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JPL Small-Body Database Browser
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31346 (1998 PB1)
Classification: Amor [NEO]          SPK-ID: 2031346
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4299053101843066 6.9487e-08  
a 2.029683301162358 1.7077e-08 au
q 1.157111672000247 1.4703e-07 au
i 5.963152776785672 8.3687e-06 deg
node 299.7398235799914 5.7615e-05 deg
peri 350.4700316090349 6.1467e-05 deg
M 66.68540051649664 4.0241e-05 deg
tp 2458404.854840225028
(2018-Oct-13.35484023)
0.00011561 TDB
period 1056.187066036534
2.89
1.333e-05
3.65e-08
d
yr
n .3408487109683535 4.3017e-09 deg/d
Q 2.902254930324468 2.4419e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      7247 days (19.84 yr)  
   first obs. used      1998-07-14  
   last obs. used      2018-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60453  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-18 06:24:33  

Additional Information
 Earth MOID = .141243 au 
 Jupiter MOID = 2.30817 au 
 T_jup = 3.685 
[ 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 17.1   n/a MPO435980  
SMASSII spectral type spec_B Sq:   n/a Binzel et al. (2004) Icarus 170, 259-294 SMASSIR data only, classification consistent with specified type, but uncertain

31346 (1998 PB1)          Discovered 1998-Aug-15 by LINEAR at Socorro
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

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