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8510 (1991 PT8)
Classification: Main-belt Asteroid          SPK-ID: 2008510
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216200297979161 3.657e-08  
a 2.979453937031471 1.5179e-08 au
q 2.617092660428185 1.0887e-07 au
i 11.8113631377505 4.9201e-06 deg
node 154.6356190099525 2.0274e-05 deg
peri 280.2922992681867 2.9194e-05 deg
M 106.3200918964918 2.021e-05 deg
tp 2458445.725765660578
(2018-Nov-23.22576566)
0.0001048 TDB
period 1878.466438466106
5.14
1.4355e-05
3.93e-08
d
yr
n .1916456917345642 1.4645e-09 deg/d
Q 3.341815213634758 1.7025e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1520  
   data-arc span      10571 days (28.94 yr)  
   first obs. used      1991-08-05  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52128  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:20:20  

Additional Information
 Earth MOID = 1.66426 au 
 Jupiter MOID = 1.96235 au 
 T_jup = 3.217 
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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 13.6   n/a MPO384832  
diameter diameter 7.647 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.132   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8510 (1991 PT8)          Discovered 1991-Aug-05 by Holt, H. E. at Palomar
Reference: 19980313/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 PT8 = 1992 WV8 = 1994 EA9 = 1995 OD10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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