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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3659122987827383 6.5213e-08  
a 2.682232818774033 1.9822e-08 AU
q 1.700770842185923 1.6944e-07 AU
i 11.81647603499341 1.1627e-05 deg
node 186.5638929792105 3.0609e-05 deg
peri 101.3149475270509 3.5158e-05 deg
M 87.78611471938609 1.5699e-05 deg
tp 2456409.239088414790
(2013-Apr-26.73908841)
6.7283e-05 JED
period 1604.512611372816
4.39
1.7786e-05
4.87e-08
d
yr
n .2243671987669734 2.4871e-09 deg/d
Q 3.663694795362144 2.7075e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      430  
   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      .547  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 16:30:17  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Jul-26 03:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin