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173809 (2001 SJ241)
Classification: Main-belt Asteroid          SPK-ID: 2173809
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09631047896527987 5.0221e-08  
a 2.751100445123628 2.3413e-08 au
q 2.486140643572177 1.3353e-07 au
i 9.738156799091243 7.6197e-06 deg
node 18.71376954463528 2.8268e-05 deg
peri 240.0422642505763 5.1955e-05 deg
M 141.2809220422521 4.6747e-05 deg
tp 2458346.407578324943
(2018-Aug-15.90757832)
0.00021414 TDB
period 1666.702541285786
4.56
2.1277e-05
5.825e-08
d
yr
n .2159953507494362 2.7574e-09 deg/d
Q 3.016060246675079 2.5668e-08 au
  Orbit Determination Parameters
   # obs. used (total)      279  
   data-arc span      6641 days (18.18 yr)  
   first obs. used      2001-09-19  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55056  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:03:10  

Additional Information
 Earth MOID = 1.48894 au 
 Jupiter MOID = 2.05595 au 
 T_jup = 3.318 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457326.5 (2015-Oct-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09694251470898946 4.9989e-08  
q 2.48423917111378 1.3292e-07 au
tp 2456683.249544535702
(2014-Jan-25.74954454)
0.00020935 TDB
node 18.74100671965365 2.8235e-05 deg
peri 240.7627054146461 5.1832e-05 deg
i 9.745449681566601 7.625e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      279  
   data-arc span      6641 days (18.18 yr)  
   first obs. used      2001-09-19  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55056  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:03:10  

Additional Information
 Jupiter MOID = 2.05595 au 
 T_jup = 3.318 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.498935667076083E-15 -6.566855426798498E-15 1.425102495472245E-12 -4.066406100380129E-15 1.903651289436086E-13 2.078324025651235E-15
q -6.566855426798498E-15 1.76664523090809E-14 -3.303267151846399E-12 8.132682182372151E-15 -3.770399863504816E-13 -4.413009778615349E-15
tp 1.425102495472245E-12 -3.303267151846399E-12 4.382706084602653E-8 -4.633744486800681E-12 9.102237335492914E-9 -9.766872201193786E-12
node -4.066406100380129E-15 8.132682182372151E-15 -4.633744486800681E-12 7.972139655058858E-10 -7.863150166062377E-10 -5.998156317103692E-11
peri 1.903651289436086E-13 -3.770399863504816E-13 9.102237335492914E-9 -7.863150166062377E-10 2.686571454653296E-9 5.706744429085368E-11
i 2.078324025651235E-15 -4.413009778615349E-15 -9.766872201193786E-12 -5.998156317103692E-11 5.706744429085368E-11 5.814036555255515E-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 16.0   n/a MPO412972  

173809 (2001 SJ241)          Discovered 2001-Sep-19 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 2001 SJ241 = 2004 GR23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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