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4596 (1981 QB)
Classification: Amor [NEO]          SPK-ID: 2004596
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 59 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5191531939172217 8.2337e-08  
a 2.240270435213126 1.1303e-08 au
q 1.077226883533907 1.8199e-07 au
i 37.08174524700446 1.5443e-05 deg
node 154.2786285030395 1.4153e-05 deg
peri 248.4004920075039 2.4308e-05 deg
M 127.7584464766659 2.8371e-05 deg
tp 2457165.853467156175
(2015-May-23.35346716)
9.3776e-05 JED
period 1224.754653324277
3.35
9.2694e-06
2.538e-08
d
yr
n .2939364214888868 2.2246e-09 deg/d
Q 3.403313986892344 1.7172e-08 au
  Orbit Determination Parameters
   # obs. used (total)      223  
   data-arc span      12661 days (34.66 yr)  
   first obs. used      1981-08-28  
   last obs. used      2016-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64648  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-28 05:48:54  

Additional Information
 Earth MOID = .298291 au 
 Jupiter MOID = 2.87164 au 
 T_jup = 3.217 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1 mag n/a MPO365302  

4596 (1981 QB)          Discovered 1981-Aug-28 by Kowal, C. T. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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