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181730 (1995 SN49)
Classification: Main-belt Asteroid          SPK-ID: 2181730
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1113029346685338 1.2774e-07  
a 3.030237594898711 3.8993e-08 au
q 2.692963257843565 4.0683e-07 au
i .944045273976803 1.1697e-05 deg
node 210.4549756093348 0.0005099 deg
peri 151.2979084112484 0.00051175 deg
M 273.2502149466815 4.5241e-05 deg
tp 2459664.779337960388
(2022-Mar-26.27933796)
0.00024685 TDB
period 1926.697127410877
5.28
3.7189e-05
1.018e-07
d
yr
n .1868482569877359 3.6065e-09 deg/d
Q 3.367511931953857 4.3333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      117  
   data-arc span      9016 days (24.68 yr)  
   first obs. used      1995-09-18  
   last obs. used      2020-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55307  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:47  

Additional Information
 Earth MOID = 1.68849 au 
 Jupiter MOID = 2.08483 au 
 T_jup = 3.234 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456567.5 (2013-Oct-02.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108321988019213 1.2822e-07  
q 2.693771693079216 4.0828e-07 au
tp 2455818.774069111104
(2011-Sep-14.27406911)
0.00021727 TDB
node 210.4943265574498 0.00050988 deg
peri 152.4410740734651 0.00051173 deg
i .9439359536441178 1.1699e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      117  
   data-arc span      9016 days (24.68 yr)  
   first obs. used      1995-09-18  
   last obs. used      2020-05-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55307  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:47  

Additional Information
 Jupiter MOID = 2.08483 au 
 T_jup = 3.234 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.643939430003404E-14 -5.221171586370405E-14 3.081493018370192E-12 -1.169158193602435E-13 9.556989932872503E-13 -4.967767865289956E-15
q -5.221171586370405E-14 1.666926841697523E-13 -7.424628812858146E-12 3.637974346806247E-13 -2.513809354973626E-12 1.655431852271597E-14
tp 3.081493018370192E-12 -7.424628812858146E-12 4.720608755026117E-8 -2.629399548789547E-11 9.465786109018113E-9 1.380745580267149E-12
node -1.169158193602435E-13 3.637974346806247E-13 -2.629399548789547E-11 2.599804213120077E-7 -2.599526122638383E-7 -6.030864944109685E-10
peri 9.556989932872503E-13 -2.513809354973626E-12 9.465786109018113E-9 -2.599526122638383E-7 2.61865469635434E-7 6.033374153793215E-10
i -4.967767865289956E-15 1.655431852271597E-14 1.380745580267149E-12 -6.030864944109685E-10 6.033374153793215E-10 1.368626652309375E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9   n/a MPO433185  

181730 (1995 SN49)          Discovered 1995-Sep-22 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1995 SN49 = 2006 TC26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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