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213322 (2001 SN121)
Classification: Main-belt Asteroid          SPK-ID: 2213322
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1438200067727541 5.6335e-08  
a 2.732011192107279 1.2747e-08 au
q 2.33909332395517 1.5481e-07 au
i 4.014760327716608 3.8588e-06 deg
node 284.42058096 7.2981e-05 deg
peri 42.5512040224729 7.4544e-05 deg
M 160.7460162673493 1.4425e-05 deg
tp 2458660.021867911682
(2019-Jun-25.52186791)
6.6067e-05 TDB
period 1649.385370215537
4.52
1.1544e-05
3.161e-08
d
yr
n .218263121827591 1.5276e-09 deg/d
Q 3.124929060259388 1.4581e-08 au
  Orbit Determination Parameters
   # obs. used (total)      753  
   data-arc span      7120 days (19.49 yr)  
   first obs. used      2001-07-22  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51862  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 03:30:03  

Additional Information
 Earth MOID = 1.32854 au 
 Jupiter MOID = 2.19898 au 
 T_jup = 3.335 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457494.5 (2016-Apr-16.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1459764035598222 5.6311e-08  
q 2.331206548308975 1.5499e-07 au
tp 2457011.395579655601
(2014-Dec-19.89557966)
6.629e-05 TDB
node 284.57563999123 7.3101e-05 deg
peri 42.3007773345182 7.4606e-05 deg
i 4.012590599868812 3.858e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      753  
   data-arc span      7120 days (19.49 yr)  
   first obs. used      2001-07-22  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51862  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 03:30:03  

Additional Information
 Jupiter MOID = 2.19898 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.17089268475878E-15 -8.706327941066966E-15 7.919350580887958E-13 3.59946711141856E-14 -1.563104289756654E-14 -4.257778740786118E-15
q -8.706327941066966E-15 2.40225865068242E-14 -2.319112176226954E-12 -9.83774348828071E-14 1.649655545151699E-14 1.208460750304958E-14
tp 7.919350580887958E-13 -2.319112176226954E-12 4.394300356578196E-9 8.253347911847194E-12 9.974813889188099E-10 -3.011466001117447E-12
node 3.59946711141856E-14 -9.83774348828071E-14 8.253347911847194E-12 5.343780597701614E-9 -5.330198996209996E-9 2.872999903699419E-11
peri -1.563104289756654E-14 1.649655545151699E-14 9.974813889188099E-10 -5.330198996209996E-9 5.566100724836414E-9 -2.916949243018282E-11
i -4.257778740786118E-15 1.208460750304958E-14 -3.011466001117447E-12 2.872999903699419E-11 -2.916949243018282E-11 1.488410607653972E-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 15.41   n/a MPCxxxxx  

213322 (2001 SN121)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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