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 ]  
12271 (1990 RC2)
Classification: Main-belt Asteroid          SPK-ID: 2012271
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05066250131657282 6.1729e-08  
a 2.730194799143036 2.1069e-08 AU
q 2.591876301536952 1.6331e-07 AU
i 4.305138575443637 6.0227e-06 deg
node 198.8655593512694 6.6686e-05 deg
peri 166.6128868461662 8.3084e-05 deg
M 126.0512838313602 5.1898e-05 deg
tp 2456423.556012306388
(2013-May-11.05601231)
0.00023698 JED
period 1647.740738980295
4.51
1.9073e-05
5.222e-08
d
yr
n .2184809730581682 2.529e-09 deg/d
Q 2.868513296749121 2.2136e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1147  
   data-arc span      9038 days (24.74 yr)  
   first obs. used      1990-09-14  
   last obs. used      2015-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .519  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:09:08  

Additional Information
 Earth MOID = 1.59013 AU 
 T_jup = 3.349 
[ 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 13.8 mag n/a MPO337362  
rotation period rot_per 2.54 h n/a LCDB (Rev. 2015-July); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Higgins, D.; Pravec, P.; Kusnirak, P.; Galad, A.; et al. (2006) Minor Planet Bul. 33, 89-91.]

12271 (1990 RC2)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar
Reference: 19991123/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 RC2 = 1997 EN41 = 1998 KP64 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Aug-31 19:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin