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277256 (2005 SW2)
Classification: Main-belt Asteroid          SPK-ID: 2277256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1350255517422167 6.5432e-08  
a 2.296510459813043 9.4926e-09 au
q 1.986422867895015 1.4826e-07 au
i 6.827129733970057 8.0096e-06 deg
node 24.24876616175364 3.1757e-05 deg
peri 323.8158001674826 4.0631e-05 deg
M 150.2393857411364 2.3992e-05 deg
tp 2458670.003690333854
(2019-Jul-05.50369033)
8.3608e-05 TDB
period 1271.162488702332
3.48
7.8815e-06
2.158e-08
d
yr
n .2832053362174858 1.7559e-09 deg/d
Q 2.606598051731071 1.0774e-08 au
  Orbit Determination Parameters
   # obs. used (total)      323  
   data-arc span      8148 days (22.31 yr)  
   first obs. used      1998-09-25  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55158  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 20:11:06  

Additional Information
 Earth MOID = .983513 au 
 Jupiter MOID = 2.81197 au 
 T_jup = 3.573 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457372.5 (2015-Dec-16.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1359931002585877 6.5614e-08  
q 1.983855513540845 1.488e-07 au
tp 2457398.549558927185
(2016-Jan-11.04955893)
8.0588e-05 TDB
node 24.28137954404583 3.1724e-05 deg
peri 323.6602811247548 4.0478e-05 deg
i 6.832170966817843 8.0135e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      323  
   data-arc span      8148 days (22.31 yr)  
   first obs. used      1998-09-25  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55158  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 20:11:06  

Additional Information
 Jupiter MOID = 2.81197 au 
 T_jup = 3.573 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.305142086938269E-15 -9.749761782076155E-15 2.759137908286531E-12 -1.179094358696607E-14 7.213776160556448E-13 -5.179735544964317E-15
q -9.749761782076155E-15 2.214211993642337E-14 -6.184637397844824E-12 2.621971002842784E-14 -1.615608809024898E-12 1.206622904497051E-14
tp 2.759137908286531E-12 -6.184637397844824E-12 6.494385591481662E-9 -1.442476271562665E-11 2.021696587238545E-9 -5.255817106674656E-12
node -1.179094358696607E-14 2.621971002842784E-14 -1.442476271562665E-11 1.006417438445411E-9 -1.00267953375379E-9 1.398622346903809E-11
peri 7.213776160556448E-13 -1.615608809024898E-12 2.021696587238545E-9 -1.00267953375379E-9 1.638443434479558E-9 -1.524281164895379E-11
i -5.179735544964317E-15 1.206622904497051E-14 -5.255817106674656E-12 1.398622346903809E-11 -1.524281164895379E-11 6.421558454087758E-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 17.0   n/a MPO450166  

277256 (2005 SW2)          Discovered 2005-Sep-23 by CSS at Catalina
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Alternate Designations
 2005 SW2 = 2004 JN52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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