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31111 (1997 PN5)
Classification: Main-belt Asteroid          SPK-ID: 2031111
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .193626634883508 9.6044e-08  
a 2.621626303801209 2.8276e-08 AU
q 2.114009624674091 2.5151e-07 AU
i 12.13246604812403 9.6453e-06 deg
node 293.2401554368657 3.5335e-05 deg
peri 93.37733566864173 4.437e-05 deg
M 291.0895436601384 2.8351e-05 deg
tp 2457097.281776941137
(2015-Mar-15.78177694)
0.0001245 JED
period 1550.438719660696
4.24
2.5084e-05
6.868e-08
d
yr
n .2321923436475992 3.7565e-09 deg/d
Q 3.129242982928326 3.3751e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      5847 days (16.01 yr)  
   first obs. used      1997-06-29  
   last obs. used      2013-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51427  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 22:51:06  

Additional Information
 Earth MOID = 1.15843 AU 
 T_jup = 3.346 
[ 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 13.5 mag n/a MPO266109  

31111 (1997 PN5)          Discovered 1997-Aug-11 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905)
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

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