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8671 (1991 PW)
Classification: Main-belt Asteroid          SPK-ID: 2008671
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2152888963020066 5.7864e-08  
a 2.447833598909328 1.5468e-08 AU
q 1.92084220506917 1.4496e-07 AU
i 3.462874148414907 7.2826e-06 deg
node 268.4609237533362 0.00010002 deg
peri 53.50457580155393 0.00010145 deg
M 30.80113036601162 1.5609e-05 deg
tp 2456880.816186584677
(2014-Aug-11.31618658)
6.0559e-05 JED
period 1398.850377162164
3.83
1.3259e-05
3.63e-08
d
yr
n .2573541858925105 2.4394e-09 deg/d
Q 2.974824992749487 1.8798e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      757  
   data-arc span      13808 days (37.80 yr)  
   first obs. used      1976-10-24  
   last obs. used      2014-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58104  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:53:54  

Additional Information
 Earth MOID = .911455 AU 
 T_jup = 3.463 
[ 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 14.5 mag n/a PDS3 (MPC 31680)  

8671 (1991 PW)          Discovered 1991-Aug-05 by Holt, H. E. at Palomar (675)
Reference: 19980511/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 PW = 1976 UE19 = 1996 XC27 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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