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5618 Saitama (1990 EA)
Classification: Main-belt Asteroid          SPK-ID: 2005618
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1238102195681577 2.9224e-08  
a 2.245470883193385 6.2043e-09 au
q 1.967458640111307 6.5138e-08 au
i 7.069843542672493 3.3379e-06 deg
node 142.1237847854944 2.6444e-05 deg
peri 342.7420741345285 2.9815e-05 deg
M 26.70427395396361 1.4486e-05 deg
tp 2458909.332962442664
(2020-Feb-29.83296244)
4.9345e-05 TDB
period 1229.021750496597
3.36
5.0937e-06
1.395e-08
d
yr
n .2929158901008374 1.214e-09 deg/d
Q 2.523483126275463 6.9724e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1906  
   data-arc span      23931 days (65.52 yr)  
   first obs. used      1954-07-29  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50106  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:42:24  

Additional Information
 Earth MOID = .983813 au 
 Jupiter MOID = 2.52428 au 
 T_jup = 3.611 
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Orbital Elements at Epoch 2456595.5 (2013-Oct-30.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1234470885287064 2.9254e-08  
q 1.968030796060744 6.5183e-08 au
tp 2456451.185700769136
(2013-Jun-07.68570077)
4.761e-05 TDB
node 142.1700962933023 2.6439e-05 deg
peri 342.7333093895566 2.9825e-05 deg
i 7.070379410546551 3.3385e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1906  
   data-arc span      23931 days (65.52 yr)  
   first obs. used      1954-07-29  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50106  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:42:24  

Additional Information
 Jupiter MOID = 2.52428 au 
 T_jup = 3.611 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.558094616329579E-16 -1.900388207345049E-15 1.807846408504341E-13 1.339912228098533E-15 3.855449506620084E-14 -4.16119450752106E-16
q -1.900388207345049E-15 4.248806218180721E-15 -3.846996316679273E-13 -2.72723447525789E-15 -7.991403614879529E-14 9.509298136492286E-16
tp 1.807846408504341E-13 -3.846996316679273E-13 2.266744152049612E-9 1.705282342249912E-12 6.662566981512833E-10 -1.688712577501954E-12
node 1.339912228098533E-15 -2.72723447525789E-15 1.705282342249912E-12 6.990187311846157E-10 -6.928356834972212E-10 6.953891316747851E-12
peri 3.855449506620084E-14 -7.991403614879529E-14 6.662566981512833E-10 -6.928356834972212E-10 8.895553466950447E-10 -7.405153960110197E-12
i -4.16119450752106E-16 9.509298136492286E-16 -1.688712577501954E-12 6.953891316747851E-12 -7.405153960110197E-12 1.11454015777322E-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 14.3   n/a MPO452246  
diameter diameter 3.740 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.289   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5618 Saitama           Discovered 1990 Mar. 4 by A. Sugie at Dynic Astronomical Observatory.
Named for the Japanese prefecture.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19960828/MPCPages.arcLast Updated: 2003-09-26

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Alternate Designations
 1990 EA = 1975 XK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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