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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457088.5 (2015-Mar-07.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1220864528773071 3.6539e-08  
q 2.61599234784842 1.0891e-07 au
tp 2456570.250346281809
(2013-Oct-04.75034628)
0.00010347 TDB
node 154.6500119636581 2.0275e-05 deg
peri 280.9620224772575 2.9124e-05 deg
i 11.81089213623514 4.92e-06 deg
  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
 Jupiter MOID = 1.96235 au 
 T_jup = 3.217 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.335085771249941E-15 -3.950017521293431E-15 -2.989329851599993E-13 -6.93409594756501E-15 -7.164409406537844E-14 -3.665397781996068E-15
q -3.950017521293431E-15 1.18619249334371E-14 8.580819190316944E-13 2.09884214287963E-14 2.16023780695616E-13 1.132691447977293E-14
tp -2.989329851599993E-13 8.580819190316944E-13 1.070542002375331E-8 -3.971277539656214E-12 2.180886642786684E-9 -4.242156751254764E-12
node -6.93409594756501E-15 2.09884214287963E-14 -3.971277539656214E-12 4.110829767824964E-10 -4.025470847194791E-10 1.219576817567655E-11
peri -7.164409406537844E-14 2.16023780695616E-13 2.180886642786684E-9 -4.025470847194791E-10 8.481877190724603E-10 -1.271364118262068E-11
i -3.665397781996068E-15 1.132691447977293E-14 -4.242156751254764E-12 1.219576817567655E-11 -1.271364118262068E-11 2.420610450382742E-11

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

[ show close-approach data ]
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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