional Information
 Earth MOID = .55533 au 
 Jupiter MOID = 1.93502 au 
 T_jup = 3.401 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456716.5 (2014-Feb-28.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3611974131358315 4.7874e-08  
q 1.555319766856482 1.1954e-07 au
tp 2456968.529188686698
(2014-Nov-07.02918869)
2.7344e-05 TDB
node 238.1046618913072 3.0255e-05 deg
peri 53.48214063277415 3.1806e-05 deg
i 7.775877117143801 6.4209e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      631  
   data-arc span      7074 days (19.37 yr)  
   first obs. used      1999-04-30  
   last obs. used      2018-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49201  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:19:37  

Additional Information
 Jupiter MOID = 1.93502 au 
 T_jup = 3.401 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.291938419561082E-15 -5.719299914023287E-15 -7.044504844556881E-13 6.815069234831471E-14 -2.435467726989532E-13 -1.179030270865301E-14
q -5.719299914023287E-15 1.429018104172062E-14 1.761547426398213E-12 -1.719748621269152E-13 6.102627105495763E-13 3.014310036746461E-14
tp -7.044504844556881E-13 1.761547426398213E-12 7.476833071527782E-10 -4.34804557813064E-11 2.809476470083342E-10 4.935996025335457E-12
node 6.815069234831471E-14 -1.719748621269152E-13 -4.34804557813064E-11 9.153496044304215E-10 -9.184273222059601E-10 1.891577871612647E-11
peri -2.435467726989532E-13 6.102627105495763E-13 2.809476470083342E-10 -9.184273222059601E-10 1.011605479137684E-9 -1.755218070283326E-11
i -1.179030270865301E-14 3.014310036746461E-14 4.935996025335457E-12 1.891577871612647E-11 -1.755218070283326E-11 4.122775420328391E-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 16.0   n/a MPO450092  

243618 (1999 JU61)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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