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118297 (1998 SY129)
Classification: Main-belt Asteroid          SPK-ID: 2118297
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .1403522820641128 4.6382e-08  
a 2.294947201882737 7.6932e-09 au
q 1.972846124881845 1.0593e-07 au
i 7.804963074802112 5.7203e-06 deg
node 20.3396003449646 2.9076e-05 deg
peri 343.7073613526669 3.4415e-05 deg
M 92.84277501453525 1.7854e-05 deg
tp 2458673.006196875655
(2019-Jul-08.50619688)
6.2604e-05 TDB
period 1269.864769835954
3.48
6.3853e-06
1.748e-08
d
yr
n .2834947535764033 1.4255e-09 deg/d
Q 2.617048278883629 8.7729e-09 au
  Orbit Determination Parameters
   # obs. used (total)      672  
   data-arc span      10338 days (28.30 yr)  
   first obs. used      1991-10-05  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5557  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:56:37  

Additional Information
 Earth MOID = .972558 au 
 Jupiter MOID = 2.84077 au 
 T_jup = 3.570 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457184.5 (2015-Jun-11.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412971025939981 4.6486e-08  
q 1.970363515718569 1.0626e-07 au
tp 2457402.065274560981
(2016-Jan-14.56527456)
6.0783e-05 TDB
node 20.3724735709797 2.9042e-05 deg
peri 343.3789645240961 3.4294e-05 deg
i 7.811358589281785 5.7224e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      672  
   data-arc span      10338 days (28.30 yr)  
   first obs. used      1991-10-05  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5557  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:56:37  

Additional Information
 Jupiter MOID = 2.84077 au 
 T_jup = 3.570 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.160943448891872E-15 -4.92999567655582E-15 1.151281075588952E-12 7.846226727858437E-15 2.936235841220066E-13 -1.152276442334028E-16
q -4.92999567655582E-15 1.129041019948657E-14 -2.593329639445517E-12 -1.733883343163016E-14 -6.629830926551752E-13 5.958257238382251E-16
tp 1.151281075588952E-12 -2.593329639445517E-12 3.694620720452149E-9 1.443576675043073E-11 1.116309603706932E-9 2.288060461367708E-12
node 7.846226727858437E-15 -1.733883343163016E-14 1.443576675043073E-11 8.434217432153748E-10 -8.306208934612535E-10 4.372857703955856E-11
peri 2.936235841220066E-13 -6.629830926551752E-13 1.116309603706932E-9 -8.306208934612535E-10 1.176089194970041E-9 -4.2663317807153E-11
i -1.152276442334028E-16 5.958257238382251E-16 2.288060461367708E-12 4.372857703955856E-11 -4.2663317807153E-11 3.274605825376634E-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 16.1   n/a MPO449690  

118297 (1998 SY129)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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