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308461 (2005 SZ284)
Classification: Main-belt Asteroid          SPK-ID: 2308461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05121229932275509 4.8936e-08  
a 3.117485251142504 6.0104e-08 au
q 2.957831663326719 1.6722e-07 au
i 11.41663966535329 5.6572e-06 deg
node 98.9639410311177 3.427e-05 deg
peri 182.0757475147893 7.8207e-05 deg
M 342.6660248138168 7.1477e-05 deg
tp 2459097.305650561535
(2020-Sep-04.80565056)
0.00039997 TDB
period 2010.504447354434
5.50
5.8142e-05
1.592e-07
d
yr
n .1790595392483283 5.1783e-09 deg/d
Q 3.277138838958288 6.3182e-08 au
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      4995 days (13.68 yr)  
   first obs. used      2005-09-22  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58352  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:57:46  

Additional Information
 Earth MOID = 1.94139 au 
 Jupiter MOID = 1.84191 au 
 T_jup = 3.185 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457182.5 (2015-Jun-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04935800089454718 4.8873e-08  
q 2.962732237059591 1.666e-07 au
tp 2457092.918262377990
(2015-Mar-11.41826238)
0.00040213 TDB
node 98.9825441395036 3.4285e-05 deg
peri 182.8825028043861 8.0662e-05 deg
i 11.41443127471171 5.6566e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      4995 days (13.68 yr)  
   first obs. used      2005-09-22  
   last obs. used      2019-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58352  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:57:46  

Additional Information
 Jupiter MOID = 1.84191 au 
 T_jup = 3.185 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.388552525091321E-15 -7.627116614434315E-15 -3.285978602949239E-12 6.069285200377186E-15 -5.988421109775432E-13 -1.466789625305299E-15
q -7.627116614434315E-15 2.775514853966061E-14 1.353755763146112E-11 -1.095799376359372E-14 2.482529196621247E-12 1.101243530942293E-14
tp -3.285978602949239E-12 1.353755763146112E-11 1.617070829741978E-7 1.088149068580394E-10 2.943788998757185E-8 2.144353367777101E-11
node 6.069285200377186E-15 -1.095799376359372E-14 1.088149068580394E-10 1.175488700035713E-9 -1.132001849271031E-9 -3.644472948776751E-11
peri -5.988421109775432E-13 2.482529196621247E-12 2.943788998757185E-8 -1.132001849271031E-9 6.506388375426942E-9 3.973912812946207E-11
i -1.466789625305299E-15 1.101243530942293E-14 2.144353367777101E-11 -3.644472948776751E-11 3.973912812946207E-11 3.199656420170761E-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 15.9   n/a MPO433984  
diameter diameter 4.197 km 0.715 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.044   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

308461 (2005 SZ284)          Discovered 2005-Sep-25 by Becker, A. C. at Apache Point
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

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