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JPL Small-Body Database Browser
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39542 (1991 PO3)
Classification: Main-belt Asteroid          SPK-ID: 2039542
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1964054980893415 5.2011e-08  
a 2.458034288108388 1.0962e-08 au
q 1.97526283943178 1.3063e-07 au
i 2.561356492266289 5.4092e-06 deg
node 339.859443627969 9.2454e-05 deg
peri 349.8645005881448 9.2951e-05 deg
M 161.88077391818 9.7256e-06 deg
tp 2458367.544608963007
(2018-Sep-06.04460896)
3.7501e-05 TDB
period 1407.603480376783
3.85
9.4162e-06
2.578e-08
d
yr
n .2557538433363608 1.7109e-09 deg/d
Q 2.940805736784996 1.3115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      625  
   data-arc span      10411 days (28.50 yr)  
   first obs. used      1991-08-02  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5105  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:29:13  

Additional Information
 Earth MOID = .964346 au 
 Jupiter MOID = 2.41194 au 
 T_jup = 3.463 
[ 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 15.7   n/a MPO452717  

39542 (1991 PO3)          Discovered 1991-Aug-02 by Elst, E. W. at La Silla
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PO3 = 1999 TQ31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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