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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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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216278522238965 3.649e-08  
a 2.978943536476411 1.4702e-08 au
q 2.616621032238526 1.0872e-07 au
i 11.81176468603354 4.4781e-06 deg
node 154.6379395991396 2.0102e-05 deg
peri 280.1321229998551 2.7507e-05 deg
M 182.4141669585308 1.8601e-05 deg
tp 2460322.898088641910
(2024-Jan-13.39808864)
9.9112e-05 TDB
period 1877.98376818273
5.14
1.3903e-05
3.806e-08
d
yr
n .1916949475811293 1.4191e-09 deg/d
Q 3.341266040714295 1.649e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1635  
   data-arc span      10918 days (29.89 yr)  
   first obs. used      1991-08-05  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51203  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:48:17  

Additional Information
 Earth MOID = 1.66369 au 
 Jupiter MOID = 1.96347 au 
 T_jup = 3.217 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457240.5 (2015-Aug-06.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1220978743027996 3.6449e-08  
q 2.615445945337463 1.0865e-07 au
tp 2456569.825012022615
(2013-Oct-04.32501202)
9.3509e-05 TDB
node 154.6512974342754 2.0104e-05 deg
peri 280.8583671989505 2.7455e-05 deg
i 11.81115132445171 4.478e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1635  
   data-arc span      10918 days (29.89 yr)  
   first obs. used      1991-08-05  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51203  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 15:48:17  

Additional Information
 Jupiter MOID = 1.96347 au 
 T_jup = 3.217 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.328508724411565E-15 -3.93193739549479E-15 -2.116502868146012E-13 -6.028712721529109E-15 -5.327277448935597E-14 -2.602506287949318E-15
q -3.93193739549479E-15 1.180403449485146E-14 6.651601419730918E-13 1.860776150909309E-14 1.771119312559503E-13 8.108935002369149E-15
tp -2.116502868146012E-13 6.651601419730918E-13 8.743967985999895E-9 -3.33173212696345E-12 1.766497938331086E-9 -2.958422849590089E-12
node -6.028712721529109E-15 1.860776150909309E-14 -3.33173212696345E-12 4.041814299574653E-10 -3.957121073373431E-10 7.161897688094309E-12
peri -5.327277448935597E-14 1.771119312559503E-13 1.766497938331086E-9 -3.957121073373431E-10 7.537507380191727E-10 -7.549483590726901E-12
i -2.602506287949318E-15 8.108935002369149E-15 -2.958422849590089E-12 7.161897688094309E-12 -7.549483590726901E-12 2.005229699846626E-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 13.64   n/a E2021B10  
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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