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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1523026224022301 1.0302e-07  
a 3.152125545057817 3.2727e-08 au
q 2.672048558404453 3.3304e-07 au
i 27.36243662114773 1.0417e-05 deg
node 198.040558137288 1.071e-05 deg
peri 159.2854715505314 2.6885e-05 deg
M 276.7688080380089 2.4471e-05 deg
tp 2459673.093016926434
(2022-Apr-03.59301693)
0.00014294 TDB
period 2044.107288181222
5.60
3.1834e-05
8.716e-08
d
yr
n .1761160004083328 2.7428e-09 deg/d
Q 3.632202531711182 3.7711e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5727  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:06:59  

Additional Information
 Earth MOID = 1.68116 au 
 Jupiter MOID = 1.87349 au 
 T_jup = 3.017 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457481.5 (2016-Apr-03.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1517384006178377 1.0341e-07  
q 2.675253299270292 3.3434e-07 au
tp 2457631.721744663099
(2016-Aug-31.22174466)
0.00012764 TDB
node 198.0564299930843 1.0709e-05 deg
peri 159.7627932234503 2.6776e-05 deg
i 27.35971817798605 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5727  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:06:59  

Additional Information
 Jupiter MOID = 1.87349 au 
 T_jup = 3.017 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.069419172712147E-14 -3.446179894385121E-14 5.890529957156581E-12 -2.014596307675552E-14 1.518836088835882E-12 -2.454935792344074E-15
q -3.446179894385121E-14 1.117837972176609E-13 -1.72342822661275E-11 6.199175221685087E-14 -4.614477894078733E-12 1.552333631754155E-14
tp 5.890529957156581E-12 -1.72342822661275E-11 1.629180075600952E-8 -1.689979489746759E-11 3.097592142844306E-9 4.12149221852698E-11
node -2.014596307675552E-14 6.199175221685087E-14 -1.689979489746759E-11 1.146780857649957E-10 -1.051054665475815E-10 2.962044620757636E-11
peri 1.518836088835882E-12 -4.614477894078733E-12 3.097592142844306E-9 -1.051054665475815E-10 7.169505269836148E-10 -1.929753460485167E-11
i -2.454935792344074E-15 1.552333631754155E-14 4.12149221852698E-11 2.962044620757636E-11 -1.929753460485167E-11 1.084874078624732E-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 15.31   n/a E2021B25  
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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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