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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3659122648555999 6.5414e-08  
a 2.682232808501677 1.8426e-08 AU
q 1.700770926672832 1.7199e-07 AU
i 11.81646170001613 1.286e-05 deg
node 186.5638882588306 3.0612e-05 deg
peri 101.314967756489 3.5171e-05 deg
M 87.78610968079489 1.5938e-05 deg
tp 2456409.239113119351
(2013-Apr-26.73911312)
6.9129e-05 JED
period 1604.512602155424
4.39
1.6534e-05
4.527e-08
d
yr
n .2243672000558883 2.312e-09 deg/d
Q 3.663694690330522 2.5168e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      431  
   data-arc span      8192 days (22.43 yr)  
   first obs. used      1991-08-07  
   last obs. used      2014-01-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57652  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jan-22 13:03:41  

Additional Information
 Earth MOID = .733003 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 15.1 mag n/a MPO267962  

85187 (1991 PC12)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar (675)
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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