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308399 (2005 SZ55)
Classification: Main-belt Asteroid          SPK-ID: 2308399
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1522003468987789 1.0305e-07  
a 3.151644737969669 3.2869e-08 au
q 2.671963315548974 3.3296e-07 au
i 27.36407120086634 1.0417e-05 deg
node 198.0447051193639 1.071e-05 deg
peri 159.3496905179587 2.6865e-05 deg
M 241.4545969637611 2.4175e-05 deg
tp 2459673.455781675562
(2022-Apr-03.95578168)
0.00014289 TDB
period 2043.639611475638
5.60
3.197e-05
8.753e-08
d
yr
n .1761563036743338 2.7558e-09 deg/d
Q 3.631326160390363 3.7872e-08 au
  Orbit Determination Parameters
   # obs. used (total)      268  
   data-arc span      5412 days (14.82 yr)  
   first obs. used      2005-08-30  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57271  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:01:25  

Additional Information
 Earth MOID = 1.6825 au 
 Jupiter MOID = 1.87297 au 
 T_jup = 3.017 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457481.5 (2016-Apr-03.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1517384005599266 1.0341e-07  
q 2.675253300079826 3.3434e-07 au
tp 2457631.721744010704
(2016-Aug-31.22174401)
0.00012764 TDB
node 198.0564300065757 1.0709e-05 deg
peri 159.7627930692078 2.6776e-05 deg
i 27.3597181772623 1.0416e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      268  
   data-arc span      5412 days (14.82 yr)  
   first obs. used      2005-08-30  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57271  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:01:25  

Additional Information
 Jupiter MOID = 1.87297 au 
 T_jup = 3.017 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.069419124969017E-14 -3.446179811233688E-14 5.890531439558934E-12 -2.014596889998441E-14 1.518836443342159E-12 -2.454933270331132E-15
q -3.446179811233688E-14 1.117837976515788E-13 -1.723428606274032E-11 6.199177367043439E-14 -4.614478848488084E-12 1.552333194216984E-14
tp 5.890531439558934E-12 -1.723428606274032E-11 1.629180098956105E-8 -1.689979917236426E-11 3.097592278978531E-9 4.121491469570818E-11
node -2.014596889998441E-14 6.199177367043439E-14 -1.689979917236426E-11 1.146780845158702E-10 -1.051054666191111E-10 2.962044734923486E-11
peri 1.518836443342159E-12 -4.614478848488084E-12 3.097592278978531E-9 -1.051054666191111E-10 7.169505862255822E-10 -1.929753657839164E-11
i -2.454933270331132E-15 1.552333194216984E-14 4.121491469570818E-11 2.962044734923486E-11 -1.929753657839164E-11 1.084874105330136E-10

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 15.2   n/a MPO455272  
diameter diameter 5.286 km 0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

308399 (2005 SZ55)          Discovered 2005-Sep-25 by Spacewatch at Kitt Peak
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

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