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6615 Plutarchos (9512 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2006615
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .1262486036443036 3.1632e-08  
a 2.169748108331442 5.0168e-09 au
q 1.895820439394728 6.7935e-08 au
i 1.797137819154471 2.8532e-06 deg
node 129.3578918868905 0.00010425 deg
peri 81.27766921878077 0.00010505 deg
M 21.62563223444846 1.1683e-05 deg
tp 2458930.374056604108
(2020-Mar-21.87405660)
3.7943e-05 TDB
period 1167.380419163264
3.20
4.0488e-06
1.109e-08
d
yr
n .3083827637421183 1.0696e-09 deg/d
Q 2.443675777268155 5.6502e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2081  
   data-arc span      21879 days (59.90 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48375  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:34:25  

Additional Information
 Earth MOID = .891203 au 
 Jupiter MOID = 2.51774 au 
 T_jup = 3.679 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456877.5 (2014-Aug-08.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1263415901267588 3.1603e-08  
q 1.895812754077755 6.7882e-08 au
tp 2456595.501292972404
(2013-Oct-30.00129297)
4.0623e-05 TDB
node 129.3661914523159 0.00010424 deg
peri 81.27216673088108 0.00010504 deg
i 1.796971017814502 2.8538e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2081  
   data-arc span      21879 days (59.90 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48375  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:34:25  

Additional Information
 Jupiter MOID = 2.51774 au 
 T_jup = 3.679 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.987429725851772E-16 -2.14090832602792E-15 6.496491928584841E-15 -1.890326785492832E-15 -2.147466188694736E-14 -8.17761335491445E-16
q -2.14090832602792E-15 4.607921115808544E-15 -8.933356453294496E-14 4.868601144456335E-15 2.317726692334984E-14 1.768530900359873E-15
tp 6.496491928584841E-15 -8.933356453294496E-14 1.650216772542069E-9 -3.451952594896763E-12 5.348318771994387E-10 -2.821570402387235E-13
node -1.890326785492832E-15 4.868601144456335E-15 -3.451952594896763E-12 1.086528428745928E-8 -1.086065143953622E-8 -3.712279897858052E-11
peri -2.147466188694736E-14 2.317726692334984E-14 5.348318771994387E-10 -1.086065143953622E-8 1.103298257640694E-8 3.703345909629847E-11
i -8.17761335491445E-16 1.768530900359873E-15 -2.821570402387235E-13 -3.712279897858052E-11 3.703345909629847E-11 8.144157014646869E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO467717  
diameter diameter 3.139 km 0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.3247 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Oey, J.; Pray, D.P.; Pravec, P. (2007) Minor Planet Bull. 34, 101.]
geometric albedo albedo 0.412   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6615 Plutarchos (9512 P-L)          Discovered 1960-Oct-17 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 9512 P-L = 1991 EW 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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