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85187 (1991 PC12)
Classification: Main-belt Asteroid          SPK-ID: 2085187
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3656818369724239 6.0526e-08  
a 2.682571698935365 1.9606e-08 AU
q 1.701603952258445 1.572e-07 AU
i 11.81556156841533 8.8716e-06 deg
node 186.5542033719256 2.9429e-05 deg
peri 101.3354266796654 3.2129e-05 deg
M 132.6631428939324 1.3602e-05 deg
tp 2456409.111036199154
(2013-Apr-26.61103620)
5.6352e-05 JED
period 1604.816698323842
4.39
1.7593e-05
4.817e-08
d
yr
n .2243246847917295 2.4592e-09 deg/d
Q 3.663539445612286 2.6775e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      447  
   data-arc span      8562 days (23.44 yr)  
   first obs. used      1991-08-07  
   last obs. used      2015-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54107  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 16:21:24  

Additional Information
 Earth MOID = .735512 AU 
 T_jup = 3.248 
[ 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 15.2 mag n/a MPO325050  

85187 (1991 PC12)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1991 PC12 = 2000 RR5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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