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JPL Small-Body Database Browser
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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 
[ show covariance matrix ]

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2169-Nov-25 08:34 < 00:01 Eunom 0.0286043293332897 0.0285999395701956 0.0286087249904818 6.94643211332663 6.94643204267856 2513599.856696557 0.257098797852027 687.885643896026 26.6140608058423 71.5658055686856 152490.816246253 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 17:42:36 2020-Feb-22 17:42

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