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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2152888918096184 5.8038e-08  
a 2.447833601467775 1.5687e-08 AU
q 1.920842218073431 1.4554e-07 AU
i 3.462873834859294 7.3647e-06 deg
node 268.4609261029642 0.0001004 deg
peri 53.50457523394387 0.00010183 deg
M 30.80112715295915 1.5945e-05 deg
tp 2456880.816198881982
(2014-Aug-11.31619888)
6.183e-05 JED
period 1398.850379355257
3.83
1.3446e-05
3.681e-08
d
yr
n .2573541854890352 2.4738e-09 deg/d
Q 2.974824984862119 1.9064e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      13787 days (37.75 yr)  
   first obs. used      1976-10-24  
   last obs. used      2014-07-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57911  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:13:04  

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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