Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
85187 (1991 PC12)
Classification: Main-belt Asteroid          SPK-ID: 2085187
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3647236769634334 6.0424e-08  
a 2.684494518773478 1.9667e-08 au
q 1.705395807098232 1.57e-07 au
i 11.81736822328705 8.8343e-06 deg
node 186.5114362977213 2.9394e-05 deg
peri 101.342483042302 3.2108e-05 deg
M 222.4160272381448 1.434e-05 deg
tp 2458014.484707136952
(2017-Sep-17.98470714)
6.9182e-05 JED
period 1606.542463720628
4.40
1.7655e-05
4.834e-08
d
yr
n .2240837127742444 2.4625e-09 deg/d
Q 3.663593230448724 2.684e-08 au
  Orbit Determination Parameters
   # obs. used (total)      451  
   data-arc span      8865 days (24.27 yr)  
   first obs. used      1991-08-07  
   last obs. used      2015-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5401  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 18:40:45  

Additional Information
 Earth MOID = .736497 au 
 Jupiter MOID = 1.76697 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 MPO351439  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-10 04:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin